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How to swap Red and Blue channels on bitmap without using unsafe methods and fast in c#?

Thanks in advance.

Edit: Thanks . Here is the code in c#:
private Bitmap SwapRedAndBlueChannels(Bitmap bitmap)
            var imageAttr = new ImageAttributes();
            imageAttr.SetColorMatrix(new ColorMatrix(
                                                 new[] {0.0F, 0.0F, 1.0F, 0.0F, 0.0F},
                                                 new[] {0.0F, 1.0F, 0.0F, 0.0F, 0.0F},
                                                 new[] {1.0F, 0.0F, 0.0F, 0.0F, 0.0F},
                                                 new[] {0.0F, 0.0F, 0.0F, 1.0F, 0.0F},
                                                 new[] {0.0F, 0.0F, 0.0F, 0.0F, 1.0F}
            var temp = new Bitmap(bitmap.Width, bitmap.Height);
            GraphicsUnit pixel = GraphicsUnit.Pixel;
            using (Graphics g = Graphics.FromImage(temp))
                g.DrawImage(bitmap, Rectangle.Round(bitmap.GetBounds(ref pixel)), 0, 0, bitmap.Width, bitmap.Height,
                            GraphicsUnit.Pixel, imageAttr);
            return temp;
Posted 10-Mar-11 6:40am
Edited 10-Mar-11 7:32am
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Solution 2

You can do this by use of ImageAttributes.

Here[^] is an article that uses VB.NET, but the code is almost directly translatable to C#.
SAKryukov 10-Mar-11 12:15pm
Yes, this is good, my 5.
apaka 10-Mar-11 12:34pm
Thanks it works.
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Solution 1

Stack Overflow[^] adressed this recently.

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