c# - How to create 1024x1024 RGB bitmap image of white?

Question

It's embarrassing to ask this question but can't find an answer.

I tried this in vain.

Image resultImage = new Bitmap(image1.Width, image1.Height, PixelFormat.Format24bppRgb);

using (Graphics grp = Graphics.FromImage(resultImage)) 
{
    grp.FillRectangle(
        Brushes.White, 0, 0, image1.Width, image1.Height);
    resultImage = new Bitmap(image1.Width, image1.Height, grp);
}

I basically want to fill a 1024x1024 RGB bitmap image with white in C#. How can I do that?

question from:https://stackoverflow.com/questions/12502365/how-to-create-1024x1024-rgb-bitmap-image-of-white

Answer 1

You are assigning a new image to resultImage, thereby overwriting your previous attempt at creating a white image (which should succeed, by the way).

So just remove the line

resultImage = new Bitmap(image1.Width, image1.Height, grp);