C#

dojohansen wrote:

I apologize for retorting!

dojohansen wrote:

So you're absolutely right, if maybe needlessly sarcastic,

dojohansen wrote:

I guess I couldn't quite believe that the poster would be asking about how the systems can communicate without saying more about it

void btnRun_click(object sender, EventArgs e)
{
  if (btnRun.Tag != null)
    MessageBox.Show("Not now you idiot, I'm busy.");
  else 
    ThreadPool.QueueUserWorkItem(new WaitCallback(process));
}


void process(object state)
{
  running = true;
  // Use try-finally so the flag is updated even if an exception occurs.
  try
  {
     ...
  }
  finally
  {
     running = false;
  }
}