How can I update the value of a Label control periodically?

Question

I'm trying to make a label display some text, and then after a short while refresh itself and be able to re-display something else later. At the moment however I don't know how to make a label pause (if at all possible).

My code so far:

foreach (var x in mod)
{
      labelWARNING.Visible = true;
      labelWarningMessage.Text = "This module has a prerequisite module: " + x;
      //need a pause here to give user sufficient time to read the above text
      //labelWarningMessage.Text = "";
}

Answer 1

I used a timer.

private void timer1_Tick(object sender, EventArgs e)
{        
      labelWarningMessage.Text = "";
      labelWARNING.Visible = false;
}