How to set an certain color as transparent color on bitmap

In C#, a Bitmap object represents an image, allowing you to manipulate and work with images in your application. You can load images from files or create new ones, access and modify pixel data, draw shapes and text, apply filters and effects, and save the image in various formats. Bitmap provides a robust and versatile tool for image manipulation, making it a core component for many image-related tasks in C# applications.

In order to make an certain color as transparent color on bitmap, you can set as below way:
 

Bitmap bmp = new Bitmap(w, h);

// Set white as transparent color
bmp m_Img.MakeTransparent(Color.White);