Convert Transparent PNG to JPG with white Background Color in C#

Question

hi all

i am using C#. i want to Convert Transparent PNG to JPG with white Background Color
normally i am using these code.

Image img = Image.FromFile(filename);
img.Save(newFilename, System.Drawing.Imaging.ImageFormat.Jpeg);

it works fine. but background color is black.
Is there any way to make the background white instead?

best regards
NazHim

Answer 1

For example :

            Bitmap bmp = new Bitmap(img.Width, img.Height, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
            using (Graphics g = Graphics.FromImage(bmp))
            {
                g.Clear(Color.White);
                g.DrawImage(img, new Rectangle(new Point(), img.Size), new Rectangle(new Point(), img.Size), GraphicsUnit.Pixel);                    
            }
            bmp.Save(newFilename, System.Drawing.Imaging.ImageFormat.Jpeg);