How to get the location of a bar with respect to screen in MainFrameBarManager?

private void button1_Click(object sender, EventArgs e)
{
   CommandBar cbe = mainFrameBarManager1.GetBarControl(bar1);
   this.textBox1.Text=cbe.PointToScreen(cbe.Location).ToString();
}

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
   Dim cbe As CommandBar = MainFrameBarManager1.GetBarControl(Bar1)
   Me.TextBox1.Text = cbe.PointToScreen(cbe.Location).ToString() 
End Sub