Mit einem Image im OnPaint Event des Formular.
protected override void OnPaint(PaintEventArgs e) {
Image newImage = Image.FromFile("MyImage.jpg");
float x = 100.0F;
float y = 100.0F;
float width = 450.0F;
float height = 150.0F;
e.Graphics.DrawImage(newImage, x, y, width, height);
}