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• Adding Control to Container Control that is in User Control - How to properly initialize?

  - by DougJones

  Let's say I have a user control MyUserControl, which has a container control (it's a server control, but it could just be a Panel) and a dropdownlist. The dropdownlist is not in the container control initially. In it's code-behind, I am overriding OnInit and creating the user control, which includes populating a dropdownlist and adding that dropdownlist to my container control. I have a public property Year, which is an int. Based on the value of Year, I want to populate the dropdownlist. The problem is that in OnInit, year is always 0. On the page Init, I am setting year, but that doesn't run until AFTER the control's Init runs. If I try to set the value on PreInit on the page, the page hasn't initialized the control and I get invalid null reference when setting a value to the control. My question is: How can I properly initialize the control? How can I set the value on the page, before the control actually gets initialized? If I move the control's code to OnLoad, it'll work until I have to do a postback. In this case I need to, though!

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• User control or custom control for this design?

  - by m0s

  If I want to create a button control like that, is it supposed to be a User Control or a Custom Control? I am not sure maybe something else? Ideally I want to be able style/animate the main button and the inner button separately; also obviously Ill need to process their events separately. These buttons will be created at run-time and Ill need to set the icons dynamically.

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• WebBroswer control - WM6.x - Can it executing an ActiveX control and JSP page

  - by cccedi

  Hi, I am trying to develop an form containing WebBrowser control. I wanted to know if the WebBrowser control is - a. is it capable of executing an ActiveX control (used to take snaps with the integrated camera)? b. is it capable of executing JSP code? Thanks in advance.

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• Setting value in html control in code behind without making server control

  - by Muhammad Akhtar

  Setting value in html control in code behind without making server control <input type="text" name="txt" /> <%--Pleas note I don't want put runat=server here to get the control in code behind--%> <asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1_Click" /> Code behind protected void Page_Load(object sender, EventArgs e) { if (!Page.IsPostBack) { //If I want to initlize some value in input, how can I set here } } protected void Button1_Click(object sender, EventArgs e) { Request["txt"] // Here I am getting the value of input } Thanks

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• asp.net custom control control state

  - by pranay

  what is advantage of using control state instead of view state when i create custom control in asp.net ? so i want to know why to use control state ? can some please provide me good article or descriptive answer for this ?

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• Starting to construct a data access layer. Things to consider?

  - by Phil

  Our organisation uses inline sql. We have been tasked with providing a suitable data access layer and are weighing up the pro's and cons of which way to go... Datasets ADO.net Linq Entity framework Subsonic Other? Some tutorials and articles I have been using for reference: http://www.asp.net/(S(pdfrohu0ajmwt445fanvj2r3))/learn/data-access/tutorial-01-vb.aspx http://www.simple-talk.com/dotnet/.net-framework/designing-a-data-access-layer-in-linq-to-sql/ http://msdn.microsoft.com/en-us/magazine/cc188750.aspx http://msdn.microsoft.com/en-us/library/aa697427(VS.80).aspx http://www.subsonicproject.com/ I'm extremely torn, and finding it very difficult to make a decision on which way to go. Our site is a series of 2 internal portals and a public web site. We are using vs2008 sp1 and framework version 3.5. Please can you give me advise on what factors to consider and any pro's and cons you have faced with your data access layer. Thanks.

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• control state for custom control

  - by pranay

  what is advantage of using control state instead of view state when i create custom control in asp.net ?

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• Using Core Data Concurrently and Reliably

  - by John Topley

  I'm building my first iOS app, which in theory should be pretty straightforward but I'm having difficulty making it sufficiently bulletproof for me to feel confident submitting it to the App Store. Briefly, the main screen has a table view, upon selecting a row it segues to another table view that displays information relevant for the selected row in a master-detail fashion. The underlying data is retrieved as JSON data from a web service once a day and then cached in a Core Data store. The data previous to that day is deleted to stop the SQLite database file from growing indefinitely. All data persistence operations are performed using Core Data, with an NSFetchedResultsController underpinning the detail table view. The problem I am seeing is that if you switch quickly between the master and detail screens several times whilst fresh data is being retrieved, parsed and saved, the app freezes or crashes completely. There seems to be some sort of race condition, maybe due to Core Data importing data in the background whilst the main thread is trying to perform a fetch, but I'm speculating. I've had trouble capturing any meaningful crash information, usually it's a SIGSEGV deep in the Core Data stack. The table below shows the actual order of events that happen when the detail table view controller is loaded: Main Thread Background Thread viewDidLoad Get JSON data (using AFNetworking) Create child NSManagedObjectContext (MOC) Parse JSON data Insert managed objects in child MOC Save child MOC Post import completion notification Receive import completion notification Save parent MOC Perform fetch and reload table view Delete old managed objects in child MOC Save child MOC Post deletion completion notification Receive deletion completion notification Save parent MOC Once the AFNetworking completion block is triggered when the JSON data has arrived, a nested NSManagedObjectContext is created and passed to an "importer" object that parses the JSON data and saves the objects to the Core Data store. The importer executes using the new performBlock method introduced in iOS 5: NSManagedObjectContext *child = [[NSManagedObjectContext alloc] initWithConcurrencyType:NSPrivateQueueConcurrencyType]; [child setParentContext:self.managedObjectContext]; [child performBlock:^{ // Create importer instance, passing it the child MOC... }]; The importer object observes its own MOC's NSManagedObjectContextDidSaveNotification and then posts its own notification which is observed by the detail table view controller. When this notification is posted the table view controller performs a save on its own (parent) MOC. I use the same basic pattern with a "deleter" object for deleting the old data after the new data for the day has been imported. This occurs asynchronously after the new data has been fetched by the fetched results controller and the detail table view has been reloaded. One thing I am not doing is observing any merge notifications or locking any of the managed object contexts or the persistent store coordinator. Is this something I should be doing? I'm a bit unsure how to architect this all correctly so would appreciate any advice.

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• Problem with the way the Ajax Control Toolkit tab control sets the default submit button

  - by Colin

  We have a tab control containing some textboxes for doing a search. When you keypress inside one of the textboxes, the tab control sets the default button to be the button immediately following the tab control. This is fine because that's the search button. The problem occurs after the button is clicked and results returned. Now there is no default button, and keypress does nothing. Any suggestions?

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• Adding a textblock to a custom wpf control (piepiece control from codeplex)

  - by bomortensen

  Hi Stackoverflow! I'm currently building a Surface application where the main navigation is a circular menu. For each menu item I'm using a custom control that I found on codeproject.com: http://www.codeproject.com/KB/WPF/PieChartDataBinding.aspx (PiePiece control) The number of submenu items (which is also piepiece controls) comes from a database and thus dynamically loaded. What I can't figure out is how I add a textblock to this custom control to display the submenu item text. It needs to follow the PiePiece's RotationAngle property to line up correctly. Anyone got a hot-fix for this? I was thinking about adding another dependencyproperty to the piepiece custom control, but that way I can't set the font-family, size etc (can I?) Any input on this is greatly appreciated! Thanks!

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• How To Find the Control or Page a User Control is Embedded In

  - by 5arx

  I've written a web user control which I want to be able to drop into the markup for either aspx pages or other web user controls. I need my user control to be able to easily and efficiently work out if its inside another user control or an aspx page. My initial idea is to do it recursively with checks on the Parent property - continue looking up the nesting hierarchy until I find either a web form or a user control - but I'm not sure this the best way of going about this. Can you suggest an easier way? thanks 5arx

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• Adding to page control collection from inside a user control

  - by Zarigani

  I have an asp.net usercontrol which represents a "popup" dialog. Basically, it's a wrapper for the jQuery UI dialog which can be subclassed to easily make dialogs. As part of this control, I need to inject a div into the page the control is used on, either at the very top or very bottom of the form so that when the popup is instantiated, it's parent is changed to this div. This allows "nested" popups without the child popup being trapped inside the parent popup. The trouble is, I can't find a safe way to inject this div into the page. A usercontrol doesn't have a preinit event, so I can't do it there, and calling Page.Form.Controls.Add(...) in Init, Load or PreRender causes the standard exception "The control collection cannot be modified during DataBind, Init, Load, PreRender or Unload phases." I thought I had found a solution by using... ScriptManager.RegisterClientScriptBlock(Page, Me.GetType, UniqueID + "_Dialog_Div", containerDiv, False) ... which seemed to work well normally, but recently a coworker tried putting an UpdatePanel inside the dialog and now she's getting the error "The script tag registered for type 'ASP.controls_order_viewzips_ascx' and key 'ctl00$ContentBody$OViewZips_Dialog_Div' has invalid characters outside of the script tags: . Only properly formatted script tags can be registered." How are you supposed to add controls to the pages control collection from inside a user control?

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• iPhone App to Remotely Control Windows Media Center

  - by Barry-Jon

  Can anyone recommend an iPhone app, for non-jailbroken devices, that can be used to remotely control Windows (7, if it matters) Media Center from outside the home WiFi network? The objective is to be able to connect to the Media Center box during the day when I am not home. For instance, if I realise that the new series of [insert very trendy new show here] is starting tonight and I hadn’t set up a series link I could fire up the app and set my machine to record it. Solutions could include native iPhone apps, iPhone optimised web apps or regular web apps.

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• Used HDD/ran DiskSmartView/40,000 Power-on-hours?? should i trust it w/ my data, or take it back and bitch?

  - by David Lindsay

  I just bought a used hard drive from a University Surplus Store. Decided to run DiskSmartView to make sure it wasn't ready to fail. 40,000 power-on-hours I don't know if I feel like trusting my data to something that used. I really dont know if thats unreasonably old, but when i compare it to the POH reading i get when testing my other hdds its more than 3x older (my others have 2110 hours, 6150 hours, etc.. It's a Western Digital, so that gives me a little bit of hope(WDC WD4000KD-00NAB0). I could sure use someone else's opinion here. Thanks, DAVE

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• Filtering data in LINQ with the help of where clause

  - by vik20000in

   LINQ has bought with itself a super power of querying Objects, Database, XML, SharePoint and nearly any other data structure. The power of LINQ lies in the fact that it is managed code that lets you write SQL type code to fetch data.  Whenever working with data we always need a way to filter out the data based on different condition. In this post we will look at some of the different ways in which we can filter data in LINQ with the help of where clause. Simple Filter for an array. Let’s say we have an array of number and we want to filter out data based on some condition. Below is an example int[] numbers = { 5, 4, 1, 3, 9, 8, 6, 7, 2, 0 }; var lowNums =                 from num in numbers                 where num < 5                 select num;   Filter based on one of the property in the class. With the help of LINQ we can also filer out data from a list based on value of some property. var soldOutProducts =                 from prod in products                 where prod.UnitsInStock == 0                 select prod; Filter based on Multiple of the property in the class. var expensiveInStockProducts =         from prod in products         where prod.UnitsInStock > 0 && prod.UnitPrice > 3.00M         select prod; Filter based on the index of the Item in the list.In the below example we can see that we are able to filter data based on the index of the item in the list. string[] digits = { "zero", "one", "two", "three", "four", "five", "six"}; var shortDigits = digits.Where((digit, index) => digit.Length < index); There are many other way in which we can filter out data in LINQ. In the above post I have tried and shown few ways using the LINQ. Vikram

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• (Free?) Hosting Control Panels

  - by Alix Axel

  I've installed and used both cPanel and Plesk on my dedicated servers in the past and I truly enjoyed the features and simplicity of cPanel (specially the auto-update feature in WHM), recently (a couple of months ago) I also tried a beta version of the open-source OpenPanel and although it looks really nice I found it kinda limited in terms of features, such as automatic system updates, automatic backups and the ability to add addicional hosts to the MySQL allowed clients list - just to name a few. Besides OpenPanel, I'm aware of Usermin, Webmin, Virtualmin, ISPConfig, VHCS, web-cp and FlexCP - although I've never had the opportunity to try any of them before... Are you familiar and recommend any of these? It's been a while since I managed a dedicated server and I'm wondering what would be a good hosting control panel for me, preferably a free / open-source one that has similar features / usability of cPanel. I appreciate all input, thanks! =)

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• Windows Azure Recipe: Big Data

  - by Clint Edmonson

  As the name implies, what we’re talking about here is the explosion of electronic data that comes from huge volumes of transactions, devices, and sensors being captured by businesses today. This data often comes in unstructured formats and/or too fast for us to effectively process in real time. Collectively, we call these the 4 big data V’s: Volume, Velocity, Variety, and Variability. These qualities make this type of data best managed by NoSQL systems like Hadoop, rather than by conventional Relational Database Management System (RDBMS). We know that there are patterns hidden inside this data that might provide competitive insight into market trends.  The key is knowing when and how to leverage these “No SQL” tools combined with traditional business such as SQL-based relational databases and warehouses and other business intelligence tools. Drivers Petabyte scale data collection and storage Business intelligence and insight Solution The sketch below shows one of many big data solutions using Hadoop’s unique highly scalable storage and parallel processing capabilities combined with Microsoft Office’s Business Intelligence Components to access the data in the cluster. Ingredients Hadoop – this big data industry heavyweight provides both large scale data storage infrastructure and a highly parallelized map-reduce processing engine to crunch through the data efficiently. Here are the key pieces of the environment: Pig - a platform for analyzing large data sets that consists of a high-level language for expressing data analysis programs, coupled with infrastructure for evaluating these programs. Mahout - a machine learning library with algorithms for clustering, classification and batch based collaborative filtering that are implemented on top of Apache Hadoop using the map/reduce paradigm. Hive - data warehouse software built on top of Apache Hadoop that facilitates querying and managing large datasets residing in distributed storage. Directly accessible to Microsoft Office and other consumers via add-ins and the Hive ODBC data driver. Pegasus - a Peta-scale graph mining system that runs in parallel, distributed manner on top of Hadoop and that provides algorithms for important graph mining tasks such as Degree, PageRank, Random Walk with Restart (RWR), Radius, and Connected Components. Sqoop - a tool designed for efficiently transferring bulk data between Apache Hadoop and structured data stores such as relational databases. Flume - a distributed, reliable, and available service for efficiently collecting, aggregating, and moving large log data amounts to HDFS. Database – directly accessible to Hadoop via the Sqoop based Microsoft SQL Server Connector for Apache Hadoop, data can be efficiently transferred to traditional relational data stores for replication, reporting, or other needs. Reporting – provides easily consumable reporting when combined with a database being fed from the Hadoop environment. Training These links point to online Windows Azure training labs where you can learn more about the individual ingredients described above. Hadoop Learning Resources (20+ tutorials and labs) Huge collection of resources for learning about all aspects of Apache Hadoop-based development on Windows Azure and the Hadoop and Windows Azure Ecosystems SQL Azure (7 labs) Microsoft SQL Azure delivers on the Microsoft Data Platform vision of extending the SQL Server capabilities to the cloud as web-based services, enabling you to store structured, semi-structured, and unstructured data. See my Windows Azure Resource Guide for more guidance on how to get started, including links web portals, training kits, samples, and blogs related to Windows Azure.

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• Uploaded Four New ADF Examples

  - by Steve Muench

  I've uploaded four new examples for your learning pleasure:  162. Set Binding to Attr Value from Selected SelectBooleanRadio Button in Data-Driven Button Group 163. Binding SelectBooleanRadio to True/False Value in DB Row 164. Method Action Invoking Managed Bean Method Without Making Bean a DataControl 165. Using a Headless Taskflow to Perform Work in an Autononmous Transaction Enjoy.

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• Groovy Debugging

  - by Vijay Allen Raj

  Groovy Debugging - An Overview:ADF BC developers may express snippets of business logic (like the following) as embedded groovy expressions: default / calculated attribute valuesvalidation rules / conditionserror message tokensLOV input values (VO) This approach has the advantages that: Groovy has a compact, EL-like syntax for expressing simple logicADF has extended this syntax to provide useful built-insembedded Groovy expressions are customizableGroovy debugging support helps improve maintainability of business logic expressed in Groovy.Following is an example how groovy debugging works.Example:This example shows how a script expression validator can be created and the groovy script debugged. It shows Step over, breakpoint functionalities as well as syntax coloring.Let us create a ADFBC application based on Emp and Dept tables, and add a script expression validator based on the script:  if (Sal >= 5000){ //If EmpSal is greater than a property value set on the custom //properties on the root AM //raise a custom exception else raise a custom warning if (Sal >= source.DBTransaction.rootApplicationModule.propertiesMap.salHigh) { adf.error.raise("ExcGreaterThanApplicationLimit"); } else { adf.error.warn("WarnGreaterThan5000"); } } else if (EmpSal <= 1000) { adf.error.raise("ExcTooLow"); }return true;In the Emp.xml Flat editor, place breakpoints at various locations as shown below:Right click the appmodule and click Debug. Enter a value greater than 5000 and click next. You can see the debugging work as shown below:  The code can be also be stepped over and debugged.

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• Easy way of engaging non-programmers (i.e. designers) into using version control?

  - by Kevin

  What are some key ways of getting your team involved in using version control during development, web development or otherwise? I refuse to work without it, which means anyone involved in the project must also use it. It's just good practice. GUIs like Tower have helped, but the concept of it is either met with anger ('not my job!' kinda attitude), timidness, or just straight up not using it (using FTP instead, circumventing version control for say, dev or deployment). Edit: I should have clarified a little that I don't just mean images/PSDs.

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• Should custom data elements be stored as XML or database entries?

  - by meteorainer

  There are a ton of questions like this, but they are mostly very generalized, so I'd like to get some views on my specific usage. General: I'm building a new project on my own in Django. It's focus will be on small businesses. I'd like to make it somewhat customizble for my clients so they can add to their customer/invoice/employee/whatever items. My models would reflect boilerplate items that all ModelX might have. For example: first name last name email address ... Then my user's would be able to add fields for whatever data they might like. I'm still in design phase and am building this myself, so I've got some options. Working on... Right now the 'extra items' models have a FK to the generic model (Customer and CustomerDataPoints for example). All values in the extra data points are stored as char and will be coerced/parced into their actual format at view building. In this build the user could theoretically add whatever values they want, group them in sets and generally access them at will from the views relavent to that model. Pros: Low storage overhead, very extensible, searchable Cons: More sql joins My other option is to use some type of markup, or key-value pairing stored directly onto the boilerplate models. This coul essentially just be any low-overhead method weather XML or literal strings. The view and form generated from the stored data would be taking control of validation and reoganizing on updates. Then it would just dump the data back in as a char/blob/whatever. Something like: <datapoint type='char' value='something' required='true' /> <datapoint type='date' value='01/01/2001' required='false' /> ... Pros: No joins needed, Updates for validation and views are decoupled from data Cons: Much higher storage overhead, limited capacity to search on extra content So my question is: If you didn't live in the contraints impose by your company what method would you use? Why? What benefits or pitfalls do you see down the road for me as a small business trying to help other small businesses? Just to clarify, I am not asking about custom UI elements, those I can handle with forms and template snippets. I'm asking primarily about data storage and retreival of non standardized data relative to a boilerplate model.

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• I want to version control my entire slice

  - by Tom

  I'm renting a slice (i.e., a VPS) from Slicehost. I've a spent a day or two filling up /usr with my favorite packages, /etc with configs and init scripts, and so on. Now I want to: save this whole setup somewhere (e.g., to load onto another machine). see what changes I've made to which files revert changes, tag revisions, and all that other good version control stuff Saving a disk image gives me (1), but not (2) and (3). Using Subversion (svn import / svn://someotherhost) might give me all three, but I expect problems if I actually try to check a project out into / and maintain .svn directories in root-owned areas. And to load my setup onto a fresh slice, I'd need to install an svn client on it first. Is there a good way to do what I want to do?

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• Need Boxee/Vista remote control recommendations

  - by gurun8

  I have an Acer Aspire X1200 (specs link below) desktop computer that I've installed Boxee on and it works great. And it looks like it's going to be a perfect computer for a media player. It's small with lots of hard drive space and even has a HDMI output on it. http://support.acer.com/acerpanam/desktop/0000/Acer/AspireX1200/AspireX1200sp2.shtml I also have a Harmony® 880 Advanced Universal Remote (specs link below) that I'd like to use with the Acer computer. www.logitech.com/en-us/440/372 My thought is that I need to get a USB remote control adapter, right? So I did a quick Google search and found products from $5 to hundreds of $$$. Does anyone have recommendations? Things you like/dislike about certain remotes? This Acer is running Vista and has a AMD LIVE!: Athlon X2 dual-core processor. 64 bit some times makes it a little more difficult. Thanks for the help.

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• web based source control management software [closed]

  - by tom smith

  hi. not sure if this is the right place, but hopefully someone might have thoughts on a solution/vendor. Starting to spec out a project that will require multiple (50-100) developers to be able to manipulate source files/scripts for a large scale project. The idea is to be able to have each app go through a dev/review/test process, where the users can select (or be assigned) the role they're going to have for the given app. I'm looking for web-based, version control, issue tracking, user roles/access, workflow functionality, etc... Ideally, the process will also allow for the reviewed/valid app to then be exported to a separate system for testing on the test server/environment. This can be hosted on our servers, or we can do the colo process. I've checked out Alassian/Collabnet, but any thoughts you can provide would me appreciated as well. thanks

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• Remote Control Home PC from Corporate Work PC

  - by muncherelli

  Here is my situation: I am currently on a Windows XP workstation at work. I have an android tablet that I use to splashtop into my home PC. I would like to be able to use my work keyboard and mouse to control my home PC while I am splashtop'd into it using my tablet. My work PC is on a corporate LAN, and not on the same network as my tablet. The company I work for provides wifi for personal devices, but they are not accessable to the internal network. I thought about going the Synergy route, however that would require my home PC to be able to connect to my work PC which isn't really possible. The opposite would work though, if I could reverse connect the server to the client, but the Synergy software doesn't really support that. I do have a couple linux boxes running at home, so I can ssh into my home network and tunnel ports via SSH if needed. With what I have, how can I accomplish seamless keyboard and mouse sharing between my work PC and either my home PC or my android tablet?

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