C# Resized images have black borders

Question

I have a problem with image scaling in .NET. I use the standard Graphics type to resize images like in this example:

public static Image Scale(Image sourceIm         


        

Answer 1

The real solution is to use an overload of the DrawImage which allows you to pass a ImageAttributes object.

On the ImageAttributes instance, call the following method before passing it to DrawImage:

using (var ia = new ImageAttributes())
{
    ia.SetWrapMode(WrapMode.TileFlipXY);
    aGraphic.DrawImage(..., ia);
}

See also this answer