Stop Stream.BeginRead()

Question

i need to read data from my virtual com port and detect the message \"Dreq\". Once i press the connect button, it connects to my COM8 port and begins reading in a new thread

Answer 1

You can try calling sp.DiscardOutBuffer(). It will call your read callback and you can then use stream.EndRead().

private void disconnectButton_Click(object sender, EventArgs e)
{
    sp.DiscardOutBuffer();
    stream.EndRead(recv_result);
    sp.Close();
}