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Multithreading question

Posted By:      Posted Date: April 14, 2011    Points: 0   Category :Windows Application

Hello there,

I want to show a message while a consuming time operation runs. I know that I've to use a thread for that. But why I can't use it in this way:

private void button1_Click(object sender, EventArgs e)
    ThreadPool.QueueUserWorkItem(new WaitCallback(ShowWorking));
//Consuming time operation
  for (int i=0;i<10000;i++)

private void ShowWorking(object stateinfo)
  this.Invoke(new EventHandler(updMsg))

private void updMsg(object sender, EventArgs e)
  lblWorking.Visible = true;

Why I have to put in the thread the consuming time operation?

Thx in >>

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