Disposing a WCF Proxy Using an Extension Method

ICommunicationObjectExtensions.cs

public static class ICommunicationObjectExtensions
{
   public static void TryCloseOrAbort(this ICommunicationObject obj)
   {
      if (obj != null)
      {
         if (obj.State != CommunicationState.Faulted &&
             obj.State != CommunicationState.Closed)
         {
            try { obj.Close(); }
            catch (CommunicationObjectFaultedException)
            { obj.Abort(); }
            catch (TimeoutException)
            { obj.Abort(); }
            catch (Exception)
            {
               obj.Abort();
               throw;
            }
         }
         else
            obj.Abort();
      }
   }
}

Usage.cs

// Example usage:
//      assume MyServiceClient is a WCF service proxy class
var client = new MyServiceClient();

try { client.MyServiceMethod(); }
finally { client.TryCloseOrAbort(); }