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• Executing NUnit Tests using the Visual Studio 2012 Test Runner

  - by David Paquette

  At a recent Visual Studio 2012 event at the Calgary .NET User Group, I was told that I could run my NUnit tests directly in the Visual Studio 2012 without any special plugins.  Naturally, I was very excited and I immediately tried running my NUnit tests. I was somewhat disappointed to see that the Test Runner did not discover any of my NUnit tests.  Apparently, you do still need to install an extension that supports NUnit.  Microsoft has completely re-written the Test Runner in Visual Studio 2012 and opened it up for anyone to write Test Adapters for any unit test framework (not just MSTest).  Once the correct test adapters are installed, everything works great.  Luckily, there are a good number of adapters already written. Here are some Test Adapters that you might find useful: NUnit Test Adapter – This one is still in beta, but tit does work with the official Visual Studio 2012 release xUnit.net Test Adapter Silverlight Unit Test Adapter Chutzpah Test Adapter Overall, I still prefer the unit test runner in ReSharper, but this is a great new feature for those who might not have a ReSharper license.

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• How do client-server cooperation based games like Diablo 3 work?

  - by edgar

  Diablo 3 cooperates with Blizzard servers even during single player games. In fact, Blizzard has had problems with the games "melting their servers." I would like to ask: How do the client and the server communicate? What details does the client leave to the server, and vice versa? What details are redundant - both the client and the server know - and how often do they disagree? The previous paragraph contains the important questions, but I have a few more that I must explain my motivation towards. I am interested in the programming of botting. Ethical botting - I don't plan on actually abusing the automation to run 24/7. I just find it to be a great programming challenge to glean information from a game, and then make decisions from that information. I am stuck in the starting gate. The unofficial questions from this post would be: How can I make a bot (language, tools, libraries)? Can I get information through the communication between client and server, rather than the brute force pixel detection easily used in more static games? There probably is a trust issue, and to that all I can say is that I promise not to abuse the answers. But please feel free to answer any of the questions you feel comfortable with. Thank you!

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• Deployment Error: Silverlight 4.0 w/WCF RIA Services in ASP.NET MVC 2 App

  - by Dennis Ward

  I've got an MVC 2 App with an RIA Services link to a Silverlight Application. On my local machine, all is well, but when I deploy to Discount ASP servers, neither the MVC controller nor the WCF RIA services called from silverlight function: A silverlight datagrid gets a load error: System.ServiceModel.DomainServices.Client.DomainOperationException: Load operation failed for query... The remote server returned an error NotFound. In the MVC page where I had a simple table that worked prior to adding an EF model and DomainDataSource, I now get the error: Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information. This is very similar to an issue I had before, but after upgrading from the betas of WCF/Silverlight 4, but the fix I had added there doesn't seem to work any longer. The link for that issue is: SL4/MVC2/WCF RIA Services = Load Error I'm really struggling with deploying, and could use some help if anybody can shed any light on this. Thanks! Dennis

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• WCF, Timer Jobs, Web Service which is better ???

  - by kannan.ambadi

  I am working with a Web application, based on Asp.Net 3.5 and WSS 3.0 platform. Recenlty i've got a task as follows. Import bank statement using FTX - Desktop application and parse those statements into database in every 24 hours ie. i need to download bank statement with the help of a desktop application(which i can call by batch file). Then i have to go through each statement(text file) and convert those data into our database for future reference. As far as i know, .Net provides the following options to implement such a functionality. SharePoint Timer Jobs Web Services WCF Windows Services I would like to go for SharePoint Timer Jobs, but there are some plans to move whole application to Asp.net platform. I am interested with WCF since i haven't much experience with WCF applications, but not in a position to take final decision :) Which is the most suitable way for this kind of task? Please suggest.

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• why is there no interface file with silverlight enabled wcf services

  - by Ralph Shillington

  Using Visual Studio 2010 when creating a wcf service the template creates a class file, svc endpoint and an interface file. Why is it that when adding a silverlight-enabled wcf service they don't follow this pattern. As discussed here this seems like a bad idea. After adding the silverlight-enabled service, should one go back and incorporate the interface as discussed in the referenced article. If so, then would it not be as simple to start with a simple WCF service, bypassing the whole "silverlight-enabled" bits altogether.

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• Arguments of using WCF/OData as access layer instead of EF/L2S/nHibernate directly

  - by Carl Hörberg

  We develop mostly low traffic but highly specialized web applications. Normally we use L2S, EF or nHibernate as access layer and then throws Asp.Net MVC to it and in which for normal crud operations we query the ISession/DataContext directly but for more advanced functions/side effects we put it in a some kind of service layer. Now, i was think about publishing the data through OData (WCF Data Service) and query that from the controllers (or even from jQuery when the a good template engine shows up) and publish the service operations through a WCF service (or as custom methods on the WCF Data Service?). What advantages/disadvantages does this architecture poses? Do I gain something except higher complexity and latency? Better separations of concerns (or is it just a illusion)?

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• Factories, or Dependency Injection for object instantiation in WCF, when coding against an interface

  - by Saajid Ismail

  Hi I am writing a client/server application, where the client is a Windows Forms app, and the server is a WCF service hosted in a Windows Service. Note that I control both sides of the application. I am trying to implement the practice of coding against an interface: i.e. I have a Shared assembly which is referenced by the client application. This project contains my WCF ServiceContracts and interfaces which will be exposed to clients. I am trying to only expose interfaces to the clients, so that they are only dependant on a contract, not any specific implementation. One of the reasons for doing this is so that I can have my service implementation, and domain change at any time without having to recompile and redeploy the clients. The interfaces/contracts will in this case not change. I only need to recompile and redeploy my WCF service. The design issue I am facing now, is: on the client, how do I create new instances of objects, e.g. ICustomer, if the client doesn't know about the Customer concrete implementation? I need to create a new customer to be saved to the DB. Do I use dependency injection, or a Factory class to instantiate new objects, or should I just allow the client to create new instances of concrete implementations? I am not doing TDD, and I will typically only have one implementation of ICustomer or any other exposed interface.

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• WCF VS. Sockets

  - by kite

  Hello, I would like to know which of WCF or .NET Sockets is the more efficient and the more recommended in a game developpment scenario. Here are the different parts of the game : -a client/server communication to play on the internet -peer to peer on local network. I would like to know which technology you would use on these parts (wcf on both, socket on both, wcf on one and socket on the other...) and why, if possible. The game involved doesn't require a high communication frequency (3-4 per second is enough). Thanks, KiTe

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• silverlight with WCF(get data through collections)

  - by Piyush

  in my silverlight page I am fetching the data through WCF WCF is returning an BusinessEntityCollection that is the collection of rows SqlParameter[] sqlParameter = new SqlParameter[]{new SqlParameter("@recordType",recordType)}; MenuEntity menuEntity; MenuEntityCollection menuEntityCollection = new MenuEntityCollection(); using (SqlDataReader sqlDataReader = SqlHelper.ExecuteReader(_ConnectionString,CommandType.StoredProcedure, StoredProcedures.GetMenus, sqlParameter)) { if (sqlDataReader.Read()) { menuEntity = new MenuEntity(); DataAccessHelper.GetEntity(sqlDataReader, menuEntity); menuEntityCollection.Add(menuEntity); } } return menuEntityCollection; -- in silverlight page when I am calling WCF there I am getting an error MenuEntity menuList = new MenuEntity(); menuList = e.Result; <-----error line error: Cannot implicitly convert type 'System.Collections.ObjectModel.ObservableCollection' to 'FastTrackSLUI.AdminServiceReference.MenuEntity'

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• WCF(HTTPS,UserName) calling by SilverLight

  - by Andrew Kalashnikov

  Hello colleagues. I've created wcf service with transport security over HTTPS. Also I use UserName authentication as described at http://msdn.microsoft.com/en-us/library/cc949025.aspx, so I can use my Membership,RoleProvider. When I work with this service with ASP.NET all is OK var client = new RegistratorClient(); client.ClientCredentials.UserName.UserName = ConfigurationManager.AppSettings["registratorLogin"]; client.ClientCredentials.UserName.Password = ConfigurationManager.AppSettings["registratorPassword"]; But at my SilverLight appliation I can't do the same. When I try setup credntials and call wcf I get standard browser window with username and password. When I insert it SL application works well, but this message is so annoyed. I can't use clientCredentialType="Basic" at my SL config. What should I do for silence calling my WCF. Big thanks

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• How can I use Moose with Test::Class?

  - by rassie

  I'm currently refactoring a test suite built up by a colleague and would like to use Test::Class[::Most] while doing so. As I started I figured out I could really use a couple of Moose roles to decouple code a little bit. However, it seems it's not quite possible -- I'm getting error messages like this one: Prototype mismatch: sub My::Test::Class::Base::blessed: none vs ($) at /usr/lib/perl5/vendor_perl/5.8.8/Sub/Exporter.pm line 896 So the question is: can I use Moose together with Test::Class and if so, how? PS: The code goes like this: package My::Test::Class::Base; use Moose; use Test::Class::Most; with 'My::Cool::Role'; has attr => ( ... );

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• Creating WCF DataContracts dynamically from code

  - by Fredrik Tonn

  Given the fact that I have a fully dynamic object model, that is, I have no concrete classes defined anywhere in code, but I still want to be able to create WCF DataContracts for them so I can use them in operations. How can I achieve this? My concrete class "Entity" implements ICustomTypeDescriptor which is used to present the various properties to the outside world, but my expeimentation with WCF suggests that WCF does not care about ICustomTypeDescriptor. Is this correct or have I missed something? Is this possible? It cannot be so that the only way to create a DataContract is to actually have a concrete harcoded class, can it?

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• How to set WCF threads to schedual differently

  - by Gilad

  Hi, I'm running a winservice that has 2 main objectives. Execute/Handle exposed webmethods. Run Inner processes that consume allot of CPU. The problem is that when I execute many inner processes |(as tasks) that are queued to the threadpool or taskpool, the execution of the webmethods takes much more time as WCF also queues its executions to the same threadpool. This even happens when setting the inner processes task priority to lowest and setting the webmethods thread priority to heights. I hoped that Framework 4.0 would improve this, and they have, but still it takes quite allot of time for the system to handle the WCF queued tasks if the CPU is handling other inner tasks. Is it possible to change the Threadpool that WCF uses to a different one? Is it possible to manually change the task queue (global task queue, local task queue). Is it possible to manually handle 2 task queues that behave differently ? Any help in the subject would be appropriated. Gilad.

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• WCF host in windows service: cannot get wsdl

  - by michele

  Hi guys! i've a windows service that hosts a WCF service with basicHTTPBinding. In test everything goes right, when i deploy the win service on a Window Server 2003, service hosts correctly wcf, I print out endpoints in tracing, they're correct, but when i ask for wsdl using the address that service exposed (i.e. http://mybaseaddress/?wsdl) i get a dns error, i cannot get the page! Where i fail? I miss something? If i host the wcf with a console app, using the same config file, i can get the wsdl without problems! Thank you in advance Michele

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• WCF DataContracts and underlying data structures

  - by Xerx

  I am wondering what makes sense in relation to what objects to expose through a WCF service - should I add WCF Serialization specifications to my business entities or should I implement a converter that maps my business entities to the DataContracts that I want to expose through my WCF service? Right now I have entities on different levels: DataAccess, Business and Contract. I have converters in place that can map entities from DataAccess to Business and from Business to Contract and vice versa. Implementing and Maintaining those is time consuming and pretty tedious. What are best practices in relation to this? If I were using an OR/M such as NHibernate or Entity Framework should I be exposing the entities from the ORM directly or should I abstract them the same way I am doing now? Thanks in advance.

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• How can I use Moose with Test::Class?

  - by rassie

  I'm currently refactoring a test suite built up by a colleague and would like to use Test::Class[::Most] while doing so. As I started I figured out I could really use a couple of Moose roles to decouple code a little bit. However, it seems it's not quite possible -- I'm getting error messages like this one: Prototype mismatch: sub My::Test::Class::Base::blessed: none vs ($) at /usr/lib/perl5/vendor_perl/5.8.8/Sub/Exporter.pm line 896 So the question is: can I use Moose together with Test::Class and if so, how? PS: The code goes like this: package My::Test::Class::Base; use Moose; use Test::Class::Most; with 'My::Cool::Role'; has attr => ( ... );

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• WCF Web Service chnage wsdl name and targetNamespace

  - by Graham

  All, I'm a little new to WCF over IIS but have done some ASMX web services before. My WCF service is up and running but the helper page generated by the web service for me has the default names, i.e. the page that says: You have created a service. To test this service, you will need to create a client and use it to call the service. You can do this using the svcutil.exe tool from the command line with the following syntax: svcutil.exe http://localhost:53456/ServicesHost.svc?wsdl In a standard ASMX site I would use method/class attributes to give the web service a name and a namespace. When I click on the link the WSDL has: <wsdl:definitions name="SearchServices" targetNamespace="http://tempuri.org/" i.e. not the WCF Service Contract Name and Namespace from my Interface. I assume the MEX is using some kind of default settings but I'd like to change them to be the correct names. How can I do this?

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• WCF RIA Services and RFCs

  - by Kottan

  I want (have) to write a Silverlight and (or) ASP.NET based webapplication with SAP in the backend (in other words, the datasource is no classical database) . The usage of Silverlight and ASP.NET is a precondition. Is it possible to use the WCF RIA Services (and Silverlight) where the data-source are RFCs from SAP ? Makes this sense ? If yes, how the pattern/architecture could be shortly described ? Or should I take other architectures into considerations (usage of plan WCF services, WCF data services,...) ?

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• WCF without NET 3.0

  - by Murat

  Hello there, Does anyone tell me if it's possible to use WCF without .NET 3.0? Our company develops a 3-tier client-server end-user solution based on .Remoting. One of the limitation of our project is using .NET 2.0. Unfortunately .NET 3.0 framework is too large to be included in our installation package and I don't know if MS license allows this. But WCF might helps us to drastically reduce our efforts in some tasks. Does anyone have a chance to use WCF from Mono? Thanks in advance -- Murat

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• Usage of WCF RIA Services, where the datasource isn't a classical (relational) database

  - by Kottan

  I want (have) to write a Silverlight and (or) ASP.NET based webapplication with SAP in the backend (in other words, the datasource is no classical database) . The usage of Silverlight and ASP.NET is a precondition. Is it possible to use the WCF RIA Services (and Silverlight) where the data-source are RFCs from SAP ? Makes this sense ? If yes, how the pattern/architecture could be shortly described ? Or should I take other architectures into considerations (usage of plain WCF services, WCF data services,...) ?

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• TimeoutException when WCF Host and Client are in the same process

  - by Pharao2k

  I've ran into a really weird problem. I am building a heavily distributed application where each app instance can either be a Host and/or Client to a WCF-Service (very p2p-like). Everything works fine, as long as the Client and the targeted Host (By which I mean the app, not the Host, since currently everything runs on a single computer (so no Firewall problems etc.)) are NOT the same. IF they are the same, then the app hangs for exactly 1 Minute and then throws a TimeoutException. WCF-Logging did not produce anything helpful. Here is a small app which demonstrates the Problem: public partial class MainWindow : Window { public MainWindow() { InitializeComponent(); } private void button1_Click(object sender, RoutedEventArgs e) { var binding = new NetTcpBinding(); var baseAddress = new Uri(@"net.tcp://localhost:4000/Test"); ServiceHost host = new ServiceHost(typeof(TestService), baseAddress); host.AddServiceEndpoint(typeof(ITestService), binding, baseAddress); var debug = host.Description.Behaviors.Find<ServiceDebugBehavior>(); if (debug == null) host.Description.Behaviors.Add(new ServiceDebugBehavior { IncludeExceptionDetailInFaults = true }); else debug.IncludeExceptionDetailInFaults = true; host.Open(); var clientBinding = new NetTcpBinding(); var testProxy = new TestProxy(clientBinding, new EndpointAddress(baseAddress)); testProxy.Test(); } } [ServiceContract] public interface ITestService { [OperationContract] void Test(); } public class TestService : ITestService { public void Test() { MessageBox.Show("foo"); } } public class TestProxy : ClientBase<ITestService>, ITestService { public TestProxy(NetTcpBinding binding, EndpointAddress remoteAddress) : base(binding, remoteAddress) { } public void Test() { Channel.Test(); } } What am I doing wrong? Regards, Pharao2k

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• Self host WCF (Windows Communication Foundation) Ajax services

  - by Wayne Lo

  I am having trouble to understand how to expose the WCF services through Javascript. Here are what I found after days of research: Exposing WCF services through Javascript but not self host: http://msdn.microsoft.com/en-us/library/bb472488.aspx In this example, it requires the creation of a .svc file <%@ServiceHost language="c#" Debug="true" Service="Microsoft.Samples.XmlAjaxService.CalculatorService" Factory="System.ServiceModel.Activation.WebServiceHostFactory" %> Self host WCF Ajax services but not exposing the services through Javascript. http://msdn.microsoft.com/en-us/library/bb943471%28v=VS.100%29.aspx Please help. Thanks.

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• Keep user connected with WCF

  - by Frank

  Hi, Context : I would like to create WCF Service that can be consumed by an ASP.NET web app and an iphone application. My goal : Create an SOA architecture. My problem : How "keep the user connected" on the WCF service? I tried asp.net membership provider with wcf and that works fine. But the problem is that I have to give username/password for each call. What can I do to resolve this problem? What's the best way to solve this kind of problem? Possible solution after googlising : Use Windows Identity Foundation. Thank you, Frank

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• Authenticating wcf service

  - by Muhammad Jamal Shaikh

  hi , i want to implement a web service which is both in java and .net.but i will first create a wcf service and later convert the code to java . for securing the webservice , i have this in my mind. i shall be implementing asp.net form authentication type of stuff . i intent to sent a token to the client on providing valid userID and password to the login method. in return i would send a token. on all other service operations i shall check the token . Now i have a wcf client and a wcf service . what should be the shortest way forward ?should i use soap auth header to send the user ID and password and how should the token be transported ( in which field ? http or soap's ?) . P.S: of course i shall enable ssl later.

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• HOWTO: Deserialize WCF message using OperationContract

  - by Stefan

  Hi, I succeeded in building a WCF client generated by svcutil.exe from the WSDL. Using the generated client proxy class I can call the web service of an external service supplier. I also succeeded in coding a message inspector, as I need to log both raw XML request and response as full SOAP message to the database. For an emergency szenario I also need to be able to "import" a raw XML response. I found many hints on using XMLSerializer or deserializing WCF messages based on the message contract. But how can I deserialize a raw XML response based on an operation contract? For a first test I use one of the logged raw responses, save it to a file and now try to deserialize it to the response type as generated in the client proxy. Somehow I must succeed in calling DeserializeReply() from class ClientOperation. But how to get there? I happily acced any help as I'm quite new to WCF... TIA, Stefan

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