Drawing an rectangle around the panel

[aashish_9601]

I have used this code to draw an rectangle around the panel

Private Sub Form1_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles Me.Paint
With Panel1
            e.Graphics.DrawRectangle(Pens.Gray, .Left - 1, .Top - 1, .Width + 1, .Height + 1)
        End With
End Sub

but when the form is resized the rectangle isnt drawn properly. The panel has Left,R,T,B anchor.