public void Test_EndRequest_After_Dispose() { using (TestServer server = new TestServer(ServiceName)) { server.Register(); server.SetData(TopicName, ItemName, 1, Encoding.ASCII.GetBytes(TestData)); using (DdeClient client = new DdeClient(ServiceName, TopicName)) { client.Connect(); IAsyncResult ar = client.BeginRequest(ItemName, 1, null, null); Assert.IsTrue(ar.AsyncWaitHandle.WaitOne(Timeout, false)); client.Dispose(); byte[] data = client.EndRequest(ar); } } }