.NET, convert png file into RGBA 32bit Bitmap, in memory

Question

var image = Image.FromFile(@"C:\image.png");

How do I convert this into a Bitmap in rgba32b format?

Answer 1

Bitmap original = new Bitmap(@"C:\image.png");
Bitmap clone = new Bitmap(original.Width, original.Height, System.Drawing.Imaging.PixelFormat.Format32bppPArgb);

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

Answer 2

The Save method can specify the format, so you can just save it out to a memory stream.