void WriteRawAsyncHandler(IAsyncResult ar)
{
AsyncResult a = (AsyncResult)ar;
PLC p = (PLC)a.AsyncState;
p.EndWrite(ar);
}
private void writeAsyncHandler(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(writeAsyncHandler), new object[] { ar });
return;
}
PLC p = (PLC)ar.AsyncState;
try
{
p.EndWrite(ar);
rwStatusL.Text = "Done";
}
catch (IndexOutOfRangeException exc)
{
rwStatusL.Text = "Out of range or max request capacity";
}
catch (Exception exc)
{
rwStatusL.Text = "Unexpected error: " + exc.Message;
}
}
public void ReadWriteRawAsyncTest()
{
const int INT_COUNT = 200;
MemoryStream ms = new MemoryStream(INT_COUNT * 4);
BinaryWriter bw = new BinaryWriter(ms);
for (int i = 0; i < INT_COUNT; i++)
{
bw.Write(i * 2);
}
IAsyncResult ar = plc.BeginWriteRaw(0, ms.GetBuffer(), null, null);
ar.AsyncWaitHandle.WaitOne();
plc.EndWrite(ar);
ar = plc.BeginRead(0, INT_COUNT * 4, null, null);
ar.AsyncWaitHandle.WaitOne();
BinaryReader br = plc.EndRead(ar);
for (int i = 0; i < INT_COUNT; i++)
{
Assert.AreEqual(i * 2, br.ReadInt32());
}
}
