How to Make a Transparent Bitmap

Explains how to make a transparent bitmap in C#.

Method #1 - Fixed Transparency Color

Color TRANSPARENCY_COLOR = Color.FromArgb(255, 64, 255);
bitmap.MakeTransparent(TRANSPARENCY_COLOR);

Method #2 - Dynamic Transparency Color

Color transparentColor = bitmap.GetPixel(1,1);
bitmap.MakeTransparent(transparentColor);