inverti width ed height
es:
public Bitmap GetBitmap(Form frm)
{
Rectangle rect = new Rectangle(0, 0, frm.Width , frm.Height );
Bitmap bmp = new Bitmap( rect.Width, rect.Height);
this.DrawToBitmap(bmp, rect);
return bmp;
}
private void Form1_MouseDoubleClick(object sender, MouseEventArgs e)
{
Bitmap bmp = GetBitmap(this);
bmp.Save("c:\\frmTobmp.jpg", System.Drawing.Imaging.ImageFormat.Jpeg);
bmp.Dispose();
}