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• Moving from WCF RIA Beta to RC: best practices?

  - by Duncan Bayne

  I have an existing WCF RIA project built on the Release Candidate; I'm now moving to the Release version & have discovered many changes. David Scruggs made the following comment on his (MSDN) blog: "If you’ve written anything in SIlverlight 4 RIA Services, you’ll need to rewrite it. There has been a lot of refactoring and namespace …

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• WCF fails to deserialize correct(?) response message security headers (Security header is empty)

  - by Soeteman

  I'm communicating with an OC4J webservice, using a WCF client. The client is configured as follows: <basicHttpBinding> <binding name="MyBinding"> <security mode="TransportWithMessageCredential"> <transport clientCredentialType="None" proxyCredentialType="None" realm=""/> <message…

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• How to fix "could not find a base address that matches schema http"... in WCF

  - by Craig Shearer

  I'm trying to deploy a WCF service to my server, hosted in IIS. Naturally it works on my machine :) But when I deploy it, I get the following error: This collection already contains an address with scheme http. There can be at most one address per scheme in this collection. Googling on this, I find that I…

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• How to remove default header from WCF REST Outgoing Response?

  - by bmsantos

  The following C# WCF based REST service gives me some undesired headers that I'm not sure if I can remove them trough the API. The interface: [ServiceContract] public interface IControlSystem { [OperationContract] [WebGet] System.IO.Stream About(); } The implementation: public class ControlSystem :…

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• How do I modify my WCF service to work with ASP.NET pages?

  - by Scott

  I created a WCF service (.NET 3.5) that grabs data from a db and returns a list of objects. It works just fine. I tested it using the WCFTestClient application and got the desired results. Now, I tried to create an ASP.NET web application and consume the service. After enabling <serviceDebug…

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• How to Maintain per-Client State in a WCF Service?

  - by tbischel

  I've created a WCF service in which I would like it to maintain state between calls from the client. I figured the easiest way to do this was to add this attribute to the service: [ServiceBehavior(InstanceContextMode = InstanceContextMode.PerSession)] since this is supposed to keep a…

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• Use ISAPI filter to trace and time a WCF call?

  - by Andrew Burke

  I'm building a web application using WCF that will be consumed by other applications as a service. Our app will be installed on a farm of web services and load balanced for scalability purposes. Occasionally we run into problems specific to one web server and we'd like to be able to…

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• How to optimize Core Data query for full text search

  - by dk

  Can I optimize a Core Data query when searching for matching words in a text? (This question also pertains to the wisdom of custom SQL versus Core Data on an iPhone.) I'm working on a new (iPhone) app that is a handheld reference tool for a scientific database. The main interface…

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• WCF - (504) The server did not return a response for this request.

  - by Sanjay Sen

  I have a JSONP WCF service,using back end as MySql.It is working properly when i run it locally with visual studio. Now we have hosted it in Windows Server 2003. Now there is very strange problem occurring.. When I do a request with fiddler which does not require much…

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• Should I use Base64 encoding or byte[] for returning binary data in .NET web service

  - by TigerShark

  I have a simple question. Should I return a byte-array or simply base64 encode my binary data, when exposing it through a web service in .NET? Is there any pros/cons with either method, which is mostly supported etc.

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• How to transfer large amount of data using WCF?

  - by JSprang

  We are currently trying to move large amounts of data to a Silverlight 3 client using WCF with PollingDuplex. I have read about the MultiplerMessagesPerPoll in Silverlight 4 and it appears to be quite a bit faster. Are there any examples out there for me to reference…

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• When should I open and close a website's cached WCF proxy?

  - by Brandon Linton

  I've browsed around the other articles on StackOverflow that relate to caching WCF proxies for reuse, and I've read this article explaining why I should explicitly open the proxy before calling anything on it. I'm still a little hazy on the best implementation…

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• SSRS 2008 - inclusion of subreport causes main report to return no data

  - by adolf garlic - SAVE BBC6MUSIC

  I have a report which worked perfectly. I inserted a subreport at the top (basically a cover sheet) Now the rest of the report runs, but has "no data available" all over it What is going on?!

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• How to publish web service produced data file accessible via browser

  - by neverman

  I need to make available to browsers data file produced by my web service method. Indeed the web service method should return url to produced file. I'm working with axis2 on tomcat.

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• Is using jquery to call a WCF Data Service from the UI violating the MVC pattern.

  - by Lee Dale

  I'm fairly new to ASP.Net MVC 2 and understand the MVC pattern in itself. But my question is what's the best way to populate dropdownlists in the UI sticking to the MVC pattern. Should I be going through the controller? Every article I've seen to do this…

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• Do i *have* to use ObservableCollection in Silverlight WCF client?

  - by Simon_Weaver

  When accessing Silverlight in WCF you get proxies generated with ObservableCollection Thats fine when you're databinding, but a little clumsy when you're just calling a method. For instance the following service method : [OperationContract] …

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• Is this a correct way to host a WCF service?

  - by mafutrct

  For some testing code, I'd like to be able to host a WCF service in only a few lines. I figured I'd write a simple hosting class: public class WcfHost : IDisposable where Implementation : class where Contract : class { public readonly string…

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• WCF: parameters handled in custom channel not present in generated WSDL.

  - by vfilby

  I have some special parameters to all my wcf service methods that are handled inside a custom channel and are not exposed in the service method parameter list. This works fine for json/xml endpoints, but the I don't know how to use a SOAP endpoint…

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• Why doesn't DomainContext from WCF RIA Services implement the IDisposable pattern ?

  - by Scott Davies

  Hi, Just doing some work with RIA services and I see in the MSDN documentation that neither it or any parents up its' hierarchy implement IDisposable. I'm wondering what the design decision was for this...as DomainContext is a stateful resource,…

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• WCF Project vs. A folder in the existing website project?

  - by user193189

  What way makes the most sense? I have a ASP.NET app... and maybe a Silverlight app in the future.. I want both to talk to web services.. At first, I like have the WCF project be by it self for the seperation.. But then I thought.. What is the…

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• Does a WCF service with basicHttpBinding create a new connection for each request?

  - by Phil Wright

  I have a Silverlight client calling a WCF Service on an IIS web server. It uses the default basicHttpBinding setting for the calls. My client code has the usual Visual Studio generated proxy that is generated when using the 'Update Service…

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• Dynamic data-entry value store

  - by simendsjo

  I'm creating a data-entry application where users are allowed to create the entry schema. My first version of this just created a single table per entry schema with each entry spanning a single or multiple columns (for complex types) with…

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• Does the WCF framework support the XSD IDREF restriction?

  - by Gerard

  A nice feature in XSD is the IDREF restriction, e.g.: <xs:restriction base="xs:IDREF"> <xs:pattern value="[0-9a-zA-Z\-]+"/> </xs:restriction> I used this restriction with great benefit in a Java JAXWS-project. An…

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• Is there a built-in way to determine the size of a WCF response?

  - by jaminto

  Before a client gets the full payload of the web request, we'd like to first send it a measurement of the size of the response it will get. If the response will be too large, the client will present a message to the user giving them…

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• Is it possible to change WCF service without regenerating & recompiling client proxy?

  - by Buu Nguyen

  Let's say I have a WCF service which has a method returning object Person. In one of the clients of this service, I can add service reference to the service and start using its method. Now, let's say the Person class is changed on…

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