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• aligning extern constants (gcc)

  - by ~buratinas

  I want to make some static constants globally visible. I'm pretty familiar how to do that in C++. The problem is that these constants need to be aligned to some exotic boundary. Do I have to specify the alignment in extern declaration? I'm using GCC4.5 in *.cpp file static const constant_t constant __attribute__((aligned(64))) = {blah,blah,blah}; in *.h file //Which one is correct? extern const constant_t constant; extern const constant_t constant __attribute__((aligned(64)));

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• jQuery selector to target any CSS name (of multiple present) starting with a prefix?

  - by John K

  I'm considering one selection statement that would target one of many css class names in a single class attribute value based on a string prefix. For example, I want any detail- prefixed class names to get targeted from the following sample links. <a href="eg.html" class="detail-1 pinkify another"> <a href="eg.html" class="something detail-55 minded"> <a href="eg.html" class="swing narrow detail-Z"> <a href="eg.html" class="swing narrow detail-Z detail-88 detail-A"> It's reminiscent of how [class|="detail"] prefix selector works on a scalar attribute value, and also of .hasClass(className), but my question needs both concepts applied simultaneously. Note: The detail- prefix won't necessarily be the first class name of the bunch.

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• Localizing validation (error) messages in Grails

  - by John

  Hi, I try to localize error messages from the Domain classes. This is possible with the default error messages, e.g.: default.blank.message=Property [{0}] cannot be blank and localized attribute names, e.g.: customer.address.label=Customer address Where "Customer" is my domain class and address is its attribute. My problem is that I can't localize some attributes because I need specific error messages. E.g: has.to.be.a.number=Property [{0}] has to be a number contingent.size.label=Contingent size. But the message I get is "Property [size] has to be a number" instead of "Property [Contingent size] has to be a number". The messages I cant localize are following: - Property [{0}] has to be a number - Property [{0}] has to be a valid date // I can't use g:datePicker in this context

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• How to list all classes with a specific Atttribute within an assembly?

  - by markattwood

  Please help me on how to list all classes with a specific Attribute within an assembly in C#?

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• Printing contents of a dynamically created iframe from parent window

  - by certainlyakey

  I have a page with a list of links and a div which serves as a placeholder for the pages the links lead to. Everytime user clicks on a link an iframe is created in the div and its src attribute gets the value of the link href attribute - simple and clear, sort of external web pages gallery. What i do have a problem with is printing the contents of the iframe. To do this i use this code: function PrintIframe() { frames["name"].focus(); frames["name"].print(); } The issue seems to be that iframe is created dynamically by JQuery - when I insert an iframe right into the html code, the browser prints the external page all right. But with the same code injected by JavaScript nothing happens. I tried to use JQ 1.3 'live' event on "Print" link, no success. Is there a way to overcome this?

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• rails 3.1 partial_updates doesn't seem to work with password

  - by user1306769

  i have a user model with a password attribute, which gets saved as password_digest. What i want to do is have the edit user page and the edit password page separated, so that the admin doesn't need to input the password everytime he needs to change something else. For this i have made an extra action / view. My problem is that when i update the user info, i get password validation errors even though i have no password field in the form. Which leads me to the conclusion that partial_updates isn't working with the password attribute (as i have already tested in the console that it is enabled, and it is) Is this me doing something wrong, or should i approach this differently?

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• Handling orientation changes yourself

  - by synic

  From the documentation regarding the android:configChanges='orientation' attribute of the activity tag in the manifest: Note: Using this attribute should be avoided and used only as a last-resort. Please read Handling Runtime Changes for more information about how to properly handle a restart due to a configuration change. Why does it say this? In the case of threads and networking requests via a service API library, a request could be made with a reference to the original Activity, and then an orientation change could occur, leaving the thread pointing to the old Activity. While this can be fixed, it's tedious and ugly compared to just handling the configuration changes yourself. Why should it be avoided?

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• required element content

  - by Guarava Makanili

  I'm trying to create xsd for an element like this: <ElementType attr1="a" attr2 ="b">mandatory_string</ElementType> and I want to make the mandatory_string required. What should I add to this xsd: <xs:complexType name="ElementType"> <xs:simpleContent> <xs:extension base="xs:string"> <xs:attribute name="attr1" type="StringLength1to2" use="required"/> <xs:attribute name="attr2" type="StringLength1to2" use="required"/> </xs:extension> </xs:simpleContent> </xs:complexType> Currently is optional. What's missing?

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• how to use ip address in xsl

  - by user1597122

  I'm using xsl to generate html from xsl. I have to use ip address in name of the class in css like this: <td><div title="delete" > <xsl:attribute name="class"> delete_link_<xsl:value-of select="destinationIp"/> </xsl:attribute> <img class="row-remover" src="/media/img/remove.png"/> </div></td> and i have this jquery function: $('.delete_link_<xsl:value-of select="destinationIp"/>').click( function() { // do some thing here }); but because there are 'dots' in ip address, the above code doesn't work. when i remove dots of destinationIp tag in xml file, it works. so i think it has problem with 'dot'. any idea to make it work? really thanks :)

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• Insert multiple attributes into html tag using JavaScript and not between tags

  - by WilliamK

  From a previous quest we asked about inserting a new attribute into a html tag and the code below does the job nicely, but how should it be coded to add multiple attributes, for example changing.. <body bgcolor="#DDDDDD"> to... <body bgcolor="#DDDDDD" topmargin="0" leftmargin="0"> The code that works for a single attribute is... document.getElementsByTagName("body")[0].setAttribute("id", "something"); How to modify this for inserting multiple attributes?

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• JQuery input hidden bug

  - by Abude

  this is the code: Jsfiddle when you clear the url filed and leave it empty the input is hidden and disappear , need to return to the input tag wit h display if the value is empty by click or tab. i have a form with inputs the url input is edited by clicking on the link double click or click next to the link that means in the div area when it's done editing it converts the text to link the Problem: when you leave the input empty it make the attribute of the code and the input attribute hidden so no info is show neither can type an info. how can i make if that input with the id url0/url1 is empty to return to the input option to make it visible and can type?

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• What's the difference between find and findstr commands in Windows?

  - by Prashant Bhate

  In Windows, what are the differences between find and findstr commands? Both seems to search text in files: find c:\>find /? Searches for a text string in a file or files. FIND [/V] [/C] [/N] [/I] [/OFF[LINE]] "string" [[drive:][path]filename[ ...]] /V Displays all lines NOT containing the specified string. /C Displays only the count of lines containing the string. /N Displays line numbers with the displayed lines. /I Ignores the case of characters when searching for the string. /OFF[LINE] Do not skip files with offline attribute set. "string" Specifies the text string to find. [drive:][path]filename Specifies a file or files to search. If a path is not specified, FIND searches the text typed at the prompt or piped from another command. findstr c:\>findstr /? Searches for strings in files. FINDSTR [/B] [/E] [/L] [/R] [/S] [/I] [/X] [/V] [/N] [/M] [/O] [/P] [/F:file] [/C:string] [/G:file] [/D:dir list] [/A:color attributes] [/OFF[LINE]] strings [[drive:][path]filename[ ...]] /B Matches pattern if at the beginning of a line. /E Matches pattern if at the end of a line. /L Uses search strings literally. /R Uses search strings as regular expressions. /S Searches for matching files in the current directory and all subdirectories. /I Specifies that the search is not to be case-sensitive. /X Prints lines that match exactly. /V Prints only lines that do not contain a match. /N Prints the line number before each line that matches. /M Prints only the filename if a file contains a match. /O Prints character offset before each matching line. /P Skip files with non-printable characters. /OFF[LINE] Do not skip files with offline attribute set. /A:attr Specifies color attribute with two hex digits. See "color /?" /F:file Reads file list from the specified file(/ stands for console). /C:string Uses specified string as a literal search string. /G:file Gets search strings from the specified file(/ stands for console). /D:dir Search a semicolon delimited list of directories strings Text to be searched for. [drive:][path]filename Specifies a file or files to search. Use spaces to separate multiple search strings unless the argument is prefixed with /C. For example, 'FINDSTR "hello there" x.y' searches for "hello" or "there" in file x.y. 'FINDSTR /C:"hello there" x.y' searches for "hello there" in file x.y. Regular expression quick reference: . Wildcard: any character * Repeat: zero or more occurances of previous character or class ^ Line position: beginning of line $ Line position: end of line [class] Character class: any one character in set [^class] Inverse class: any one character not in set [x-y] Range: any characters within the specified range \x Escape: literal use of metacharacter x \<xyz Word position: beginning of word xyz\> Word position: end of word For full information on FINDSTR regular expressions refer to the online Command Reference.

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• Embeding OAF Region in Workflow Notification

  - by Manoj Madhusoodanan

  This blog describes the steps to embed custom OAF region in a workflow notification.1) Create a custom OAF region with parent layout as stackLayout.Based on your requirement assign controller and AM.Following region I am using here for demonstration.Region Name : XXCUSTNotificationRN2) In the workflow create a message attribute.Value: JSP:/OA_HTML/OA.jsp?OAFunc=XXCUST_NOTIFICATION_RN-&audit_id=-&AUDIT_ID-&wfid=-&WF_IDaudit_id and wfid are the parameters I am using inside the OAF region. Output

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• Announcing release of ASP.NET MVC 3, IIS Express, SQL CE 4, Web Farm Framework, Orchard, WebMatrix

  - by ScottGu

  I’m excited to announce the release today of several products: ASP.NET MVC 3 NuGet IIS Express 7.5 SQL Server Compact Edition 4 Web Deploy and Web Farm Framework 2.0 Orchard 1.0 WebMatrix 1.0 The above products are all free. They build upon the .NET 4 and VS 2010 release, and add a ton of additional value to ASP.NET (both Web Forms and MVC) and the Microsoft Web Server stack. ASP.NET MVC 3 Today we are shipping the final release of ASP.NET MVC 3.  You can download and install ASP.NET MVC 3 here.  The ASP.NET MVC 3 source code (released under an OSI-compliant open source license) can also optionally be downloaded here. ASP.NET MVC 3 is a significant update that brings with it a bunch of great features.  Some of the improvements include: Razor ASP.NET MVC 3 ships with a new view-engine option called “Razor” (in addition to continuing to support/enhance the existing .aspx view engine).  Razor minimizes the number of characters and keystrokes required when writing a view template, and enables a fast, fluid coding workflow. Unlike most template syntaxes, with Razor you do not need to interrupt your coding to explicitly denote the start and end of server blocks within your HTML. The Razor parser is smart enough to infer this from your code. This enables a compact and expressive syntax which is clean, fast and fun to type.  You can learn more about Razor from some of the blog posts I’ve done about it over the last 6 months Introducing Razor New @model keyword in Razor Layouts with Razor Server-Side Comments with Razor Razor’s @: and <text> syntax Implicit and Explicit code nuggets with Razor Layouts and Sections with Razor Today’s release supports full code intellisense support for Razor (both VB and C#) with Visual Studio 2010 and the free Visual Web Developer 2010 Express. JavaScript Improvements ASP.NET MVC 3 enables richer JavaScript scenarios and takes advantage of emerging HTML5 capabilities. The AJAX and Validation helpers in ASP.NET MVC 3 now use an Unobtrusive JavaScript based approach.  Unobtrusive JavaScript avoids injecting inline JavaScript into HTML, and enables cleaner separation of behavior using the new HTML 5 “data-“ attribute convention (which conveniently works on older browsers as well – including IE6). This keeps your HTML tight and clean, and makes it easier to optionally swap out or customize JS libraries.  ASP.NET MVC 3 now includes built-in support for posting JSON-based parameters from client-side JavaScript to action methods on the server.  This makes it easier to exchange data across the client and server, and build rich JavaScript front-ends.  We think this capability will be particularly useful going forward with scenarios involving client templates and data binding (including the jQuery plugins the ASP.NET team recently contributed to the jQuery project).  Previous releases of ASP.NET MVC included the core jQuery library.  ASP.NET MVC 3 also now ships the jQuery Validate plugin (which our validation helpers use for client-side validation scenarios).  We are also now shipping and including jQuery UI by default as well (which provides a rich set of client-side JavaScript UI widgets for you to use within projects). Improved Validation ASP.NET MVC 3 includes a bunch of validation enhancements that make it even easier to work with data. Client-side validation is now enabled by default with ASP.NET MVC 3 (using an onbtrusive javascript implementation).  Today’s release also includes built-in support for Remote Validation - which enables you to annotate a model class with a validation attribute that causes ASP.NET MVC to perform a remote validation call to a server method when validating input on the client. The validation features introduced within .NET 4’s System.ComponentModel.DataAnnotations namespace are now supported by ASP.NET MVC 3.  This includes support for the new IValidatableObject interface – which enables you to perform model-level validation, and allows you to provide validation error messages specific to the state of the overall model, or between two properties within the model.  ASP.NET MVC 3 also supports the improvements made to the ValidationAttribute class in .NET 4.  ValidationAttribute now supports a new IsValid overload that provides more information about the current validation context, such as what object is being validated.  This enables richer scenarios where you can validate the current value based on another property of the model.  We’ve shipped a built-in [Compare] validation attribute  with ASP.NET MVC 3 that uses this support and makes it easy out of the box to compare and validate two property values. You can use any data access API or technology with ASP.NET MVC.  This past year, though, we’ve worked closely with the .NET data team to ensure that the new EF Code First library works really well for ASP.NET MVC applications.  These two posts of mine cover the latest EF Code First preview and demonstrates how to use it with ASP.NET MVC 3 to enable easy editing of data (with end to end client+server validation support).  The final release of EF Code First will ship in the next few weeks. Today we are also publishing the first preview of a new MvcScaffolding project.  It enables you to easily scaffold ASP.NET MVC 3 Controllers and Views, and works great with EF Code-First (and is pluggable to support other data providers).  You can learn more about it – and install it via NuGet today - from Steve Sanderson’s MvcScaffolding blog post. Output Caching Previous releases of ASP.NET MVC supported output caching content at a URL or action-method level. With ASP.NET MVC V3 we are also enabling support for partial page output caching – which allows you to easily output cache regions or fragments of a response as opposed to the entire thing.  This ends up being super useful in a lot of scenarios, and enables you to dramatically reduce the work your application does on the server.  The new partial page output caching support in ASP.NET MVC 3 enables you to easily re-use cached sub-regions/fragments of a page across multiple URLs on a site.  It supports the ability to cache the content either on the web-server, or optionally cache it within a distributed cache server like Windows Server AppFabric or memcached. I’ll post some tutorials on my blog that show how to take advantage of ASP.NET MVC 3’s new output caching support for partial page scenarios in the future. Better Dependency Injection ASP.NET MVC 3 provides better support for applying Dependency Injection (DI) and integrating with Dependency Injection/IOC containers. With ASP.NET MVC 3 you no longer need to author custom ControllerFactory classes in order to enable DI with Controllers.  You can instead just register a Dependency Injection framework with ASP.NET MVC 3 and it will resolve dependencies not only for Controllers, but also for Views, Action Filters, Model Binders, Value Providers, Validation Providers, and Model Metadata Providers that you use within your application. This makes it much easier to cleanly integrate dependency injection within your projects. Other Goodies ASP.NET MVC 3 includes dozens of other nice improvements that help to both reduce the amount of code you write, and make the code you do write cleaner.  Here are just a few examples: Improved New Project dialog that makes it easy to start new ASP.NET MVC 3 projects from templates. Improved Add->View Scaffolding support that enables the generation of even cleaner view templates. New ViewBag property that uses .NET 4’s dynamic support to make it easy to pass late-bound data from Controllers to Views. Global Filters support that allows specifying cross-cutting filter attributes (like [HandleError]) across all Controllers within an app. New [AllowHtml] attribute that allows for more granular request validation when binding form posted data to models. Sessionless controller support that allows fine grained control over whether SessionState is enabled on a Controller. New ActionResult types like HttpNotFoundResult and RedirectPermanent for common HTTP scenarios. New Html.Raw() helper to indicate that output should not be HTML encoded. New Crypto helpers for salting and hashing passwords. And much, much more… Learn More about ASP.NET MVC 3 We will be posting lots of tutorials and samples on the http://asp.net/mvc site in the weeks ahead.  Below are two good ASP.NET MVC 3 tutorials available on the site today: Build your First ASP.NET MVC 3 Application: VB and C# Building the ASP.NET MVC 3 Music Store We’ll post additional ASP.NET MVC 3 tutorials and videos on the http://asp.net/mvc site in the future. Visit it regularly to find new tutorials as they are published. How to Upgrade Existing Projects ASP.NET MVC 3 is compatible with ASP.NET MVC 2 – which means it should be easy to update existing MVC projects to ASP.NET MVC 3.  The new features in ASP.NET MVC 3 build on top of the foundational work we’ve already done with the MVC 1 and MVC 2 releases – which means that the skills, knowledge, libraries, and books you’ve acquired are all directly applicable with the MVC 3 release.  MVC 3 adds new features and capabilities – it doesn’t obsolete existing ones. You can upgrade existing ASP.NET MVC 2 projects by following the manual upgrade steps in the release notes.  Alternatively, you can use this automated ASP.NET MVC 3 upgrade tool to easily update your  existing projects. Localized Builds Today’s ASP.NET MVC 3 release is available in English.  We will be releasing localized versions of ASP.NET MVC 3 (in 9 languages) in a few days.  I’ll blog pointers to the localized downloads once they are available. NuGet Today we are also shipping NuGet – a free, open source, package manager that makes it easy for you to find, install, and use open source libraries in your projects. It works with all .NET project types (including ASP.NET Web Forms, ASP.NET MVC, WPF, WinForms, Silverlight, and Class Libraries).  You can download and install it here. NuGet enables developers who maintain open source projects (for example, .NET projects like Moq, NHibernate, Ninject, StructureMap, NUnit, Windsor, Raven, Elmah, etc) to package up their libraries and register them with an online gallery/catalog that is searchable.  The client-side NuGet tools – which include full Visual Studio integration – make it trivial for any .NET developer who wants to use one of these libraries to easily find and install it within the project they are working on. NuGet handles dependency management between libraries (for example: library1 depends on library2). It also makes it easy to update (and optionally remove) libraries from your projects later. It supports updating web.config files (if a package needs configuration settings). It also allows packages to add PowerShell scripts to a project (for example: scaffold commands). Importantly, NuGet is transparent and clean – and does not install anything at the system level. Instead it is focused on making it easy to manage libraries you use with your projects. Our goal with NuGet is to make it as simple as possible to integrate open source libraries within .NET projects.  NuGet Gallery This week we also launched a beta version of the http://nuget.org web-site – which allows anyone to easily search and browse an online gallery of open source packages available via NuGet.  The site also now allows developers to optionally submit new packages that they wish to share with others.  You can learn more about how to create and share a package here. There are hundreds of open-source .NET projects already within the NuGet Gallery today.  We hope to have thousands there in the future. IIS Express 7.5 Today we are also shipping IIS Express 7.5.  IIS Express is a free version of IIS 7.5 that is optimized for developer scenarios.  It works for both ASP.NET Web Forms and ASP.NET MVC project types. We think IIS Express combines the ease of use of the ASP.NET Web Server (aka Cassini) currently built-into Visual Studio today with the full power of IIS.  Specifically: It’s lightweight and easy to install (less than 5Mb download and a quick install) It does not require an administrator account to run/debug applications from Visual Studio It enables a full web-server feature set – including SSL, URL Rewrite, and other IIS 7.x modules It supports and enables the same extensibility model and web.config file settings that IIS 7.x support It can be installed side-by-side with the full IIS web server as well as the ASP.NET Development Server (they do not conflict at all) It works on Windows XP and higher operating systems – giving you a full IIS 7.x developer feature-set on all Windows OS platforms IIS Express (like the ASP.NET Development Server) can be quickly launched to run a site from a directory on disk.  It does not require any registration/configuration steps. This makes it really easy to launch and run for development scenarios.  You can also optionally redistribute IIS Express with your own applications if you want a lightweight web-server.  The standard IIS Express EULA now includes redistributable rights. Visual Studio 2010 SP1 adds support for IIS Express.  Read my VS 2010 SP1 and IIS Express blog post to learn more about what it enables.  SQL Server Compact Edition 4 Today we are also shipping SQL Server Compact Edition 4 (aka SQL CE 4).  SQL CE is a free, embedded, database engine that enables easy database storage. No Database Installation Required SQL CE does not require you to run a setup or install a database server in order to use it.  You can simply copy the SQL CE binaries into the \bin directory of your ASP.NET application, and then your web application can use it as a database engine.  No setup or extra security permissions are required for it to run. You do not need to have an administrator account on the machine. Just copy your web application onto any server and it will work. This is true even of medium-trust applications running in a web hosting environment. SQL CE runs in-memory within your ASP.NET application and will start-up when you first access a SQL CE database, and will automatically shutdown when your application is unloaded.  SQL CE databases are stored as files that live within the \App_Data folder of your ASP.NET Applications. Works with Existing Data APIs SQL CE 4 works with existing .NET-based data APIs, and supports a SQL Server compatible query syntax.  This means you can use existing data APIs like ADO.NET, as well as use higher-level ORMs like Entity Framework and NHibernate with SQL CE.  This enables you to use the same data programming skills and data APIs you know today. Supports Development, Testing and Production Scenarios SQL CE can be used for development scenarios, testing scenarios, and light production usage scenarios.  With the SQL CE 4 release we’ve done the engineering work to ensure that SQL CE won’t crash or deadlock when used in a multi-threaded server scenario (like ASP.NET).  This is a big change from previous releases of SQL CE – which were designed for client-only scenarios and which explicitly blocked running in web-server environments.  Starting with SQL CE 4 you can use it in a web-server as well. There are no license restrictions with SQL CE.  It is also totally free. Tooling Support with VS 2010 SP1 Visual Studio 2010 SP1 adds support for SQL CE 4 and ASP.NET Projects.  Read my VS 2010 SP1 and SQL CE 4 blog post to learn more about what it enables.  Web Deploy and Web Farm Framework 2.0 Today we are also releasing Microsoft Web Deploy V2 and Microsoft Web Farm Framework V2.  These services provide a flexible and powerful way to deploy ASP.NET applications onto either a single server, or across a web farm of machines. You can learn more about these capabilities from my previous blog posts on them: Introducing the Microsoft Web Farm Framework Automating Deployment with Microsoft Web Deploy Visit the http://iis.net website to learn more and install them. Both are free. Orchard 1.0 Today we are also releasing Orchard v1.0.  Orchard is a free, open source, community based project.  It provides Content Management System (CMS) and Blogging System support out of the box, and makes it possible to easily create and manage web-sites without having to write code (site owners can customize a site through the browser-based editing tools built-into Orchard).  Read these tutorials to learn more about how you can setup and manage your own Orchard site. Orchard itself is built as an ASP.NET MVC 3 application using Razor view templates (and by default uses SQL CE 4 for data storage).  Developers wishing to extend an Orchard site with custom functionality can open and edit it as a Visual Studio project – and add new ASP.NET MVC Controllers/Views to it.  WebMatrix 1.0 WebMatrix is a new, free, web development tool from Microsoft that provides a suite of technologies that make it easier to enable website development.  It enables a developer to start a new site by browsing and downloading an app template from an online gallery of web applications (which includes popular apps like Umbraco, DotNetNuke, Orchard, WordPress, Drupal and Joomla).  Alternatively it also enables developers to create and code web sites from scratch. WebMatrix is task focused and helps guide developers as they work on sites.  WebMatrix includes IIS Express, SQL CE 4, and ASP.NET - providing an integrated web-server, database and programming framework combination.  It also includes built-in web publishing support which makes it easy to find and deploy sites to web hosting providers. You can learn more about WebMatrix from my Introducing WebMatrix blog post this summer.  Visit http://microsoft.com/web to download and install it today. Summary I’m really excited about today’s releases – they provide a bunch of additional value that makes web development with ASP.NET, Visual Studio and the Microsoft Web Server a lot better.  A lot of folks worked hard to share this with you today. On behalf of my whole team – we hope you enjoy them! Scott P.S. In addition to blogging, I am also now using Twitter for quick updates and to share links. Follow me at: twitter.com/scottgu

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• How fast are my services? Comparing basicHttpBinding and ws2007HttpBinding using the SO-Aware Test Workbench

  - by gsusx

  When working on real world WCF solutions, we become pretty aware of the performance implications of the binding and behavior configuration of WCF services. However, whether it’s a known fact the different binding and behavior configurations have direct reflections on the performance of WCF services, developers often struggle to figure out the real performance behavior of the services. We can attribute this to the lack of tools for correctly testing the performance characteristics of WCF services...(read more)

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• Maintain scroll position in ASP.NET

  - by nikolaosk

  One of the most common questions I get is " How to maintain the scroll position-location when a postback occurs in our ASP.NET application? " A lot of times when we click on a e.g a button in our application and a postback occurs, our application "loses" its scroll position. The default behaviour is to go back to the top of the page. There is a very nice feature in ASP.NET that enables us to maintain the scroll position in ASP.NET. The name of this attribute is MaintainScrollPositionOnPostBack ....(read more)

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• Maintain scroll position in ASP.NET

  - by nikolaosk

  One of the most common questions I get is " How to maintain the scroll position-location when a postback occurs in our ASP.NET application? " A lot of times when we click on a e.g a button in our application and a postback occurs, our application "loses" its scroll position. The default behaviour is to go back to the top of the page. There is a very nice feature in ASP.NET that enables us to maintain the scroll position in ASP.NET. The name of this attribute is MaintainScrollPositionOnPostBack ....(read more)

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• New HTML 5 input types in ASP.Net 4.5 Developer Preview

  - by sreejukg

  Microsoft has released developer previews for Visual Studio 2011 and .Net framework 4.5. There are lots of new features available in the developer preview. One of the most interested things for web developers is the support introduced for new HTML 5 form controls. The following are the list of new controls available in HTML 5 email url number range Date pickers (date, month, week, time, datetime, datetime-local) search color Describing the functionality for these controls is not in the scope of this article. If you want to know about these controls, refer the below URLs http://msdn.microsoft.com/en-us/magazine/hh547102.aspx http://www.w3schools.com/html5/html5_form_input_types.asp ASP.Net 4.5 introduced more possible values to the Text Mode attribute to cater the above requirements. Let us evaluate these. I have created a project in Visual Studio 2011 developer preview, and created a page named “controls.aspx”. In the page I placed on Text box control from the toolbox Now select the control and go to the properties pane, look at the TextMode attribute. Now you can see more options are added here than prior versions of ASP.Net. I just selected Email as TextMode. I added one button to submit my page. The screen shot of the page in Visual Studio 2011 designer is as follows See the corresponding markup <form id="form1" runat="server">     <div>         Enter your email:         <asp:TextBox ID="TextBox1" runat="server" TextMode="Email"></asp:TextBox     </div>     <asp:Button ID="Button1" runat="server" Text="Submit" /> </form> Now let me run this page, IE 9 do not have the support for new form fields. I browsed the page using Firefox and the page appears as below. From the source of the rendered page, I saw the below markup for my email textbox <input name="TextBox1" type="email" id="TextBox1" /> Try to enter an invalid email and you will see the browser will ask you to enter a valid one by default. When rendered in non-supported browsers, these fields are behaving just as normal text boxes. So make sure you are using validation controls with these fields. See the browser support compatability matrix with these controls with various browser vendors. ASP.Net 4.5 introduced the support for these new form controls. You can build interactive forms using the newly added controls, keeping in mind that you need to validate the data for non-supported browsers.

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• Overwriting TFS Web Services

  - by javarg

  In this blog I will share a technique I used to intercept TFS Web Services calls. This technique is a very invasive one and requires you to overwrite default TFS Web Services behavior. I only recommend taking such an approach when other means of TFS extensibility fail to provide the same functionality (this is not a supported TFS extensibility point). For instance, intercepting and aborting a Work Item change operation could be implemented using this approach (consider TFS Subscribers functionality before taking this approach, check Martin’s post about subscribers). So let’s get started. The technique consists in versioning TFS Web Services .asmx service classes. If you look into TFS’s ASMX services you will notice that versioning is supported by creating a class hierarchy between different product versions. For instance, let’s take the Work Item management service .asmx. Check the following .asmx file located at: %Program Files%\Microsoft Team Foundation Server 2010\Application Tier\Web Services\_tfs_resources\WorkItemTracking\v3.0\ClientService.asmx The .asmx references the class Microsoft.TeamFoundation.WorkItemTracking.Server.ClientService3: <%-- Copyright (c) Microsoft Corporation. All rights reserved. --%> <%@ webservice language="C#" Class="Microsoft.TeamFoundation.WorkItemTracking.Server.ClientService3" %> .csharpcode, .csharpcode pre { font-size: small; color: black; font-family: consolas, "Courier New", courier, monospace; background-color: #ffffff; /*white-space: pre;*/ } .csharpcode pre { margin: 0em; } .csharpcode .rem { color: #008000; } .csharpcode .kwrd { color: #0000ff; } .csharpcode .str { color: #006080; } .csharpcode .op { color: #0000c0; } .csharpcode .preproc { color: #cc6633; } .csharpcode .asp { background-color: #ffff00; } .csharpcode .html { color: #800000; } .csharpcode .attr { color: #ff0000; } .csharpcode .alt { background-color: #f4f4f4; width: 100%; margin: 0em; } .csharpcode .lnum { color: #606060; } .csharpcode, .csharpcode pre { font-size: small; color: black; font-family: consolas, "Courier New", courier, monospace; background-color: #ffffff; /*white-space: pre;*/ } .csharpcode pre { margin: 0em; } .csharpcode .rem { color: #008000; } .csharpcode .kwrd { color: #0000ff; } .csharpcode .str { color: #006080; } .csharpcode .op { color: #0000c0; } .csharpcode .preproc { color: #cc6633; } .csharpcode .asp { background-color: #ffff00; } .csharpcode .html { color: #800000; } .csharpcode .attr { color: #ff0000; } .csharpcode .alt { background-color: #f4f4f4; width: 100%; margin: 0em; } .csharpcode .lnum { color: #606060; } The inheritance hierarchy for this service class follows: Note the naming convention used for service versioning (ClientService3, ClientService2, ClientService). We will need to overwrite the latest service version provided by the product (in this case ClientService3 for TFS 2010). The following example intercepts and analyzes WorkItem fields. Suppose we need to validate state changes with more advanced logic other than the provided validations/constraints of the process template. Important: Backup the original .asmx file and create one of your own. Create a Visual Studio Web App Project and include a new ASMX Web Service in the project Add the following references to the project (check the folder %Program Files%\Microsoft Team Foundation Server 2010\Application Tier\Web Services\bin\): Microsoft.TeamFoundation.Framework.Server.dll Microsoft.TeamFoundation.Server.dll Microsoft.TeamFoundation.Server.dll Microsoft.TeamFoundation.WorkItemTracking.Client.QueryLanguage.dll Microsoft.TeamFoundation.WorkItemTracking.Server.DataAccessLayer.dll Microsoft.TeamFoundation.WorkItemTracking.Server.DataServices.dll Replace the default service implementation with the something similar to the following code: Code Snippet /// <summary> /// Inherit from ClientService3 to overwrite default Implementation /// </summary> [WebService(Namespace = "http://schemas.microsoft.com/TeamFoundation/2005/06/WorkItemTracking/ClientServices/03", Description = "Custom Team Foundation WorkItemTracking ClientService Web Service")] public class CustomTfsClientService : ClientService3 {     [WebMethod, SoapHeader("requestHeader", Direction = SoapHeaderDirection.In)]     public override bool BulkUpdate(         XmlElement package,         out XmlElement result,         MetadataTableHaveEntry[] metadataHave,         out string dbStamp,         out Payload metadata)     {         var xe = XElement.Parse(package.OuterXml);         // We only intercept WorkItems Updates (we can easily extend this sample to capture any operation).         var wit = xe.Element("UpdateWorkItem");         if (wit != null)         {             if (wit.Attribute("WorkItemID") != null)             {                 int witId = (int)wit.Attribute("WorkItemID");                 // With this Id. I can query TFS for more detailed information, using TFS Client API (assuming the WIT already exists).                 var stateChanged =                     wit.Element("Columns").Elements("Column").FirstOrDefault(c => (string)c.Attribute("Column") == "System.State");                 if (stateChanged != null)                 {                     var newStateName = stateChanged.Element("Value").Value;                     if (newStateName == "Resolved")                     {                         throw new Exception("Cannot change state to Resolved!");                     }                 }             }         }         // Finally, we call base method implementation         return base.BulkUpdate(package, out result, metadataHave, out dbStamp, out metadata);     } } .csharpcode, .csharpcode pre { font-size: small; color: black; font-family: consolas, "Courier New", courier, monospace; background-color: #ffffff; /*white-space: pre;*/ } .csharpcode pre { margin: 0em; } .csharpcode .rem { color: #008000; } .csharpcode .kwrd { color: #0000ff; } .csharpcode .str { color: #006080; } .csharpcode .op { color: #0000c0; } .csharpcode .preproc { color: #cc6633; } .csharpcode .asp { background-color: #ffff00; } .csharpcode .html { color: #800000; } .csharpcode .attr { color: #ff0000; } .csharpcode .alt { background-color: #f4f4f4; width: 100%; margin: 0em; } .csharpcode .lnum { color: #606060; } 4. Build your solution and overwrite the original .asmx with the new implementation referencing our new service version (don’t forget to backup it up first). 5. Copy your project’s .dll into the following path: %Program Files%\Microsoft Team Foundation Server 2010\Application Tier\Web Services\bin 6. Try saving a WorkItem into the Resolved state. Enjoy!

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• I can't install using Wubi due to permission denied error

  - by Taksh Sharma

  I can't install ubuntu 11.10 inside my windows 7. It shows permission denied while installation. It gave a log file having the following data: 03-29 20:19 DEBUG TaskList: # Running tasklist... 03-29 20:19 DEBUG TaskList: ## Running select_target_dir... 03-29 20:19 INFO WindowsBackend: Installing into D:\ubuntu 03-29 20:19 DEBUG TaskList: ## Finished select_target_dir 03-29 20:19 DEBUG TaskList: ## Running create_dir_structure... 03-29 20:19 DEBUG CommonBackend: Creating dir D:\ubuntu 03-29 20:19 DEBUG CommonBackend: Creating dir D:\ubuntu\disks 03-29 20:19 DEBUG CommonBackend: Creating dir D:\ubuntu\install 03-29 20:19 DEBUG CommonBackend: Creating dir D:\ubuntu\install\boot 03-29 20:19 DEBUG CommonBackend: Creating dir D:\ubuntu\disks\boot 03-29 20:19 DEBUG CommonBackend: Creating dir D:\ubuntu\disks\boot\grub 03-29 20:19 DEBUG CommonBackend: Creating dir D:\ubuntu\install\boot\grub 03-29 20:19 DEBUG TaskList: ## Finished create_dir_structure 03-29 20:19 DEBUG TaskList: ## Running uncompress_target_dir... 03-29 20:19 DEBUG TaskList: ## Finished uncompress_target_dir 03-29 20:19 DEBUG TaskList: ## Running create_uninstaller... 03-29 20:19 DEBUG WindowsBackend: Copying uninstaller E:\wubi.exe -> D:\ubuntu\uninstall-wubi.exe 03-29 20:19 DEBUG registry: Setting registry key -2147483646 Software\Microsoft\Windows\CurrentVersion\Uninstall\Wubi UninstallString D:\ubuntu\uninstall-wubi.exe 03-29 20:19 DEBUG registry: Setting registry key -2147483646 Software\Microsoft\Windows\CurrentVersion\Uninstall\Wubi InstallationDir D:\ubuntu 03-29 20:19 DEBUG registry: Setting registry key -2147483646 Software\Microsoft\Windows\CurrentVersion\Uninstall\Wubi DisplayName Ubuntu 03-29 20:19 DEBUG registry: Setting registry key -2147483646 Software\Microsoft\Windows\CurrentVersion\Uninstall\Wubi DisplayIcon D:\ubuntu\Ubuntu.ico 03-29 20:19 DEBUG registry: Setting registry key -2147483646 Software\Microsoft\Windows\CurrentVersion\Uninstall\Wubi DisplayVersion 11.10-rev241 03-29 20:19 DEBUG registry: Setting registry key -2147483646 Software\Microsoft\Windows\CurrentVersion\Uninstall\Wubi Publisher Ubuntu 03-29 20:19 DEBUG registry: Setting registry key -2147483646 Software\Microsoft\Windows\CurrentVersion\Uninstall\Wubi URLInfoAbout http://www.ubuntu.com 03-29 20:19 DEBUG registry: Setting registry key -2147483646 Software\Microsoft\Windows\CurrentVersion\Uninstall\Wubi HelpLink http://www.ubuntu.com/support 03-29 20:19 DEBUG TaskList: ## Finished create_uninstaller 03-29 20:19 DEBUG TaskList: ## Running copy_installation_files... 03-29 20:19 DEBUG WindowsBackend: Copying C:\Users\Home\AppData\Local\Temp\pylB911.tmp\data\custom-installation -> D:\ubuntu\install\custom-installation 03-29 20:19 DEBUG WindowsBackend: Copying C:\Users\Home\AppData\Local\Temp\pylB911.tmp\winboot -> D:\ubuntu\winboot 03-29 20:19 DEBUG WindowsBackend: Copying C:\Users\Home\AppData\Local\Temp\pylB911.tmp\data\images\Ubuntu.ico -> D:\ubuntu\Ubuntu.ico 03-29 20:19 DEBUG TaskList: ## Finished copy_installation_files 03-29 20:19 DEBUG TaskList: ## Running get_iso... 03-29 20:19 DEBUG TaskList: New task copy_file 03-29 20:19 DEBUG TaskList: ### Running copy_file... 03-29 20:23 ERROR TaskList: [Errno 13] Permission denied Traceback (most recent call last): File "\lib\wubi\backends\common\tasklist.py", line 197, in __call__ File "\lib\wubi\backends\common\utils.py", line 202, in copy_file IOError: [Errno 13] Permission denied 03-29 20:23 DEBUG TaskList: # Cancelling tasklist 03-29 20:23 DEBUG TaskList: New task check_iso 03-29 20:23 ERROR root: [Errno 13] Permission denied Traceback (most recent call last): File "\lib\wubi\application.py", line 58, in run File "\lib\wubi\application.py", line 130, in select_task File "\lib\wubi\application.py", line 205, in run_cd_menu File "\lib\wubi\application.py", line 120, in select_task File "\lib\wubi\application.py", line 158, in run_installer File "\lib\wubi\backends\common\tasklist.py", line 197, in __call__ File "\lib\wubi\backends\common\utils.py", line 202, in copy_file IOError: [Errno 13] Permission denied 03-29 20:23 ERROR TaskList: 'WindowsBackend' object has no attribute 'iso_path' Traceback (most recent call last): File "\lib\wubi\backends\common\tasklist.py", line 197, in __call__ File "\lib\wubi\backends\common\backend.py", line 579, in get_iso File "\lib\wubi\backends\common\backend.py", line 565, in use_iso AttributeError: 'WindowsBackend' object has no attribute 'iso_path' 03-29 20:23 DEBUG TaskList: # Cancelling tasklist 03-29 20:23 DEBUG TaskList: # Finished tasklist 03-29 20:29 INFO root: === wubi 11.10 rev241 === 03-29 20:29 DEBUG root: Logfile is c:\users\home\appdata\local\temp\wubi-11.10-rev241.log 03-29 20:29 DEBUG root: sys.argv = ['main.pyo', '--exefile="E:\\wubi.exe"'] 03-29 20:29 DEBUG CommonBackend: data_dir=C:\Users\Home\AppData\Local\Temp\pyl3487.tmp\data 03-29 20:29 DEBUG WindowsBackend: 7z=C:\Users\Home\AppData\Local\Temp\pyl3487.tmp\bin\7z.exe 03-29 20:29 DEBUG WindowsBackend: startup_folder=C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup 03-29 20:29 DEBUG CommonBackend: Fetching basic info... 03-29 20:29 DEBUG CommonBackend: original_exe=E:\wubi.exe 03-29 20:29 DEBUG CommonBackend: platform=win32 03-29 20:29 DEBUG CommonBackend: osname=nt 03-29 20:29 DEBUG CommonBackend: language=en_IN 03-29 20:29 DEBUG CommonBackend: encoding=cp1252 03-29 20:29 DEBUG WindowsBackend: arch=amd64 03-29 20:29 DEBUG CommonBackend: Parsing isolist=C:\Users\Home\AppData\Local\Temp\pyl3487.tmp\data\isolist.ini 03-29 20:29 DEBUG CommonBackend: Adding distro Xubuntu-i386 03-29 20:29 DEBUG CommonBackend: Adding distro Xubuntu-amd64 03-29 20:29 DEBUG CommonBackend: Adding distro Kubuntu-amd64 03-29 20:29 DEBUG CommonBackend: Adding distro Mythbuntu-i386 03-29 20:29 DEBUG CommonBackend: Adding distro Ubuntu-amd64 03-29 20:29 DEBUG CommonBackend: Adding distro Ubuntu-i386 03-29 20:29 DEBUG CommonBackend: Adding distro Mythbuntu-amd64 03-29 20:29 DEBUG CommonBackend: Adding distro Kubuntu-i386 03-29 20:29 DEBUG WindowsBackend: Fetching host info... 03-29 20:29 DEBUG WindowsBackend: registry_key=Software\Microsoft\Windows\CurrentVersion\Uninstall\Wubi 03-29 20:29 DEBUG WindowsBackend: windows version=vista 03-29 20:29 DEBUG WindowsBackend: windows_version2=Windows 7 Home Basic 03-29 20:29 DEBUG WindowsBackend: windows_sp=None 03-29 20:29 DEBUG WindowsBackend: windows_build=7601 03-29 20:29 DEBUG WindowsBackend: gmt=5 03-29 20:29 DEBUG WindowsBackend: country=IN 03-29 20:29 DEBUG WindowsBackend: timezone=Asia/Calcutta 03-29 20:29 DEBUG WindowsBackend: windows_username=Home 03-29 20:29 DEBUG WindowsBackend: user_full_name=Home 03-29 20:29 DEBUG WindowsBackend: user_directory=C:\Users\Home 03-29 20:29 DEBUG WindowsBackend: windows_language_code=1033 03-29 20:29 DEBUG WindowsBackend: windows_language=English 03-29 20:29 DEBUG WindowsBackend: processor_name=Intel(R) Core(TM) i3 CPU M 370 @ 2.40GHz 03-29 20:29 DEBUG WindowsBackend: bootloader=vista 03-29 20:29 DEBUG WindowsBackend: system_drive=Drive(C: hd 61135.1523438 mb free ntfs) 03-29 20:29 DEBUG WindowsBackend: drive=Drive(C: hd 61135.1523438 mb free ntfs) 03-29 20:29 DEBUG WindowsBackend: drive=Drive(D: hd 12742.5507813 mb free ntfs) 03-29 20:29 DEBUG WindowsBackend: drive=Drive(E: cd 0.0 mb free cdfs) 03-29 20:29 DEBUG WindowsBackend: drive=Drive(F: cd 0.0 mb free ) 03-29 20:29 DEBUG WindowsBackend: drive=Drive(G: hd 93.22265625 mb free fat32) 03-29 20:29 DEBUG WindowsBackend: drive=Drive(Q: hd 0.0 mb free ) 03-29 20:29 DEBUG WindowsBackend: uninstaller_path=D:\ubuntu\uninstall-wubi.exe 03-29 20:29 DEBUG WindowsBackend: previous_target_dir=D:\ubuntu 03-29 20:29 DEBUG WindowsBackend: previous_distro_name=Ubuntu 03-29 20:29 DEBUG WindowsBackend: keyboard_id=67699721 03-29 20:29 DEBUG WindowsBackend: keyboard_layout=us 03-29 20:29 DEBUG WindowsBackend: keyboard_variant= 03-29 20:29 DEBUG CommonBackend: python locale=('en_IN', 'cp1252') 03-29 20:29 DEBUG CommonBackend: locale=en_IN 03-29 20:29 DEBUG WindowsBackend: total_memory_mb=3893.859375 03-29 20:29 DEBUG CommonBackend: Searching ISOs on USB devices 03-29 20:29 DEBUG CommonBackend: Searching for local CDs 03-29 20:29 DEBUG Distro: checking whether C:\Users\Home\AppData\Local\Temp\pyl3487.tmp is a valid Ubuntu CD 03-29 20:29 DEBUG Distro: does not contain C:\Users\Home\AppData\Local\Temp\pyl3487.tmp\casper\filesystem.squashfs 03-29 20:29 DEBUG Distro: checking whether C:\Users\Home\AppData\Local\Temp\pyl3487.tmp is a valid Ubuntu CD 03-29 20:29 DEBUG Distro: does not contain C:\Users\Home\AppData\Local\Temp\pyl3487.tmp\casper\filesystem.squashfs 03-29 20:29 DEBUG Distro: checking whether C:\Users\Home\AppData\Local\Temp\pyl3487.tmp is a valid Kubuntu CD 03-29 20:29 DEBUG Distro: does not contain C:\Users\Home\AppData\Local\Temp\pyl3487.tmp\casper\filesystem.squashfs 03-29 20:29 DEBUG Distro: checking whether C:\Users\Home\AppData\Local\Temp\pyl3487.tmp is a valid Kubuntu CD 03-29 20:29 DEBUG Distro: does not contain C:\Users\Home\AppData\Local\Temp\pyl3487.tmp\casper\filesystem.squashfs 03-29 20:29 DEBUG Distro: checking whether C:\Users\Home\AppData\Local\Temp\pyl3487.tmp is a valid Xubuntu CD 03-29 20:29 DEBUG Distro: does not contain C:\Users\Home\AppData\Local\Temp\pyl3487.tmp\casper\filesystem.squashfs 03-29 20:29 DEBUG Distro: checking whether C:\Users\Home\AppData\Local\Temp\pyl3487.tmp is a valid Xubuntu CD 03-29 20:29 DEBUG Distro: does not contain C:\Users\Home\AppData\Local\Temp\pyl3487.tmp\casper\filesystem.squashfs 03-29 20:29 DEBUG Distro: checking whether C:\Users\Home\AppData\Local\Temp\pyl3487.tmp is a valid Mythbuntu CD 03-29 20:29 DEBUG Distro: does not contain C:\Users\Home\AppData\Local\Temp\pyl3487.tmp\casper\filesystem.squashfs 03-29 20:29 DEBUG Distro: checking whether C:\Users\Home\AppData\Local\Temp\pyl3487.tmp is a valid Mythbuntu CD 03-29 20:29 DEBUG Distro: does not contain C:\Users\Home\AppData\Local\Temp\pyl3487.tmp\casper\filesystem.squashfs 03-29 20:29 DEBUG Distro: checking whether D:\ is a valid Ubuntu CD 03-29 20:29 DEBUG Distro: does not contain D:\casper\filesystem.squashfs 03-29 20:29 DEBUG Distro: checking whether D:\ is a valid Ubuntu CD 03-29 20:29 DEBUG Distro: does not contain D:\casper\filesystem.squashfs 03-29 20:29 DEBUG Distro: checking whether D:\ is a valid Kubuntu CD 03-29 20:29 DEBUG Distro: does not contain D:\casper\filesystem.squashfs 03-29 20:29 DEBUG Distro: checking whether D:\ is a valid Kubuntu CD 03-29 20:29 DEBUG Distro: does not contain D:\casper\filesystem.squashfs 03-29 20:29 DEBUG Distro: checking whether D:\ is a valid Xubuntu CD 03-29 20:29 DEBUG Distro: does not contain D:\casper\filesystem.squashfs 03-29 20:29 DEBUG Distro: checking whether D:\ is a valid Xubuntu CD 03-29 20:29 DEBUG Distro: does not contain D:\casper\filesystem.squashfs 03-29 20:29 DEBUG Distro: checking whether D:\ is a valid Mythbuntu CD 03-29 20:29 DEBUG Distro: does not contain D:\casper\filesystem.squashfs 03-29 20:29 DEBUG Distro: checking whether D:\ is a valid Mythbuntu CD 03-29 20:29 DEBUG Distro: does not contain D:\casper\filesystem.squashfs 03-29 20:29 DEBUG Distro: checking whether E:\ is a valid Ubuntu CD 03-29 20:29 DEBUG Distro: parsing info from str=Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012) 03-29 20:29 DEBUG Distro: parsed info={'name': 'Ubuntu', 'subversion': 'Release', 'version': '11.10', 'build': '20111012', 'codename': 'Oneiric Ocelot', 'arch': 'i386'} 03-29 20:29 INFO Distro: Found a valid CD for Ubuntu: E:\ 03-29 20:29 INFO root: Running the CD menu... 03-29 20:29 DEBUG WindowsFrontend: __init__... 03-29 20:29 DEBUG WindowsFrontend: on_init... 03-29 20:29 INFO WinuiPage: appname=wubi, localedir=C:\Users\Home\AppData\Local\Temp\pyl3487.tmp\translations, languages=['en_IN', 'en'] 03-29 20:29 INFO WinuiPage: appname=wubi, localedir=C:\Users\Home\AppData\Local\Temp\pyl3487.tmp\translations, languages=['en_IN', 'en'] 03-29 20:29 INFO root: CD menu finished 03-29 20:29 INFO root: Already installed, running the uninstaller... 03-29 20:29 INFO root: Running the uninstaller... 03-29 20:29 INFO CommonBackend: This is the uninstaller running 03-29 20:29 INFO WinuiPage: appname=wubi, localedir=C:\Users\Home\AppData\Local\Temp\pyl3487.tmp\translations, languages=['en_IN', 'en'] 03-29 20:29 INFO root: Received settings 03-29 20:29 INFO WinuiPage: appname=wubi, localedir=C:\Users\Home\AppData\Local\Temp\pyl3487.tmp\translations, languages=['en_IN', 'en'] 03-29 20:29 DEBUG TaskList: # Running tasklist... 03-29 20:29 DEBUG TaskList: ## Running Remove bootloader entry... 03-29 20:29 DEBUG WindowsBackend: Could not find bcd id 03-29 20:29 DEBUG WindowsBackend: undo_bootini C: 03-29 20:29 DEBUG WindowsBackend: undo_configsys Drive(C: hd 61135.1523438 mb free ntfs) 03-29 20:29 DEBUG WindowsBackend: undo_bootini D: 03-29 20:29 DEBUG WindowsBackend: undo_configsys Drive(D: hd 12742.5507813 mb free ntfs) 03-29 20:29 DEBUG WindowsBackend: undo_bootini G: 03-29 20:29 DEBUG WindowsBackend: undo_configsys Drive(G: hd 93.22265625 mb free fat32) 03-29 20:29 DEBUG WindowsBackend: undo_bootini Q: 03-29 20:29 DEBUG WindowsBackend: undo_configsys Drive(Q: hd 0.0 mb free ) 03-29 20:29 DEBUG TaskList: ## Finished Remove bootloader entry 03-29 20:29 DEBUG TaskList: ## Running Remove target dir... 03-29 20:29 DEBUG CommonBackend: Deleting D:\ubuntu 03-29 20:29 DEBUG TaskList: ## Finished Remove target dir 03-29 20:29 DEBUG TaskList: ## Running Remove registry key... 03-29 20:29 DEBUG TaskList: ## Finished Remove registry key 03-29 20:29 DEBUG TaskList: # Finished tasklist 03-29 20:29 INFO root: Almost finished uninstalling 03-29 20:29 INFO root: Finished uninstallation 03-29 20:29 DEBUG CommonBackend: Fetching basic info... 03-29 20:29 DEBUG CommonBackend: original_exe=E:\wubi.exe 03-29 20:29 DEBUG CommonBackend: platform=win32 03-29 20:29 DEBUG CommonBackend: osname=nt 03-29 20:29 DEBUG WindowsBackend: arch=amd64 03-29 20:29 DEBUG CommonBackend: Parsing isolist=C:\Users\Home\AppData\Local\Temp\pyl3487.tmp\data\isolist.ini 03-29 20:29 DEBUG CommonBackend: Adding distro Xubuntu-i386 03-29 20:29 DEBUG CommonBackend: Adding distro Xubuntu-amd64 03-29 20:29 DEBUG CommonBackend: Adding distro Kubuntu-amd64 03-29 20:29 DEBUG CommonBackend: Adding distro Mythbuntu-i386 03-29 20:29 DEBUG CommonBackend: Adding distro Ubuntu-amd64 03-29 20:29 DEBUG CommonBackend: Adding distro Ubuntu-i386 03-29 20:29 DEBUG CommonBackend: Adding distro Mythbuntu-amd64 03-29 20:29 DEBUG CommonBackend: Adding distro Kubuntu-i386 03-29 20:29 DEBUG WindowsBackend: Fetching host info... 03-29 20:29 DEBUG WindowsBackend: registry_key=Software\Microsoft\Windows\CurrentVersion\Uninstall\Wubi 03-29 20:29 DEBUG WindowsBackend: windows version=vista 03-29 20:29 DEBUG WindowsBackend: windows_version2=Windows 7 Home Basic 03-29 20:29 DEBUG WindowsBackend: windows_sp=None 03-29 20:29 DEBUG WindowsBackend: windows_build=7601 03-29 20:29 DEBUG WindowsBackend: gmt=5 03-29 20:29 DEBUG WindowsBackend: country=IN 03-29 20:29 DEBUG WindowsBackend: timezone=Asia/Calcutta 03-29 20:29 DEBUG WindowsBackend: windows_username=Home 03-29 20:29 DEBUG WindowsBackend: user_full_name=Home 03-29 20:29 DEBUG WindowsBackend: user_directory=C:\Users\Home 03-29 20:29 DEBUG WindowsBackend: windows_language_code=1033 03-29 20:29 DEBUG WindowsBackend: windows_language=English 03-29 20:29 DEBUG WindowsBackend: processor_name=Intel(R) Core(TM) i3 CPU M 370 @ 2.40GHz 03-29 20:29 DEBUG WindowsBackend: bootloader=vista 03-29 20:29 DEBUG WindowsBackend: system_drive=Drive(C: hd 61134.8632813 mb free ntfs) 03-29 20:29 DEBUG WindowsBackend: drive=Drive(C: hd 61134.8632813 mb free ntfs) 03-29 20:29 DEBUG WindowsBackend: drive=Drive(D: hd 12953.140625 mb free ntfs) 03-29 20:29 DEBUG WindowsBackend: drive=Drive(E: cd 0.0 mb free cdfs) 03-29 20:29 DEBUG WindowsBackend: drive=Drive(F: cd 0.0 mb free ) 03-29 20:29 DEBUG WindowsBackend: drive=Drive(G: hd 93.22265625 mb free fat32) 03-29 20:29 DEBUG WindowsBackend: drive=Drive(Q: hd 0.0 mb free ) 03-29 20:29 DEBUG WindowsBackend: uninstaller_path=None 03-29 20:29 DEBUG WindowsBackend: previous_target_dir=None 03-29 20:29 DEBUG WindowsBackend: previous_distro_name=None 03-29 20:29 DEBUG WindowsBackend: keyboard_id=67699721 03-29 20:29 DEBUG WindowsBackend: keyboard_layout=us 03-29 20:29 DEBUG WindowsBackend: keyboard_variant= 03-29 20:29 DEBUG WindowsBackend: total_memory_mb=3893.859375 03-29 20:29 DEBUG CommonBackend: Searching ISOs on USB devices 03-29 20:29 DEBUG CommonBackend: Searching for local CDs 03-29 20:29 DEBUG Distro: checking whether C:\Users\Home\AppData\Local\Temp\pyl3487.tmp is a valid Ubuntu CD 03-29 20:29 DEBUG Distro: does not contain C:\Users\Home\AppData\Local\Temp\pyl3487.tmp\casper\filesystem.squashfs 03-29 20:29 DEBUG Distro: checking whether C:\Users\Home\AppData\Local\Temp\pyl3487.tmp is a valid Ubuntu CD 03-29 20:29 DEBUG Distro: does not contain C:\Users\Home\AppData\Local\Temp\pyl3487.tmp\casper\filesystem.squashfs 03-29 20:29 DEBUG Distro: checking whether C:\Users\Home\AppData\Local\Temp\pyl3487.tmp is a valid Kubuntu CD 03-29 20:29 DEBUG Distro: does not contain C:\Users\Home\AppData\Local\Temp\pyl3487.tmp\casper\filesystem.squashfs 03-29 20:29 DEBUG Distro: checking whether C:\Users\Home\AppData\Local\Temp\pyl3487.tmp is a valid Kubuntu CD 03-29 20:29 DEBUG Distro: does not contain C:\Users\Home\AppData\Local\Temp\pyl3487.tmp\casper\filesystem.squashfs 03-29 20:29 DEBUG Distro: checking whether C:\Users\Home\AppData\Local\Temp\pyl3487.tmp is a valid Xubuntu CD 03-29 20:29 DEBUG Distro: does not contain C:\Users\Home\AppData\Local\Temp\pyl3487.tmp\casper\filesystem.squashfs 03-29 20:29 DEBUG Distro: checking whether C:\Users\Home\AppData\Local\Temp\pyl3487.tmp is a valid Xubuntu CD 03-29 20:29 DEBUG Distro: does not contain C:\Users\Home\AppData\Local\Temp\pyl3487.tmp\casper\filesystem.squashfs 03-29 20:29 DEBUG Distro: checking whether C:\Users\Home\AppData\Local\Temp\pyl3487.tmp is a valid Mythbuntu CD 03-29 20:29 DEBUG Distro: does not contain C:\Users\Home\AppData\Local\Temp\pyl3487.tmp\casper\filesystem.squashfs 03-29 20:29 DEBUG Distro: checking whether C:\Users\Home\AppData\Local\Temp\pyl3487.tmp is a valid Mythbuntu CD 03-29 20:29 DEBUG Distro: does not contain C:\Users\Home\AppData\Local\Temp\pyl3487.tmp\casper\filesystem.squashfs 03-29 20:29 DEBUG Distro: checking whether D:\ is a valid Ubuntu CD 03-29 20:29 DEBUG Distro: does not contain D:\casper\filesystem.squashfs 03-29 20:29 DEBUG Distro: checking whether D:\ is a valid Ubuntu CD 03-29 20:29 DEBUG Distro: does not contain D:\casper\filesystem.squashfs 03-29 20:29 DEBUG Distro: checking whether D:\ is a valid Kubuntu CD 03-29 20:29 DEBUG Distro: does not contain D:\casper\filesystem.squashfs 03-29 20:29 DEBUG Distro: checking whether D:\ is a valid Kubuntu CD 03-29 20:29 DEBUG Distro: does not contain D:\casper\filesystem.squashfs 03-29 20:29 DEBUG Distro: checking whether D:\ is a valid Xubuntu CD 03-29 20:29 DEBUG Distro: does not contain D:\casper\filesystem.squashfs 03-29 20:29 DEBUG Distro: checking whether D:\ is a valid Xubuntu CD 03-29 20:29 DEBUG Distro: does not contain D:\casper\filesystem.squashfs 03-29 20:29 DEBUG Distro: checking whether D:\ is a valid Mythbuntu CD 03-29 20:29 DEBUG Distro: does not contain D:\casper\filesystem.squashfs 03-29 20:29 DEBUG Distro: checking whether D:\ is a valid Mythbuntu CD 03-29 20:29 DEBUG Distro: does not contain D:\casper\filesystem.squashfs 03-29 20:29 DEBUG Distro: checking whether E:\ is a valid Ubuntu CD 03-29 20:29 INFO Distro: Found a valid CD for Ubuntu: E:\ 03-29 20:29 INFO root: Running the installer... 03-29 20:29 INFO WinuiPage: appname=wubi, localedir=C:\Users\Home\AppData\Local\Temp\pyl3487.tmp\translations, languages=['en_IN', 'en'] 03-29 20:29 INFO WinuiPage: appname=wubi, localedir=C:\Users\Home\AppData\Local\Temp\pyl3487.tmp\translations, languages=['en_IN', 'en'] 03-29 20:30 DEBUG WinuiInstallationPage: target_drive=C:, installation_size=8000MB, distro_name=Ubuntu, language=en_US, locale=en_US.UTF-8, username=taksh 03-29 20:30 INFO root: Received settings 03-29 20:30 INFO WinuiPage: appname=wubi, localedir=C:\Users\Home\AppData\Local\Temp\pyl3487.tmp\translations, languages=['en_US', 'en'] 03-29 20:30 DEBUG TaskList: # Running tasklist... 03-29 20:30 DEBUG TaskList: ## Running select_target_dir... 03-29 20:30 INFO WindowsBackend: Installing into C:\ubuntu 03-29 20:30 DEBUG TaskList: ## Finished select_target_dir 03-29 20:30 DEBUG TaskList: ## Running create_dir_structure... 03-29 20:30 DEBUG CommonBackend: Creating dir C:\ubuntu 03-29 20:30 DEBUG CommonBackend: Creating dir C:\ubuntu\disks 03-29 20:30 DEBUG CommonBackend: Creating dir C:\ubuntu\install 03-29 20:30 DEBUG CommonBackend: Creating dir C:\ubuntu\install\boot 03-29 20:30 DEBUG CommonBackend: Creating dir C:\ubuntu\disks\boot 03-29 20:30 DEBUG CommonBackend: Creating dir C:\ubuntu\disks\boot\grub 03-29 20:30 DEBUG CommonBackend: Creating dir C:\ubuntu\install\boot\grub 03-29 20:30 DEBUG TaskList: ## Finished create_dir_structure 03-29 20:30 DEBUG TaskList: ## Running uncompress_target_dir... 03-29 20:30 DEBUG TaskList: ## Finished uncompress_target_dir 03-29 20:30 DEBUG TaskList: ## Running create_uninstaller... 03-29 20:30 DEBUG WindowsBackend: Copying uninstaller E:\wubi.exe -> C:\ubuntu\uninstall-wubi.exe 03-29 20:30 DEBUG registry: Setting registry key -2147483646 Software\Microsoft\Windows\CurrentVersion\Uninstall\Wubi UninstallString C:\ubuntu\uninstall-wubi.exe 03-29 20:30 DEBUG registry: Setting registry key -2147483646 Software\Microsoft\Windows\CurrentVersion\Uninstall\Wubi InstallationDir C:\ubuntu 03-29 20:30 DEBUG registry: Setting registry key -2147483646 Software\Microsoft\Windows\CurrentVersion\Uninstall\Wubi DisplayName Ubuntu 03-29 20:30 DEBUG registry: Setting registry key -2147483646 Software\Microsoft\Windows\CurrentVersion\Uninstall\Wubi DisplayIcon C:\ubuntu\Ubuntu.ico 03-29 20:30 DEBUG registry: Setting registry key -2147483646 Software\Microsoft\Windows\CurrentVersion\Uninstall\Wubi DisplayVersion 11.10-rev241 03-29 20:30 DEBUG registry: Setting registry key -2147483646 Software\Microsoft\Windows\CurrentVersion\Uninstall\Wubi Publisher Ubuntu 03-29 20:30 DEBUG registry: Setting registry key -2147483646 Software\Microsoft\Windows\CurrentVersion\Uninstall\Wubi URLInfoAbout http://www.ubuntu.com 03-29 20:30 DEBUG registry: Setting registry key -2147483646 Software\Microsoft\Windows\CurrentVersion\Uninstall\Wubi HelpLink http://www.ubuntu.com/support 03-29 20:30 DEBUG TaskList: ## Finished create_uninstaller 03-29 20:30 DEBUG TaskList: ## Running copy_installation_files... 03-29 20:30 DEBUG WindowsBackend: Copying C:\Users\Home\AppData\Local\Temp\pyl3487.tmp\data\custom-installation -> C:\ubuntu\install\custom-installation 03-29 20:30 DEBUG WindowsBackend: Copying C:\Users\Home\AppData\Local\Temp\pyl3487.tmp\winboot -> C:\ubuntu\winboot 03-29 20:30 DEBUG WindowsBackend: Copying C:\Users\Home\AppData\Local\Temp\pyl3487.tmp\data\images\Ubuntu.ico -> C:\ubuntu\Ubuntu.ico 03-29 20:30 DEBUG TaskList: ## Finished copy_installation_files 03-29 20:30 DEBUG TaskList: ## Running get_iso... 03-29 20:30 DEBUG TaskList: New task copy_file 03-29 20:30 DEBUG TaskList: ### Running copy_file... 03-29 20:34 ERROR TaskList: [Errno 13] Permission denied Traceback (most recent call last): File "\lib\wubi\backends\common\tasklist.py", line 197, in __call__ File "\lib\wubi\backends\common\utils.py", line 202, in copy_file IOError: [Errno 13] Permission denied 03-29 20:34 DEBUG TaskList: # Cancelling tasklist 03-29 20:34 DEBUG TaskList: New task check_iso 03-29 20:34 ERROR root: [Errno 13] Permission denied Traceback (most recent call last): File "\lib\wubi\application.py", line 58, in run File "\lib\wubi\application.py", line 130, in select_task File "\lib\wubi\application.py", line 205, in run_cd_menu File "\lib\wubi\application.py", line 120, in select_task File "\lib\wubi\application.py", line 158, in run_installer File "\lib\wubi\backends\common\tasklist.py", line 197, in __call__ File "\lib\wubi\backends\common\utils.py", line 202, in copy_file IOError: [Errno 13] Permission denied 03-29 20:34 ERROR TaskList: 'WindowsBackend' object has no attribute 'iso_path' Traceback (most recent call last): File "\lib\wubi\backends\common\tasklist.py", line 197, in __call__ File "\lib\wubi\backends\common\backend.py", line 579, in get_iso File "\lib\wubi\backends\common\backend.py", line 565, in use_iso AttributeError: 'WindowsBackend' object has no attribute 'iso_path' 03-29 20:34 DEBUG TaskList: # Cancelling tasklist 03-29 20:34 DEBUG TaskList: # Finished tasklist I have no idea what's the problem is. I'm a kind of newbie. I'm using win7 64bit, and installing as an administrator. Please help me out!

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• Unable to run Ubuntu Software center in 12.04

  - by Noye

  I think I've tried everything found. It is on just for a second. I can't even send an error report. What should I do? thanks in advance. so this is what I get after typing software-center in terminal (sorry, not as a code): 2012-06-16 22:54:17,610 - softwarecenter.ui.gtk3.app - INFO - setting up proxy 'None' 2012-06-16 22:54:17,617 - softwarecenter.db.database - INFO - open() database: path=None use_axi=True use_agent=True 2012-06-16 22:54:18,142 - softwarecenter.backend.reviews - WARNING - Could not get usefulness from server, no username in config file 2012-06-16 22:54:18,697 - softwarecenter.db.pkginfo_impl.aptcache - INFO - aptcache.open() Traceback (most recent call last): File "/usr/share/software-center/softwarecenter/db/pkginfo_impl/aptcache.py", line 243, in open self._cache = apt.Cache(GtkMainIterationProgress()) File "/usr/lib/python2.7/dist-packages/apt/cache.py", line 102, in __init__ self.open(progress) File "/usr/lib/python2.7/dist-packages/apt/cache.py", line 149, in open self._list.read_main_list() SystemError: E:Typ „ain“ je neznámy na riadku 2 v zozname zdrojov /etc/apt/sources.list.d/yannubuntu-boot-repair-precise.list 2012-06-16 22:54:21,916 - softwarecenter.db.enquire - ERROR - _get_estimate_nr_apps_and_nr_pkgs failed Traceback (most recent call last): File "/usr/share/software-center/softwarecenter/db/enquire.py", line 115, in _get_estimate_nr_apps_and_nr_pkgs tmp_matches = enquire.get_mset(0, len(self.db), None, xfilter) File "/usr/share/software-center/softwarecenter/db/appfilter.py", line 89, in __call__ if (not pkgname in self.cache and File "/usr/share/software-center/softwarecenter/db/pkginfo_impl/aptcache.py", line 263, in __contains__ return self._cache.__contains__(k) AttributeError: 'NoneType' object has no attribute '__contains__' Traceback (most recent call last): File "/usr/bin/software-center", line 176, in app.run(args) File "/usr/share/software-center/softwarecenter/ui/gtk3/app.py", line 1358, in run self.show_available_packages(args) File "/usr/share/software-center/softwarecenter/ui/gtk3/app.py", line 1288, in show_available_packages self.view_manager.set_active_view(ViewPages.AVAILABLE) File "/usr/share/software-center/softwarecenter/ui/gtk3/session/viewmanager.py", line 149, in set_active_view view_widget.init_view() File "/usr/share/software-center/softwarecenter/ui/gtk3/panes/availablepane.py", line 168, in init_view self.apps_filter) File "/usr/share/software-center/softwarecenter/ui/gtk3/views/catview_gtk.py", line 240, in __init__ self.build(desktopdir) File "/usr/share/software-center/softwarecenter/ui/gtk3/views/catview_gtk.py", line 491, in build self._build_homepage_view() File "/usr/share/software-center/softwarecenter/ui/gtk3/views/catview_gtk.py", line 266, in _build_homepage_view self._append_whats_new() File "/usr/share/software-center/softwarecenter/ui/gtk3/views/catview_gtk.py", line 430, in _append_whats_new whats_new_cat = self._update_whats_new_content() File "/usr/share/software-center/softwarecenter/ui/gtk3/views/catview_gtk.py", line 419, in _update_whats_new_content docs = whats_new_cat.get_documents(self.db) File "/usr/share/software-center/softwarecenter/db/categories.py", line 124, in get_documents nonblocking_load=False) File "/usr/share/software-center/softwarecenter/db/enquire.py", line 317, in set_query self._blocking_perform_search() File "/usr/share/software-center/softwarecenter/db/enquire.py", line 212, in _blocking_perform_search matches = enquire.get_mset(0, self.limit, None, xfilter) File "/usr/share/software-center/softwarecenter/db/appfilter.py", line 89, in __call__ if (not pkgname in self.cache and File "/usr/share/software-center/softwarecenter/db/pkginfo_impl/aptcache.py", line 263, in __contains__ return self._cache.__contains__(k) AttributeError: 'NoneType' object has no attribute '__contains__'

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• Keeping track of File System Utilization in Ops Center 12c

  - by S Stelting

  Enterprise Manager Ops Center 12c provides significant monitoring capabilities, combined with very flexible incident management. These capabilities even extend to monitoring the file systems associated with Solaris or Linux assets. Depending on your needs you can monitor and manage incidents, or you can fine tune alert monitoring rules to specific file systems. This article will show you how to use Ops Center 12c to Track file system utilization Adjust file system monitoring rules Disable file system rules Create custom monitoring rules If you're interested in this topic, please join us for a WebEx presentation! Date: Thursday, November 8, 2012 Time: 11:00 am, Eastern Standard Time (New York, GMT-05:00) Meeting Number: 598 796 842 Meeting Password: oracle123 To join the online meeting ------------------------------------------------------- 1. Go to https://oracleconferencing.webex.com/oracleconferencing/j.php?ED=209833597&UID=1512095432&PW=NOWQ3YjJlMmYy&RT=MiMxMQ%3D%3D 2. If requested, enter your name and email address. 3. If a password is required, enter the meeting password: oracle123 4. Click "Join". To view in other time zones or languages, please click the link: https://oracleconferencing.webex.com/oracleconferencing/j.php?ED=209833597&UID=1512095432&PW=NOWQ3YjJlMmYy&ORT=MiMxMQ%3D%3D   Monitoring File Systems for OS Assets The Libraries tab provides basic, device-level information about the storage associated with an OS instance. This tab shows you the local file system associated with the instance and any shared storage libraries mounted by Ops Center. More detailed information about file system storage is available under the Analytics tab under the sub-tab named Charts. Here, you can select and display the individual mount points of an OS, and export the utilization data if desired: In this example, the OS instance has a basic root file partition and several NFS directories. Each file system mount point can be independently chosen for display in the Ops Center chart. File Systems and Incident  Reporting Every asset managed by Ops Center has a "monitoring policy", which determines what represents a reportable issue with the asset. The policy is made up of a bunch of monitoring rules, where each rule describes An attribute to monitor The conditions which represent an issue The level or levels of severity for the issue When the conditions are met, Ops Center sends a notification and creates an incident. By default, OS instances have three monitoring rules associated with file systems: File System Reachability: Triggers an incident if a file system is not reachable NAS Library Status: Triggers an incident for a value of "WARNING" or "DEGRADED" for a NAS-based file system File System Used Space Percentage: Triggers an incident when file system utilization grows beyond defined thresholds You can view these rules in the Monitoring tab for an OS: Of course, the default monitoring rules is that they apply to every file system associated with an OS instance. As a result, any issue with NAS accessibility or disk utilization will trigger an incident. This can cause incidents for file systems to be reported multiple times if the same shared storage is used by many assets, as shown in this screen shot: Depending on the level of control you'd like, there are a number of ways to fine tune incident reporting. Note that any changes to an asset's monitoring policy will detach it from the default, creating a new monitoring policy for the asset. If you'd like, you can extract a monitoring policy from an asset, which allows you to save it and apply the customized monitoring profile to other OS assets. Solution #1: Modify the Reporting Thresholds In some cases, you may want to modify the basic conditions for incident reporting in your file system. The changes you make to a default monitoring rule will apply to all of the file systems associated with your operating system. Selecting the File Systems Used Space Percentage entry and clicking the "Edit Alert Monitoring Rule Parameters" button opens a pop-up dialog which allows you to modify the rule. The first screen lets you decide when you will check for file system usage, and how long you will wait before opening an incident in Ops Center. By default, Ops Center monitors continuously and reports disk utilization issues which exist for more than 15 minutes. The second screen lets you define actual threshold values. By default, Ops Center opens a Warning level incident is utilization rises above 80%, and a Critical level incident for utilization above 95% Solution #2: Disable Incident Reporting for File System If you'd rather not report file system incidents, you can disable the monitoring rules altogether. In this case, you can select the monitoring rules and click the "Disable Alert Monitoring Rule(s)" button to open the pop-up confirmation dialog. Like the first solution, this option affects all file system monitoring. It allows you to completely disable incident reporting for NAS library status or file system space consumption. Solution #3: Create New Monitoring Rules for Specific File Systems If you'd like to have the greatest flexibility when monitoring file systems, you can create entirely new rules. Clicking the "Add Alert Monitoring Rule" (the icon with the green plus sign) opens a wizard which allows you to define a new rule.  This rule will be based on a threshold, and will be used to monitor operating system assets. We'd like to add a rule to track disk utilization for a specific file system - the /nfs-guest directory. To do this, we specify the following attribute FileSystemUsages.name=/nfs-guest.usedSpacePercentage The value of name in the attribute allows us to define a specific NFS shared directory or file system... in the case of this OS, we could have chosen any of the values shown in the File Systems Utilization chart at the beginning of this article. usedSpacePercentage lets us define a threshold based on the percentage of total disk space used. There are a number of other values that we could use for threshold-based monitoring of FileSystemUsages, including freeSpace freeSpacePercentage totalSpace usedSpace usedSpacePercentage The final sections of the screen allow us to determine when to monitor for disk usage, and how long to wait after utilization reaches a threshold before creating an incident. The next screen lets us define the threshold values and severity levels for the monitoring rule: If historical data is available, Ops Center will display it in the screen. Clicking the Apply button will create the new monitoring rule and active it in your monitoring policy. If you combine this with one of the previous solutions, you can precisely define which file systems will generate incidents and notifications. For example, this monitoring policy has the default "File System Used Space Percentage" rule disabled, but the new rule reports ONLY on utilization for the /nfs-guest directory. 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• Sixeyed.Caching available now on NuGet and GitHub!

  - by Elton Stoneman

  Originally posted on: http://geekswithblogs.net/EltonStoneman/archive/2013/10/22/sixeyed.caching-available-now-on-nuget-and-github.aspxThe good guys at Pluralsight have okayed me to publish my caching framework (as seen in Caching in the .NET Stack: Inside-Out) as an open-source library, and it’s out now. You can get it here: Sixeyed.Caching source code on GitHub, and here: Sixeyed.Caching package v1.0.0 on NuGet. If you haven’t seen the course, there’s a preview here on YouTube: In-Process and Out-of-Process Caches, which gives a good flavour. The library is a wrapper around various cache providers, including the .NET MemoryCache, AppFabric cache, and  memcached*. All the wrappers inherit from a base class which gives you a set of common functionality against all the cache implementations: •    inherits OutputCacheProvider, so you can use your chosen cache provider as an ASP.NET output cache; •    serialization and encryption, so you can configure whether you want your cache items serialized (XML, JSON or binary) and encrypted; •    instrumentation, you can optionally use performance counters to monitor cache attempts and hits, at a low level. The framework wraps up different caches into an ICache interface, and it lets you use a provider directly like this: Cache.Memory.Get<RefData>(refDataKey); - or with configuration to use the default cache provider: Cache.Default.Get<RefData>(refDataKey); The library uses Unity’s interception framework to implement AOP caching, which you can use by flagging methods with the [Cache] attribute: [Cache] public RefData GetItem(string refDataKey) - and you can be more specific on the required cache behaviour: [Cache(CacheType=CacheType.Memory, Days=1] public RefData GetItem(string refDataKey) - or really specific: [Cache(CacheType=CacheType.Disk, SerializationFormat=SerializationFormat.Json, Hours=2, Minutes=59)] public RefData GetItem(string refDataKey) Provided you get instances of classes with cacheable methods from the container, the attributed method results will be cached, and repeated calls will be fetched from the cache. You can also set a bunch of cache defaults in application config, like whether to use encryption and instrumentation, and whether the cache system is enabled at all: <sixeyed.caching enabled="true"> <performanceCounters instrumentCacheTotalCounts="true" instrumentCacheTargetCounts="true" categoryNamePrefix ="Sixeyed.Caching.Tests"/> <encryption enabled="true" key="1234567890abcdef1234567890abcdef" iv="1234567890abcdef"/> <!-- key must be 32 characters, IV must be 16 characters--> </sixeyed.caching> For AOP and methods flagged with the cache attribute, you can override the compile-time cache settings at runtime with more config (keyed by the class and method name): <sixeyed.caching enabled="true"> <targets> <target keyPrefix="MethodLevelCachingStub.GetRandomIntCacheConfiguredInternal" enabled="false"/> <target keyPrefix="MethodLevelCachingStub.GetRandomIntCacheExpiresConfiguredInternal" seconds="1"/> </targets> It’s released under the MIT license, so you can use it freely in your own apps and modify as required. I’ll be adding more content to the GitHub wiki, which will be the main source of documentation, but for now there’s an FAQ to get you started. * - in the course the framework library also wraps NCache Express, but there's no public redistributable library that I can find, so it's not in Sixeyed.Caching.

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• ASP.NET MVC localization DisplayNameAttribute alternatives: a better way

  - by Brian Schroer

  In my last post, I talked bout creating a custom class inheriting from System.ComponentModel.DisplayNameAttribute to retrieve display names from resource files: [LocalizedDisplayName("RememberMe")] public bool RememberMe { get; set; } That’s a lot of work to put an attribute on all of my model properties though. It would be nice if I could intercept the ASP.NET MVC code that analyzes the model metadata to retrieve display names to make it automatically get localized text from my resource files. That way, I could just set up resource file entries where the keys are the property names, and not have to put attributes on all of my properties. That’s done by creating a custom class inheriting from System.Web.Mvc.DataAnnotationsModelMetadataProvider: 1: public class LocalizedDataAnnotationsModelMetadataProvider : 2: DataAnnotationsModelMetadataProvider 3: { 4: protected override ModelMetadata CreateMetadata( 5: IEnumerable<Attribute> attributes, 6: Type containerType, 7: Func<object> modelAccessor, 8: Type modelType, 9: string propertyName) 10: { 11: var meta = base.CreateMetadata 12: (attributes, containerType, modelAccessor, modelType, propertyName); 13:   14: if (string.IsNullOrEmpty(propertyName)) 15: return meta; 16:   17: if (meta.DisplayName == null) 18: GetLocalizedDisplayName(meta, propertyName); 19:   20: if (string.IsNullOrEmpty(meta.DisplayName)) 21: meta.DisplayName = string.Format("[[{0}]]", propertyName); 22:   23: return meta; 24: } 25:   26: private static void GetLocalizedDisplayName(ModelMetadata meta, string propertyName) 27: { 28: ResourceManager resourceManager = MyResource.ResourceManager; 29: CultureInfo culture = Thread.CurrentThread.CurrentUICulture; 30:   31: meta.DisplayName = resourceManager.GetString(propertyName, culture); 32: } 33: } Line 11 calls the base CreateMetadata method. Line 17 checks whether the metadata DisplayName property has already been populated by a DisplayNameAttribute (or my LocalizedDisplayNameAttribute). If so, it respects that and doesn’t use my custom localized text lookup. The GetLocalizedDisplayName method checks for the property name as a resource file key. If found, it uses the localized text from the resource files. If the key is not found in the resource file, as with my LocalizedDisplayNameAttribute, I return a formatted string containing the property name (e.g. “[[RememberMe]]”) so I can tell by looking at my web pages which resource keys I haven’t defined yet. It’s hooked up with this code in the Application_Start method of Global.asax: ModelMetadataProviders.Current = new LocalizedDataAnnotationsModelMetadataProvider();

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• Mocking the Unmockable: Using Microsoft Moles with Gallio

  - by Thomas Weller

  Usual opensource mocking frameworks (like e.g. Moq or Rhino.Mocks) can mock only interfaces and virtual methods. In contrary to that, Microsoft’s Moles framework can ‘mock’ virtually anything, in that it uses runtime instrumentation to inject callbacks in the method MSIL bodies of the moled methods. Therefore, it is possible to detour any .NET method, including non-virtual/static methods in sealed types. This can be extremely helpful when dealing e.g. with code that calls into the .NET framework, some third-party or legacy stuff etc… Some useful collected resources (links to website, documentation material and some videos) can be found in my toolbox on Delicious under this link: http://delicious.com/thomasweller/toolbox+moles A Gallio extension for Moles Originally, Moles is a part of Microsoft’s Pex framework and thus integrates best with Visual Studio Unit Tests (MSTest). However, the Moles sample download contains some additional assemblies to also support other unit test frameworks. They provide a Moled attribute to ease the usage of mole types with the respective framework (there are extensions for NUnit, xUnit.net and MbUnit v2 included with the samples). As there is no such extension for the Gallio platform, I did the few required lines myself – the resulting Gallio.Moles.dll is included with the sample download. With this little assembly in place, it is possible to use Moles with Gallio like that: [Test, Moled] public void SomeTest() {     ... What you can do with it Moles can be very helpful, if you need to ‘mock’ something other than a virtual or interface-implementing method. This might be the case when dealing with some third-party component, legacy code, or if you want to ‘mock’ the .NET framework itself. Generally, you need to announce each moled type that you want to use in a test with the MoledType attribute on assembly level. For example: [assembly: MoledType(typeof(System.IO.File))] Below are some typical use cases for Moles. For a more detailed overview (incl. naming conventions and an instruction on how to create the required moles assemblies), please refer to the reference material above.  Detouring the .NET framework Imagine that you want to test a method similar to the one below, which internally calls some framework method:   public void ReadFileContent(string fileName) {     this.FileContent = System.IO.File.ReadAllText(fileName); } Using a mole, you would replace the call to the File.ReadAllText(string) method with a runtime delegate like so: [Test, Moled] [Description("This 'mocks' the System.IO.File class with a custom delegate.")] public void ReadFileContentWithMoles() {     // arrange ('mock' the FileSystem with a delegate)     System.IO.Moles.MFile.ReadAllTextString = (fname => fname == FileName ? FileContent : "WrongFileName");       // act     var testTarget = new TestTarget.TestTarget();     testTarget.ReadFileContent(FileName);       // assert     Assert.AreEqual(FileContent, testTarget.FileContent); } Detouring static methods and/or classes A static method like the below… public static string StaticMethod(int x, int y) {     return string.Format("{0}{1}", x, y); } … can be ‘mocked’ with the following: [Test, Moled] public void StaticMethodWithMoles() {     MStaticClass.StaticMethodInt32Int32 = ((x, y) => "uups");       var result = StaticClass.StaticMethod(1, 2);       Assert.AreEqual("uups", result); } Detouring constructors You can do this delegate thing even with a class’ constructor. The syntax for this is not all  too intuitive, because you have to setup the internal state of the mole, but generally it works like a charm. For example, to replace this c’tor… public class ClassWithCtor {     public int Value { get; private set; }       public ClassWithCtor(int someValue)     {         this.Value = someValue;     } } … you would do the following: [Test, Moled] public void ConstructorTestWithMoles() {     MClassWithCtor.ConstructorInt32 =            ((@class, @value) => new MClassWithCtor(@class) {ValueGet = () => 99});       var classWithCtor = new ClassWithCtor(3);       Assert.AreEqual(99, classWithCtor.Value); } Detouring abstract base classes You can also use this approach to ‘mock’ abstract base classes of a class that you call in your test. Assumed that you have something like that: public abstract class AbstractBaseClass {     public virtual string SaySomething()     {         return "Hello from base.";     } }      public class ChildClass : AbstractBaseClass {     public override string SaySomething()     {         return string.Format(             "Hello from child. Base says: '{0}'",             base.SaySomething());     } } Then you would set up the child’s underlying base class like this: [Test, Moled] public void AbstractBaseClassTestWithMoles() {     ChildClass child = new ChildClass();     new MAbstractBaseClass(child)         {                 SaySomething = () => "Leave me alone!"         }         .InstanceBehavior = MoleBehaviors.Fallthrough;       var hello = child.SaySomething();       Assert.AreEqual("Hello from child. Base says: 'Leave me alone!'", hello); } Setting the moles behavior to a value of  MoleBehaviors.Fallthrough causes the ‘original’ method to be called if a respective delegate is not provided explicitly – here it causes the ChildClass’ override of the SaySomething() method to be called. There are some more possible scenarios, where the Moles framework could be of much help (e.g. it’s also possible to detour interface implementations like IEnumerable<T> and such…). One other possibility that comes to my mind (because I’m currently dealing with that), is to replace calls from repository classes to the ADO.NET Entity Framework O/R mapper with delegates to isolate the repository classes from the underlying database, which otherwise would not be possible… Usage Since Moles relies on runtime instrumentation, mole types must be run under the Pex profiler. This only works from inside Visual Studio if you write your tests with MSTest (Visual Studio Unit Test). While other unit test frameworks generally can be used with Moles, they require the respective tests to be run via command line, executed through the moles.runner.exe tool. A typical test execution would be similar to this: moles.runner.exe <mytests.dll> /runner:<myframework.console.exe> /args:/<myargs> So, the moled test can be run through tools like NCover or a scripting tool like MSBuild (which makes them easy to run in a Continuous Integration environment), but they are somewhat unhandy to run in the usual TDD workflow (which I described in some detail here). To make this a bit more fluent, I wrote a ReSharper live template to generate the respective command line for the test (it is also included in the sample download – moled_cmd.xml). - This is just a quick-and-dirty ‘solution’. Maybe it makes sense to write an extra Gallio adapter plugin (similar to the many others that are already provided) and include it with the Gallio download package, if  there’s sufficient demand for it. As of now, the only way to run tests with the Moles framework from within Visual Studio is by using them with MSTest. From the command line, anything with a managed console runner can be used (provided that the appropriate extension is in place)… A typical Gallio/Moles command line (as generated by the mentioned R#-template) looks like that: "%ProgramFiles%\Microsoft Moles\bin\moles.runner.exe" /runner:"%ProgramFiles%\Gallio\bin\Gallio.Echo.exe" "Gallio.Moles.Demo.dll" /args:/r:IsolatedAppDomain /args:/filter:"ExactType:TestFixture and Member:ReadFileContentWithMoles" -- Note: When using the command line with Echo (Gallio’s console runner), be sure to always include the IsolatedAppDomain option, otherwise the tests won’t use the instrumentation callbacks! -- License issues As I already said, the free mocking frameworks can mock only interfaces and virtual methods. if you want to mock other things, you need the Typemock Isolator tool for that, which comes with license costs (Although these ‘costs’ are ridiculously low compared to the value that such a tool can bring to a software project, spending money often is a considerable gateway hurdle in real life...).  The Moles framework also is not totally free, but comes with the same license conditions as the (closely related) Pex framework: It is free for academic/non-commercial use only, to use it in a ‘real’ software project requires an MSDN Subscription (from VS2010pro on). The demo solution The sample solution (VS 2008) can be downloaded from here. It contains the Gallio.Moles.dll which provides the here described Moled attribute, the above mentioned R#-template (moled_cmd.xml) and a test fixture containing the above described use case scenarios. To run it, you need the Gallio framework (download) and Microsoft Moles (download) being installed in the default locations. Happy testing…

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