Need Help with Code

I had to write a code that displays this
*****
*****
*****
I had to use the For...Next statements. The code works, except when I hit the start button to calculate it displays this
*****
*****
*****
If I hit it again it adds to it.
*****
*****
*****
*****
*****
*****
and it keeps going if I keep hitting the button. How can I stop it at the first calculation?

Here is the code.

Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click
For x As Integer = 1 To 3 Step 3
For y As Integer = 1 To 9 Step 2
asterisksLabel.Text = asterisksLabel.Text & "*"
Next y
asterisksLabel.Text = asterisksLabel.Text & ControlChars.NewLine
Next x
For x As Integer = 1 To 3 Step 2
For y As Integer = 1 To 9 Step 2
asterisksLabel.Text = asterisksLabel.Text & "*"
Next y
asterisksLabel.Text = asterisksLabel.Text & ControlChars.NewLine
Next x
End Sub

It is doing exactly what you told it to do. It is adding 3 sets of 5 asterisks to the existing text each time you click the command button. If you want to refresh the displayed text, you must clear the box first:
asterisksLabel.Text = ""

J.A. Coutts

I finally figured it out that I needed that before the code started. Thanks for the information