[RESOLVED] Hidden Characters after sending text via TCP

[menathang]

Hi, I'm new to the forums so please forgive me if I post this in the wrong section.
Anyway I'm having a problem where if I convert a string to bytes then send it through TCP, on the other end it does not convert properly. The original string is present in the received bytes although there appears to be some hidden characters stopping me from using a select case. Rough code is below...

Private Sub Listen()
 
        Dim LST_PORT as int16 = 9292    'Port to listen on'
        Dim TCP_LISTEN As TcpListener = New TcpListener(LST_PORT)
        TCP_LISTEN.Start()
 
        Try
 
            Dim TCP_CLIENT As TcpClient = TCP_LISTEN.AcceptTcpClient
 
            Dim NET_STREAM As NetworkStream = TCP_CLIENT.GetStream
 
            'reading data'
            Dim bytes(TCP_CLIENT.ReceiveBufferSize) As Byte
 
            NET_STREAM.Read(bytes, 0, TCP_CLIENT.ReceiveBufferSize)
 
            Dim RX_STRING As String = Encoding.ASCII.GetString(bytes)
 
 
            Select Case RX_STRING.Trim.ToUpper
 
                Case "1"
                    Console.Beep()
                Case "SHUTDOWN"
                    Process.Start("shutdown", "-f -s -t 00")
 
                Case Else
 
                    MsgBox(RX_STRING, MsgBoxStyle.OkOnly, "...")
 
 
            End Select
 
            TCP_CLIENT.Close()
 
        Catch ex As Exception
 
        End Try
        TCP_LISTEN.Stop()
 
 
    End Sub

Problem is if I send "beep" from the client program, rather than beeping the program instead follows the 'case else' and displays "beep" in a message box.
Any help would be very much appreciated. Thank you.