c# - screen captures part of form

private void button2_Click(object sender, EventArgs e)
    {

    using (Bitmap bmp = new Bitmap(Width, Height))
        {
        using (Graphics g = Graphics.FromImage(bmp))
            {
            g.CopyFromScreen(this.Location.X, 
                             this.Location.Y, 
                             0, 
                             0, 
                             bmp.Size, 
                             CopyPixelOperation.SourceCopy);
            }

        bmp.Save(@"F:\printscreen.jpg", ImageFormat.Jpeg);
        }
    }