Graphics.AddMetafileComment Method

private void AddMetafileCommentBytes(PaintEventArgs e)
{
    // Create temporary Graphics object for metafile 
    //  creation and get handle to its device context.
    Graphics newGraphics = this.CreateGraphics();
    IntPtr hdc = newGraphics.GetHdc();

    // Create metafile object to record.
    Metafile metaFile1 = new Metafile("SampMeta.emf", hdc);

    // Create graphics object to record metaFile.
    Graphics metaGraphics = Graphics.FromImage(metaFile1);

    // Draw rectangle in metaFile.
    metaGraphics.DrawRectangle(new Pen(Color.Black, 5), 0, 0, 100, 100);

    // Create comment and add to metaFile. 
    byte[] metaComment = {(byte)'T', (byte)'e', (byte)'s', (byte)'t'};
    metaGraphics.AddMetafileComment(metaComment);

    // Dispose of graphics object.
    metaGraphics.Dispose();

    // Dispose of metafile.
    metaFile1.Dispose();

    // Release handle to temporary device context.
    newGraphics.ReleaseHdc(hdc);

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

    // Create existing metafile object to draw.
    Metafile metaFile2 = new Metafile("SampMeta.emf");

    // Draw metaFile to screen.
    e.Graphics.DrawImage(metaFile2, new Point(0, 0));

    // Dispose of metafile.
    metaFile2.Dispose();
}