public void CmdAsyncTest()
{
IAsyncResult ar = plc.BeginCmd(ASCIIEncoding.ASCII.GetBytes("help"), null, null);
ar.AsyncWaitHandle.WaitOne();
Response resp = plc.EndCmd(ar);
string str = resp.String;
Assert.AreEqual(true, resp.String.StartsWith("Available commands:"));
}
private void ResponseHandler(IAsyncResult ar)
{
PLC plc = (PLC)ar.AsyncState;
Response resp = plc.EndCmd(ar);
if (resp.String.Contains("OK!"))
{
MessageBox.Show("Run command succesfull");
}
else
{
MessageBox.Show("Run command failed");
}
}
private void cmdAsyncHandler(IAsyncResult ar)
{
if (InvokeRequired)
{
// We'll update GUI, so we need to pass the async call back processing
// to the GUI thread.
BeginInvoke(new AsyncCallback(cmdAsyncHandler), new object[] { ar });
return;
}
PLC p = (PLC)ar.AsyncState;
Response resp = p.EndCmd(ar);
// Let's convert UNIX line endings to Windows.
string respStr = resp.String.Replace("\n", "\r\n");
// And append a new line, just in case.
respStr += "\r\n";
cmdRespTB.AppendText(respStr);
}