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How to Create WCF Web Service on SharePoint 2010

By: Arjun Chakraborty

Today, I’d like to talk about how to create a WCF Web service for SharePoint 2010.  As you may know, currently there are no standard templates for creating web services for SharePoint 2010.  However, with a little tweaking, we can still create effective web services for SharePoint.  Here is how I approached creating a WCF Web Service on SharePoint 2010:

NOTE*: these steps require activating ‘anonymous’ authentication in IIS.   Despite anonymous authentication being active, SharePoint will still require you to sign in using your own credentials.  It would seem, IIS credentials are independent to SharePoint credentials.

1)    First, Create an Empty SharePoint Project on Visual Studio 2010.  I’ll call this project WCFTest001.  Make sure it is set it to Deploy as a Farm solution:

2)      Save the Project.  Then, right-click on the project and click on “Unload Project”.

Then, right click on the project again, and click on “Edit WCFTest001.csproj” (or whatever your project’s name is).
Then, add the following line:
Make sure this line is below <SandboxedSolution>False</SandboxedSolution>, which is already in the .csproj file!

Lastly, save the .csproj file, and click on reload project.
This is a very important step, because it sets the necessary namespaces for the service file mentioned in step 4.

3)      Now, we need to add the _vti_bin to the SharePoint project.  To do so, right click on the SharePoint Project, go to add, click on “SharePoint Mapped Folder…”
Select “ISAPI”, and press Okay. 

You should now have an ISAPI folder under the project:


4)   Right click on the ISAPI folder, and click on Add, and then New Item….  Select a text file under the General Tab.  Name it however you like, but make sure it has .svc as its extension.  I’ll call it WCFTest.svc.

Before we populate this file, first we need to create the code behind.  To do this, right click on the solution file, and click on Add and then New Project.  Add a project of type WCF Service Library.  I called mine WCFLib, because we will only be taking 2 files from that project and then removing the project from the solution.
The two files we want are IService1.cs and Service1.cs.  Copy those two using the Visual Studio Solution Explorer Pane, and paste them under WCFTest001:
Now, simply remove the WCFLib project from the solution.  I would also go ahead and create a simple class under WCFTest001 so I can copy paste the project’s namespace.  In this case, I left the class’s name as the default Class1.
Now, about those two files; The IService1 file declares the methods and objects that will be exposed by the web service.  The Service1 file actually implements those methods and objects.  Go ahead and rename them as you wish.  I will rename them as Test001Service.cs and ITest001Service.cs.  ALSO, I will change their namespace to that of this project!

At this point, you probably have a ton of errors.  This is because we do not yet have all the necessary references.  You will need to add the following references to your SharePoint project:

- System.ServiceModel
- System.Runtime.Serialization
- Microsoft.SharePoint.Client.ServerRuntime.dll  (this can be found in C:\windows\assembly\GAC_MSIL\Microsoft.SharePoint.Client.ServerRuntime\[something]\Microsoft.SharePoint.Client.ServerRuntime.dll )

At this point, all of your errors should have disappeared.

Take a look at the ITest001Service.cs file for a moment.  You will see 4 kids of tags; [ServiceContract], [OperationContract], [CompositeType], and [DataMember].  If you want to expose a web method (And, of course you do.  Why else would you make a web service?), then you have to use [ServiceContract], and [OperationContract].  [ServiceContract] designates a web service, and [OperationContract] designates a web method within that web service.  If you want to use non-primitive objects as parameters or return values for your web methods, then you must use the [CompositeType], and [DataMember] tags.  [CompositeType] designates an Class/Object, and [DataMember] designates a public property to or from which the client application (or whatever) stores or extracts data.

Also, let’s take a look at the Test001Service.cs because there are a couple important additions to make:


Notice the 4 using statements added inside the namespace, and the 2 tags added before the web service class.  These are necessary.

Now that we know the cs file name, namespace and class name, we can finish up the .svc file.  Open the WCFTest.svc file and paste:

ServiceHost Debug="true" Language="C#" Service="WCFTest001.Test001Service, $SharePoint.Project.AssemblyFullName$" CodeBehind="Test001Service.cs" %>

Note: you should change the values for the ‘Service’ and ‘CodeBehind’ attributes to fit your own service.  The Service simply points to the full namespace and class name for the web service.

Lastly, save the .svc file.

5)   Create the web.config file:

Right click on the ISAPI folder in Solution Explorer, and add another text file.  This time, make sure to name it “web.config”.

Set the web.config contents to:

<?xml version="1.0" encoding="utf-8" ?>





        <behavior name="WCFTest001.Test001ServiceBehavior">

          <serviceMetadata httpGetEnabled="true" />

          <serviceDebug includeExceptionDetailInFaults="false" />





      <service behaviorConfiguration="WCFTest001.Test001ServiceBehavior"


        <endpoint address="" binding="basicHttpBinding" contract="WCFTest001.ITest001Service">


            <dns value="localhost" />



        <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" />





NOTE: make sure to edit the values I’ve set to red.

In the end, the project should look like this:


6)   One more step before testing.  We need to enable ‘Anonymous’ Authentication in IIS for the applicable web applications.
Go to IIS through start -> administrative tools. 
Click on the applicable web application under the sites folder, and then click on the Authentication icon.


Then, enable Anonymous authentication:


7)   Finally, right click on the project, and click deploy.  Once Visual Studio says “Deploy Succeeded”, check out any SharePoint site to see if the web service exists.  To do so, use the following url: site_url/_vti_bin/service_Name.svc.

In my case, its http://arjunsp01:10000/_vti_bin/wcftest.svc

When the SharePoint project is deployed, it is deployed as a wsp file into Central Administration.  However, there are no features involved.  This web service is now available to every site on the farm.  However, it can only be used on the web applications where anonymous authentication is enabled.
The result should look something like this:


If you get this result, then the web service is working, and should be consumable by client applications and what not.  Next time, I will go over how to create asmx web services for SharePoint, which is slightly easier.


This article only reflects my own experience with creating web services for SharePoint.  If you have any complaints, questions or additional notes, please feel free to leave a comment.


Most of my knowledge regarding this matter came from:

·     This excellent MSDN article:

·     Conversations with Microsoft technical support.

·     Personal testing.


By: Arjun Chakraborty



Wouter Heesakkers

Great artical, thanks for sharing.
I did a web service to in SP2010, but only once until now,but without the web.config and other .svc content.

Why do you enable anonymous access? Can't you just enable anonymous access on the web application, but not on the site collection?

Grtz, Wouter
at 3/24/2011 3:39 PM


Thank you for the response!  I never set anonymous access to true in site collections; I only set it to true in web applications through IIS.  If I implied that anonymous access should be set on a site collection, could you please point out where?  Thanks!

at 4/4/2011 10:09 AM

New Balance 2011

You built some superior factors there. I searched this matter and located out that most of the people will concur with your blog.
at 4/11/2011 4:45 AM


I am getting the below error. Can you help me out.

The type 'WCFTest001.Test001Service, WCFTest001, Version=, Culture=neutral, PublicKeyToken=1b40828b828a8d86', provided as the Service attribute value in the ServiceHost directive could not be found.

Troubleshoot issues with Microsoft SharePoint Foundation.

Correlation ID: 539c3415-34e9-42c2-af82-d6c45988385f

Date and Time: 4/15/2011 2:21:36 PM
at 4/15/2011 4:54 AM


how to create slideshow webpart in sharepoint 2010 using jquery.
Plz let me know.
Its an urgent.Guide me.
at 4/27/2011 3:27 AM

mbt shoes

I like your article very much! It's worth reading.Thank you for sharing it!
at 5/19/2011 11:34 PM

Ian Hayse

thanks for the detailed instructions!

at 7/12/2011 12:06 PM

Jos van Putte

Thanks a lot ! This works quite well.
I had one minor problem activating the service due to the fact that line [AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Required)] is missing in the webservice definition.

Great stuff !
at 8/15/2011 8:08 AM


These kind of post are always inspiring and I prefer to read quality content so I'm happy to find many good point here in the post, writing is simply great, thank you for the post.
at 8/18/2011 3:01 AM

Creative Web Solutions

Thanks for taking the time to discuss this, I feel strongly about it and love learning more on this topic. If possible, as you gain expertise, would you mind updating your blog with more information? It is extremely helpful for me.
at 9/8/2011 6:20 AM



when m integrating with silverligth m getting an error cross domain pl help

advance thanks
at 9/14/2011 5:52 AM


Its a nice documentary ......
its vary good and helpful....

at 10/4/2011 7:39 AM

Bill Ross

Not only is your article well researched and documented, it also appears that it is also very rare but extremely important and useful info. Thanks so much for posting!
at 10/7/2011 6:50 AM

Bob Graham

Thank you for this post.   It helped me get up to speed quickly.
at 10/28/2011 3:33 PM

Gil Roitto

A word of caution:

The web.config will overwrite any existing web.config in C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\14\ISAPI on the SharePoint server. This means e.g. that other installations which have altered this file will have their changes lost.

So better is to NOT have web.config in the ISAPI mapped folder, but to edit these changes manually into the web.config in the path above.

When you follow these otherwise excellent steps in this guide, your Office Workspace, Office Web Apps etc will stop working. So make sure to backup the web.config in the path above before you work with this guide. This will save you some headaches.
at 3/12/2012 8:07 AM


Nice article ... It was very useful for me ... Thanks a lot ...
at 4/25/2012 11:43 PM

David Holland

Hi Arjun,

This is a clear article - well written.  I am getting an error when I attempt to run it:

The type 'WCFTest001.Test001Service', provided as the Service attribute value in the ServiceHost directive could not be found.

Is there something else about the IIS or SharePoint I must configure?

at 8/31/2012 1:44 PM

Zeeshan Hanif


Thanks for the nice tutorial.

I have managed to run the service in the sharepoint. But when i am adding the operationContracts, deploy it and update the service reference in the Client application there i cannot see those newly OperationContracts.

I am banging my head with it. Kindly reply asap so that i can get rid from this situation.

Thank you.
at 11/15/2012 2:06 AM

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