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1.Failed to invoke the service. Possible causes: The service is offline or inaccessible; the client-side configuration does not match the proxy; the existing proxy is invalid. Refer to the stack trace for more detail. You can try to recover by starting a new proy, restoring to default configuration, or refreshing the service.
Error is : The underlying connection was closed: The connection was closed unexpectedly.

this is my 3 file...

        List<Vehicle_Master> GetVehicle();

public List<Vehicle_Master> GetVehicle()
            //Configuration.ProxyCreationEnabled = false;
            var result = (from var in dcdc.Vehicle_Masters select var).ToList();
            return result.ToList();

    <add name="Database1ConnectionString1" connectionstring="Data Source=najar-pc\sqlexpress;Initial Catalog=Database1;Integrated Security=True">
      providerName="System.Data.SqlClient" />
    <compilation debug="true" targetframework="4.0" />
          <!-- To avoid disclosing metadata information, set the value below to false and remove the metadata endpoint above before deployment -->
          <servicemetadata httpgetenabled="true" />
          <!-- To receive exception details in faults for debugging purposes, set the value below to true.  Set to false before deployment to avoid disclosing exception information -->
          <servicedebug includeexceptiondetailinfaults="false" />
    <servicehostingenvironment multiplesitebindingsenabled="true" />
    <modules runallmanagedmodulesforallrequests="true" />

I have spend so much time but i have not solve it. please help me..
Updated 5-Oct-12 19:08pm

1 solution

Its always a good idea to return your collection as an Array rather a lit from WCF .

Please check the following in your applicaiton

--> Your object has some some uninitialised object internally and its not getting serialized.
--> Convert signature from List to Array (always a good idea to avoid dirty serialization issues )
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