If I get you right, you want to perform a click on button 2 programmatically, when the user clicks button 1, is that right?
If so:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
'Whatever you want to do
button1.PerformClick()
End Sub
See
this Link[
^] for information about
PerformClick
.