Converting Bitmap PixelFormats in C#

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Sloppy, not uncommon for GDI+. This fixes it:

Bitmap orig = new Bitmap(@"c:\temp\24bpp.bmp");
Bitmap clone = new Bitmap(orig.Width, orig.Height,
    System.Drawing.Imaging.PixelFormat.Format32bppPArgb);

using (Graphics gr = Graphics.FromImage(clone)) {
    gr.DrawImage(orig, new Rectangle(0, 0, clone.Width, clone.Height));
}

// Dispose orig as necessary...

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