how to display a message box when timer elapses in c#

Question

I gave my time interval as 100. when the timer elapsed the message box is displayed but my screen is flooded with message boxes. How should i stop it with one message box indica

Answer 1

I guess (as you don't provide code), in the Interrupt Service Routine:

public void YourTimer_Tick(object sender, EventArgs e)
{
      YourTimer.Stop();
      MessageBox.Show("You message...");
}