Client: C#
Patch: Adam Connelly & Jens Geyer
This closes #97
commit 
080b28eac31516ef9e3f988a87d890769f0751cd
 Author: Adam Connelly <adam@resdiary.com>
 Date: 2014-04-09T12:46:27Z
THRIFT-2456 Support async operations outside Silverlight
I altered TTransport to throw the NotSupportedExceptions to make it more obvious what's going on if someone generates their client using the async option, and then uses a transport that doesn't support it.
 /lib/c_glib/test/testtransportsocket
 /lib/c_glib/thriftc.pc
 /lib/c_glib/thrift_c_glib.pc
-/lib/csharp/src/bin/
-/lib/csharp/src/obj/
+/lib/csharp/**/bin/
+/lib/csharp/**/obj/
 /lib/d/libthriftd.a
 /lib/d/test/serialization_benchmark
 /lib/d/test/transport_test
 
             return connection;
                }
 
-#if SILVERLIGHT
         public override IAsyncResult BeginFlush(AsyncCallback callback, object state)
         {
             // Extract request and reset buffer
 
         }
 
-
         private void GetRequestStreamCallback(IAsyncResult asynchronousResult)
         {
             var flushAsyncResult = (FlushAsyncResult)asynchronousResult.AsyncState;
             }
         }
 
-#endif
 #region " IDisposable Support "
                private bool _IsDisposed;
 
 
         
         public virtual IAsyncResult BeginFlush(AsyncCallback callback, object state)
         {
-            return null;
+            throw new TTransportException(
+                TTransportException.ExceptionType.Unknown,
+                "Asynchronous operations are not supported by this transport.");
         }
 
         public virtual void EndFlush(IAsyncResult asyncResult)
         {
+            throw new TTransportException(
+                TTransportException.ExceptionType.Unknown,
+                "Asynchronous operations are not supported by this transport.");
         }
 
                #region " IDisposable Support "