[C#] Pipe sauber schließen

 class clsCommunication
 {
 private byte[] buffer;
 private NamedPipeServerStream pipeServer;
 private volatile bool _Stop;
 Thread serverThread;

 #region Configuration
 private const int _BufferSize = 512;
 private const String _PipeName = "testpipe";
 private const PipeTransmissionMode _TransmissionMode = PipeTransmissionMode.Byte;
 #endregion

 public clsCommunication()

 {
 buffer = new byte[_BufferSize]; 
 }

 private string ByteArrayToString(byte[] arr)
 {
 System.Text.ASCIIEncoding enc = new System.Text.ASCIIEncoding();
 return enc.GetString(arr);
 }

 public void start()
 {
 _Stop = false;
 serverThread = new Thread(this.threadStart);
 serverThread.Start();
 }

 public void stop()
 {
 Debug.WriteLine("Server Stopping");
 _Stop = true;
 pipeServer.Close();
 pipeServer.Dispose();
 serverThread.Abort(); //serverThread.Join() just hangs
 }

 private void threadStart()
 {
 while (!_Stop)
 {
 pipeServer = new NamedPipeServerStream(_PipeName, PipeDirection.InOut, 1, _TransmissionMode);
 // Wait for a client to connect
 Debug.WriteLine("Pipe created, waiting for client");
 pipeServer.WaitForConnection();
 Debug.WriteLine("Client connected.");
 while (pipeServer.IsConnected)
 {
 pipeServer.Read(buffer, 0, 512);
 readcomplete(null);
 Thread.Sleep(10);
 //pipeServer.BeginRead(buffer, 0, _BufferSize, new AsyncCallback(readcomplete), null);
 }
 pipeServer.Close();
 pipeServer.Dispose();
 }


 }
 private void readcomplete(IAsyncResult result)
 {
 if (buffer[0] != 0x0)
 {
 Debug.WriteLine("Recieved: " + ByteArrayToString(buffer) );
 Debug.Write(Environment.NewLine);
 buffer = new byte[_BufferSize]; //fastest way to clear buffer?
 }
 }
 }