• .NET Framework 4
• .NET Framework 3.5
• .NET Framework 3.0
• .NET Framework 2.0从指定的 Image 创建新的 Graphics。

• .NET Framework 4
• .NET Framework 3.5
• .NET Framework 3.0
• .NET Framework 2.0

private void FromImageImage(PaintEventArgs e)
{

    // Create image.
    Image imageFile = Image.FromFile("SampImag.jpg");

    // Create graphics object for alteration.
    Graphics newGraphics = Graphics.FromImage(imageFile);

    // Alter image.
    newGraphics.FillRectangle(new SolidBrush(Color.Black), 100, 50, 100, 100);

    // Draw image to screen.
    e.Graphics.DrawImage(imageFile, new PointF(0.0F, 0.0F));

    // Dispose of graphics object.
    newGraphics.Dispose();
}