Writing text on an image

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        ' Load up a graphic
        Dim cityimg As Bitmap = New Bitmap("c:\\ourcityimage.jpg")
        ' Create a graphics object to work on the image
        Dim imgGraphics As Graphics = Graphics.FromImage(cityimg)
        ' Create a white rectangle on our image that is x=8, y=8 30 in width and 15 in height
        imgGraphics.FillRectangle(Brushes.White, 8, 8, 30, 15)
        ' Create a 10 pt font in verdana and write test in black, putting its coordinates in our white rectangle
        Dim ourFont As New Font("Verdana", 10)
        imgGraphics.DrawString("test", ourFont, New SolidBrush(Color.Black), 10, 9)
        ' Get a handle for the form and draw right on the form
        Dim formGraphics As Graphics = Graphics.FromHwnd(Me.Handle)
        formGraphics.DrawImage(cityimg, 10, 10)
End Sub