How to return a dialog box result

I keep forgetting this but when you show a form via Showdialog you can check to see how that form was closed via  something like this:

If Form1.ShowDialog() = Windows.Forms.DialogResult.OK Then
   ....
End if

However when you do this in your Form1 you will need to specify the Dialog Result with something like this:

  Private Sub btnOK_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnOK.Click
    Me.Close()
    Me.DialogResult = Windows.Forms.DialogResult.OK
  End Sub

  Private Sub btnCancel_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCancel.Click
    Me.Close()
    Me.DialogResult = Windows.Forms.DialogResult.Cancel
  End Sub

More info (barely) can be found here : http://msdn.microsoft.com/en-us/library/ms745820.aspx