File upload Service for browser client and problem on passing the fileName

I'm trying to create a File Upload service using WCF for a Browser client, so I'm hosting the service in ASP.Net and using webHttpBinding.
The service contract needs to be something like this:

namespace�FileUpload.Service �

{ �

����[ServiceContract] �

����public�interface�IFileUploadService �

����{ �

��������[OperationContract] �

��������[WebInvoke(UriTemplate�=�"UploadFile/{fileName}")] �

��������void�UploadFile(string�fileName,�Stream�fileContent); �

����} �

}�

I need the fileName to save the file with the given name and as we know, when using Stream as a parameter, it has to be the only parameter in Message Body.
If I wasn't using webHttpBinding, I could have create a MessageContract and pass the fileName in Message Header, but since I do have to use webHttpBinding, this is not an option.
The only way to have fileName as input parameter is to pass it in Uri as shown above.

Having the contract, I implemented the service like:

namespace�FileUpload.Service �

{ �

����[AspNetCompatibilityRequirements(RequirementsMode�=�AspNetCompatibilityRequirementsMode.Allowed)] �

����public�class�FileUploadService �

��������:�IFileUploadService �

����{

��������#region�IFileUploadService�Members �

�

��������public�void�UploadFile(string�fileName,�Stream�fileContent) �

��������{ �

������������using�(StreamReader�fileContentReader�=�new�StreamReader(fileContent)) �

������������{ �

����������������string�content�=�fileContentReader.ReadToEnd(); �

������������} �

��������}

��������#endregion �

����} �

} �

and the web.config like:

<system.serviceModel>�

��<behaviors>�

����<endpointBehaviors>�

������<behavior�name="fileUploadEndpointBehavior"> �

��������<webHttp�/>�

������</behavior>�

����</endpointBehaviors>�

����<serviceBehaviors>�

������<behavior�name="fileUploadServiceBehavior"> �

��������<serviceDebug�includeExceptionDetailInFaults="true"�/>�

��������<serviceMetadata�httpGetEnabled="true"�/>�

������</behavior>�

����</serviceBehaviors>�

��</behaviors>�

��<serviceHostingEnvironment�aspNetCompatibilityEnabled="true"�/>�

��<services>�

����<service�name="FileUpload.Service.FileUploadService"�behaviorConfiguration="fileUploadServiceBehavior"> �

������<endpoint�address=""�behaviorConfiguration="fileUploadEndpointBehavior"�

��������binding="webHttpBinding"�contract="FileUpload.Service.IFileUploadService"�/>�

����</service>�

��</services>�

</system.serviceModel>�

And the problem is, I get an exception on having fileName as an input parameter beside fileContent by browsing http://localhost/FileUpload.svc:

An ExceptionDetail, likely created by IncludeExceptionDetailInFaults=true, whose value is:
System.InvalidOperationException: An exception was thrown in a call to a WSDL export extension: System.ServiceModel.Description.DataContractSerializerOperationBehavior
�contract: http://tempuri.org/:IFileUploadService ----> System.InvalidOperationException: For request in operation UploadFile to be a stream the operation must have a single parameter whose type is Stream.
�� at System.ServiceModel.Dispatcher.StreamFormatter.ValidateAndGetStreamPart(MessageDescription messageDescription, Boolean isRequest, String operationName)
�� at System.ServiceModel.Dispatcher.StreamFormatter.Create(MessageDescription messageDescription, String operationName, Boolean isRequest)
�� at System.ServiceModel.Description.MessageContractExporter.ExportMessage(Int32 messageIndex, Object state)
�� at System.ServiceModel.Description.MessageContractExporter.ExportMessageContract()
�� at System.ServiceModel.Description.DataContractSerializerOperationBehavior.System.ServiceModel.Description.IWsdlExportExtension.ExportContract(WsdlExporter exporter, WsdlContractConversionContext contractContext)
�� at System.ServiceModel.Description.WsdlExporter.CallExtension(WsdlContractConversionContext contractContext, IWsdlExportExtension extension)
�� --- End of inner ExceptionDetail stack trace ---
�� at System.ServiceModel.Description.ServiceMetadataBehavior.MetadataExtensionInitializer.GenerateMetadata()
�� at System.ServiceModel.Description.ServiceMetadataExtension.EnsureInitialized()
�� at System.ServiceModel.Description.ServiceMetadataExtension.HttpGetImpl.InitializationData.InitializeFrom(ServiceMetadataExtension extension)
�� at System.ServiceModel.Description.ServiceMetadataExtension.HttpGetImpl.GetInitData()
�� at System.ServiceModel.Description.ServiceMetadataExtension.HttpGetImpl.TryHandleDocumentationRequest(Message httpGetRequest, String[] queries, Message& replyMessage)
�� at System.ServiceModel.Description.ServiceMetadataExtension.HttpGetImpl.ProcessHttpRequest(Message httpGetRequest)
�� at System.ServiceModel.Description.ServiceMetadataExtension.HttpGetImpl.Get(Message message)
�� at SyncInvokeGet(Object , Object[] , Object[] )
�� at System.ServiceModel.Dispatcher.SyncMethodInvoker.Invoke(Object instance, Object[] inputs, Object[]& outputs)
�� at System.ServiceModel.Dispatcher.DispatchOperationRuntime.InvokeBegin(MessageRpc& rpc)
�� at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage5(MessageRpc& rpc)
�� at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage4(MessageRpc& rpc)
�� at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage3(MessageRpc& rpc)
�� at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage2(MessageRpc& rpc)
�� at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage1(MessageRpc& rpc)
�� at System.ServiceModel.Dispatcher.MessageRpc.Process(Boolean isOperationContextSet)

I even tried hosting the service as follows, and surprisingly it works: (but I need it to be hosted by ASP.Net)

ServiceHost�host�=�new�ServiceHost(typeof(FileUploadService),�new�Uri("http://localhost/FileUpload")); �

ServiceEndpoint�serviceEndpoint�=�host.AddServiceEndpoint(typeof(IFileUploadService),�new�WebHttpBinding(),�""); �

serviceEndpoint.Behaviors.Add(new�WebHttpBehavior()); �

host.Open();�

Dose anyone have any idea What am I doing wrong?!
I really appreciate your concern.

Source: http://social.msdn.microsoft.com/Forums/en-US/wcf/thread/b2cf07ee-e0b8-4fed-a9ae-2bac06e0c4d6

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