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  • How to call a wpf singleton service within a wpf singleton service without hanging?

    - by Michael Hedgpeth
    I have two services, one that calls another. Both are marked as singletons as follows: [ServiceBehavior(InstanceContextMode = InstanceContextMode.Single, ConcurrencyMode = ConcurrencyMode.Multiple)] public class Service : IService And I set these up with a ServiceHost as follows: ServiceHost serviceHost = new ServiceHost(singletonElement); serviceHost.Open(); When the parent service tries to call the child service on the same machine, the parent service hangs, waiting for the child service. I'm already considering moving away from the singleton model, but is there anything wrong with my approach? Is there an explanation for this behavior and a way out of it?

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  • Silverlight file download for COM Interop

    - by rip
    Is the following possible in Silverlight when a button is clicked? An Excel template is downloaded from a remote server and saved to the local machine An instance of the template is then opened on the client A macro is then executed within the new Excel document I can do everything apart from saving the template to the local machine. I can save this in isolated storage but then I don’t know where this is when trying to open it from the Excel COM interop code. Has anyone any ideas or is this not possible?

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  • Does this MSDN article violate MVVM?

    - by rasx
    This may be old news but back in March 2009, this article, “Model-View-ViewModel In Silverlight 2 Apps,” has a code sample that includes DataServiceEntityBase: // COPIED FROM SILVERLIGHTCONTRIB Project for simplicity /// <summary> /// Base class for DataService Data Contract classes to implement /// base functionality that is needed like INotifyPropertyChanged. /// Add the base class in the partial class to add the implementation. /// </summary> public abstract class DataServiceEntityBase : INotifyPropertyChanged { /// <summary> /// The handler for the registrants of the interface's event /// </summary> PropertyChangedEventHandler _propertyChangedHandler; /// <summary> /// Allow inheritors to fire the event more simply. /// </summary> /// <param name="propertyName"></param> protected void FirePropertyChanged(string propertyName) { if (_propertyChangedHandler != null) { _propertyChangedHandler(this, new PropertyChangedEventArgs(propertyName)); } } #region INotifyPropertyChanged Members /// <summary> /// The interface used to notify changes on the entity. /// </summary> event PropertyChangedEventHandler INotifyPropertyChanged.PropertyChanged { add { _propertyChangedHandler += value; } remove { _propertyChangedHandler -= value; } } #endregion What this class implies is that the developer intends to bind visuals directly to data (yes, a ViewModel is used but it defines an ObservableCollection of data objects). Is this design diverging too far from the guidance of MVVM? Now I can see some of the reasons Why would we go this way: what we can do with DataServiceEntityBase is this sort of thing (which is intimate with the Entity Framework): // Partial Method to support the INotifyPropertyChanged interface public partial class Game : DataServiceEntityBase { #region Partial Method INotifyPropertyChanged Implementation // Override the Changed partial methods to implement the // INotifyPropertyChanged interface // This helps with the Model implementation to be a mostly // DataBound implementation partial void OnDeveloperChanged() { base.FirePropertyChanged("Developer"); } partial void OnGenreChanged() { base.FirePropertyChanged("Genre"); } partial void OnListPriceChanged() { base.FirePropertyChanged("ListPrice"); } partial void OnListPriceCurrencyChanged() { base.FirePropertyChanged("ListPriceCurrency"); } partial void OnPlayerInfoChanged() { base.FirePropertyChanged("PlayerInfo"); } partial void OnProductDescriptionChanged() { base.FirePropertyChanged("ProductDescription"); } partial void OnProductIDChanged() { base.FirePropertyChanged("ProductID"); } partial void OnProductImageUrlChanged() { base.FirePropertyChanged("ProductImageUrl"); } partial void OnProductNameChanged() { base.FirePropertyChanged("ProductName"); } partial void OnProductTypeIDChanged() { base.FirePropertyChanged("ProductTypeID"); } partial void OnPublisherChanged() { base.FirePropertyChanged("Publisher"); } partial void OnRatingChanged() { base.FirePropertyChanged("Rating"); } partial void OnRatingUrlChanged() { base.FirePropertyChanged("RatingUrl"); } partial void OnReleaseDateChanged() { base.FirePropertyChanged("ReleaseDate"); } partial void OnSystemNameChanged() { base.FirePropertyChanged("SystemName"); } #endregion } Of course MSDN code can seen as “toy code” for educational purposes but is anyone doing anything like this in the real world of Silverlight development?

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  • Problem starting up mySQL

    - by user313623
    I just downloaded PHP and I tried running mySQL with the command: C:\Program Files\EasyPHP-5.3.2i\mySQL\bin\mysql.exe And I got the error: ERROR 1045 (28000): Acess denied for user 'ODBC'@localhost' (using password: YES) I found a solution online with linux, but I'm running vista on this machine and have no clue what all of that meant. Please help, I'm tired of using the school's terminals.

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  • What is the best way to cofigure a sql server for 50 developers?

    - by Lakhlani Prashant
    Hi, If I am running an organization that has 50 .net developers and all are using sql server, what is the best way to make single sql server available to them? Here is some of the concerns that I want to be careful about Should I configure database users per project or per user? or both? Should I provide single sql server instance? There are some more concerns but I think getting answer of these two will be a good starting point.

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  • How to access web server of any machine of my network from the outside

    - by Luc
    Hello, I have an ip like username.dyndns.org, this is the external IP of my router. On my lan, I have several machine (m1, m2, ...) , each running a dedicated web server. Is it possible to reach each machine from the outside with something like: http://m1.username.dyndns.org http://m2.username.dyndns.org ? Do you know what needs to be configured in my router for NAT ? Also, is there a special directive in Apache to do so ? Thanks a lot, Regards, Luc

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  • Validating method arguments with Data Annotation attributes

    - by schemer
    The "Silverlight Business Application" template bundled with VS2010 / Silverlight 4 uses DataAnnotations on method arguments in its domain service class, which are invoked automagically: public CreateUserStatus CreateUser(RegistrationData user, [Required(ErrorMessageResourceName = "ValidationErrorRequiredField", ErrorMessageResourceType = typeof(ValidationErrorResources))] [RegularExpression("^.*[^a-zA-Z0-9].*$", ErrorMessageResourceName = "ValidationErrorBadPasswordStrength", ErrorMessageResourceType = typeof(ValidationErrorResources))] [StringLength(50, MinimumLength = 7, ErrorMessageResourceName = "ValidationErrorBadPasswordLength", ErrorMessageResourceType = typeof(ValidationErrorResources))] string password) { /* do something */ } If I need to implement this in my POCO class methods, how do I get the framework to invoke the validations OR how do I invoke the validation on all the arguments imperatively (using Validator or otherwise?).

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  • Getting Http 403.14 error

    - by alice7
    Hi Guys, I have a MVC project and trying to host my web site using IIS 7.0 on my local desktop. My desktop has Vista x64 bit machine. I m getting 403.14 error. I have already tried the microsoft suggeston, but that doesn't help me. Does anyone know any other solution? Thnx

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  • How to get IzPack tocheck for an existing version of the software?

    - by bguiz
    Hi, I have an application for which we use IzPack to create the installer. The installer is working fine in its current state, however, I need to add functionality that enables it to check whether an existing version of the software has been installed. I understand IzPack supports this out of the box using its CheckedHelloPanel, unfortunately that only works for Windows, as it appears to depend on the windows registry. Is there a way to configure IzPack such that it is able to detect existing installations? I need to be able to detect whether there is one and merely display a message notifying the user... Bonus points for how to give the user the option to trigger the uninstaller of the existing installation. Assume that the software will only be installed using the new installer IzPack only: please do not suggest alternatives, as we cannot change that now If you suggest using <validator>, please include a code sample of the validator class, because I have considered this, but don't know where to start

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  • Using SQLLite transactions I/O Error

    - by james.ingham
    I currently have a client / server setup where the client sends data to the server and then the server saves the data to a SQLite database file. To do this I am using transactions which works fine in windows 7 when I run around 30 clients (each client sending data back between 5 - 30 seconds). When using the same software in Windows XP, I can get/set data multiple times with no problems until I run around 20 clients I start to get Windows Delayed wrote failed errors: This fires an exception on the server: I'm assuming this is either something to do with XP or a hardware issue on the machine i'm running XP. Does anyone have any advice to avoid this? Or if I should just catch the exception and retry saving the data? Thanks

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  • Trouble Installing the new Android SDK

    - by Dan Monego
    I've installed the newest Android SDK using eclipse's software updates feature to hit the resource at https://dl-ssl.google.com/android/eclipse/. After installing it, it seems like the SDK is integrated into Eclipse, but when I try to create a new project with a single blank activity in it, I get the following error: [2009-06-06 11:41:24 - TestProject] no classfiles specified [2009-06-06 11:41:24 - TestProject] Conversion to Dalvik format failed with error 1 This is using eclipse version 3.4.2 running on top of Mac OS 10.5.7 on a 32 bit processor. Is this a misconfiguration on my part? Have I missed a part of the installation?

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  • subclassing and data contracts

    - by Sergio Romero
    I'm playing with the following code: [ServiceContract] public interface IUserAccountService { [OperationContract] UserAccountResponse CreateNewUserAccount(UserAccountRequest userAccountRequest); } public abstract class BaseResponse { public bool Success { get; set; } public string Message { get; set; } } public class UserAccountResponse : BaseResponse { public int NewUserId { get; set; } } My questions are: Do I need to add the DataContract attribute to both the abstract class and the subclass? If the abstract class does not need the DataContract attribute, can I add the DataMember attribure to its properties?

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  • How does WAS/IIS manage ServiceHost instances?

    - by foosnazzy
    It appears that WAS will call ServiceHostFactory.CreateHost() once per each service implementation. How does WAS manage the lifetime of the ServiceHost/ServiceHostFactory? We have a custom factory/host that is occasionally being re-initialized. I'm wondering if WAS is recycling itself or it has some other reason to re-create the ServiceHostFactory/ServiceHost. I'm guessing the ServiceHostFactory gets fired up for the AppDomain and is a singleton, can someone confirm?

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  • Entity Framework connection metadata extraction

    - by James
    Hi, I am using the EntityFramework POCO adapter and since there are limitations to what microsoft gives access to with regards to the meta data, i am manually extracting the information i need out of the xml. The only problem is i want to get the ssdl, msl, csdl file names to load without having to directly check for the connection string node in app.config. In short where in the ObjectContext/EntityConnection can i get access to these file names? Worst case scenario i need to get the connection name from the EntityConnection object then load this from app.config and parse the string itself and extract the filenames myself. (But i obviously don't want to do that). Thanks

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  • Problem mapping HttpHandler --> HTTP Error 404 Not Found

    - by JohnIdol
    I am having problems trying to map an HttpHandler in the web.config. This is the relevant config bit: <httpHandlers> <add verb="*" path="*.hndlr" type="MyAssembly.MyHandler, MyAssembly" validate="false" /> </httpHandlers> When I navigate to http://localhost/myApp/whatever.hndlr I am getting a server error 404 (not found). It's the 1st time I am hooking up an HttpHandler so I might be missing something - any help appreciated! UPDATE: I managed to get it working using both answers so far - who's able to exaplin why it works gets the answer marked! This is my config (won't work if Don't have both - I am running IIS7 in classic mode) System.web: <httpHandlers> <add verb="*" path="*MyHandler.hndlr" type="MyAssembly.MyAssemblyHandler, MyAssembly" validate="false"/> </httpHandlers> System.webserver: <handlers> <add name="MyHandler" verb="*" path="*MyHandler.hndlr" type="MyAssembly.MyAssemblyHandler, MyAssembly" validate="false"/> </handlers>

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  • Getting config element from ConfigurationElementCollection

    - by Martin
    I have (hopefully) setup ConfigurationElementCollection of my own design with emails as keys. Now what? Hard to find actually on the web. How do I: iterate through it? See if a specific element exists? get a specific element? ...given: YourConfigElement config = ConfigurationManager.GetSection("YourSectionName") as YourConfigElement ; Partial answer Does this work? no, sadly. foreach (X x in config.XCollection.AsQueryable()) ...

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  • What's in an Eclipse .classpath/.project file?

    - by totalEclipse
    We recently had an issue with an Eclipse project for one of our team members. Tomcat was not deploying JARs of the application. We eventually noticed the .classpath Eclipse file was not the same as for the team members where the project was OK. We replaced the .classpath file with one from a project that was OK and the Tomcat deploy was complete. Just out of curiosity and to know at what to look in the future if something is wrong, what is inside the .classpath and .project files. What can I add in there, what does it all mean?

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  • Web Service URL change is not recognized

    - by ila
    I deployed in a production environment a .net solution that consumes a web service added as "Service reference" in visual studio. Today the endpoint URL has changed, and I modified that URL in web.config. But when I run the solution I get the error: System.ServiceModel.FaultException: Server did not recognize the value of HTTP Header SOAPAction: http://93.62.150.200/LogEvent. Now that sound strange to me. As you can see, the IP is 93.62.... but the new value is different. The web.config entry (with the new value or the URL) is: <client> <endpoint address="http://213.92.50.215/sawfc/WS_SAWFC_Int.asmx" binding="basicHttpBinding" bindingConfiguration="wsSAWFCInterfaceSoap" contract="it.datasphere.ws.wsSAWFCInterfaceSoap" name="wsSAWFCInterfaceSoap" /> </client> I cannot reach the new web service from dev environment, so I cannot modify the Service reference there. Any idea? Thanks a lot!

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  • Run an ASP.NET website in a subfolder

    - by Bernhard Hofmann
    Is there a way of running an ASP.NET website in a subfolder of the website? As an example, say I wanted to run the screwturn wiki (http://www.screwturn.eu/) in a folder called "wiki" on my website, can I alter the web.config of the screwturn website to tell it that it is running in the "wiki" folder? (like saying that "~/" = "/wiki/") The wiki would then find its assemblies that are in "~/bin" in "/wiki/bin" and the same for all other folders below the new root.

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  • RIA Services for transmitting non DB object-graph

    - by Mike Gates
    I have been getting into RIA services because I thought it would simplify dealing with the services layer of web applications I wish to build. I see lots of examples out there showing how to create DomainService classes which expose and consume entities that have some kind of relational database backing, and therefore have foreign-key relationships. However, I would like to know how to expose and consume normal object graphs...objects that contain references to eachother but don't have foreign keys. For example, say I want a service operation called "GetFolderInformation(string pathToFolder)". I want this to return a custom object called "FolderInformation" structured with: - string Name - IEnumerable<FileInformation> Files I cannot get this to work because it seems that RIA wants to deal with entities that have foreign key relationships. Why? Why can't the serializer just see my object references and recreate that in the proxy on the other side? Data exists behind service layers that doesn't necessarily have foreign key relationships...like folder/file for example. EDIT: I realized I hadn't asked my question! My question is, is there a way to do what I am trying to do?

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  • Loading and storing encryption keys from a config source

    - by Hassan Syed
    I am writing an application which has an authenticity mechanism, using HMAC-sha1, plus a CBC-blowfish pass over the data for good measure. This requires 2 keys and one ivec. I have looked at Crypto++ but the documentation is very poor (for example the HMAC documentation). So I am going oldschool and use Openssl. Whats the best way to generate and load these keys using library functions and tools ? I don't require a secure-socket therefore a x.509 certificate probably does not make sense, unless, of-course, I am missing something. So, do I need to write my own config file, or is there any infrastructure in openssl for this ? If so, could you direct me to some documentation or examples for this.

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  • Accessing protected REST endpoint with JQuery

    - by Andy
    I have a site where members login to their account (FormsAuth). I would like to set up a RESTful service that I can access using jQuery. I would like to protect these services using the same FormsAuth. How would a third-party site be able to access these services? They would need to pass in the Principal/Identity to the service, right? I've only seen examples of Basic Authentication (which Twitter uses and jQuery supports). I'm very new to WCT/REST, so not sure how this should be done.

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