Operation 'ProcessRequestForMessage' in contract 'IRequestHandler' specifies Method '*' on the WebGetAttribute/WebInvokeAttribute. RRS feed

  • Question

  • Hello,

    I have created WCF data service Framework 4.6.1 and EF6. I am getting below error when i try to publish the service. Appreciate your inputs as i am new to this:

    Operation 'ProcessRequestForMessage' in contract 'IRequestHandler' specifies Method '*' on the WebGetAttribute/WebInvokeAttribute, but the only allowed values for Method are GET or POST. Other values are not supported by 'System.ServiceModel.Description.WebScriptEnablingBehavior'. 

    My code looks like:

    [ServiceBehavior(IncludeExceptionDetailInFaults = true)]
        [AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)]
        public class MyService : DataService<ObjectContext>
            public static void InitializeService(IDataServiceConfiguration config)
                config.SetEntitySetAccessRule("*", EntitySetRights.All);
                config.UseVerboseErrors = true;
            protected override ObjectContext CreateDataSource()
                var context = new RegistryContext();
                var objectContext = ((IObjectContextAdapter)context).ObjectContext;
                objectContext.ContextOptions.ProxyCreationEnabled = false;
                return objectContext;

    Config file looks like:

          <service name="Services.MyService">
            <endpoint address="" behaviorConfiguration="Services.MyServiceAspNetAjaxBehavior"
              binding="webHttpBinding" contract="System.Data.Services.IRequestHandler" />
            <behavior name="Service.MyServiceAspNetAjaxBehavior">
              <enableWebScript />
            <behavior name="">
              <serviceMetadata httpGetEnabled="true" httpsGetEnabled="true" />
              <serviceDebug includeExceptionDetailInFaults="false" />
          <add binding="basicHttpsBinding" scheme="https" />
        <serviceHostingEnvironment aspNetCompatibilityEnabled="true" multipleSiteBindingsEnabled="true" />

    Wednesday, October 11, 2017 1:27 PM

All replies

  • Hi Kodnil,

    It looks like you are mixing SOAP with data service,  since data service is actually a REST service,  it cannot be mixed with SOAP.

    To define a service operation, apply the [WebGet] or [WebInvoke] attribute to the method. To support query operators, the service operation must return an IQueryable<T> instance.

    Check this article: https://docs.microsoft.com/en-us/dotnet/framework/data/wcf/how-to-define-a-service-operation-wcf-data-services

    Best Regards,


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    Saturday, October 14, 2017 8:37 AM