کد تغییر اندازه یک تصویر در سی شارپ

using System.Drawing.Drawing2D;

private static Image resizeImage(Image imgToResize, Size size)
{
    int sourceWidth = imgToResize.Width;
    int sourceHeight = imgToResize.Height;
 
    float nPercent = 0;
    float nPercentW = 0;
    float nPercentH = 0;
 
    nPercentW = ((float)size.Width / (float)sourceWidth);
    nPercentH = ((float)size.Height / (float)sourceHeight);
 
    if (nPercentH < nPercentW)
        nPercent = nPercentH;
    else
        nPercent = nPercentW;
 
    int destWidth = (int)(sourceWidth * nPercent);
    int destHeight = (int)(sourceHeight * nPercent);
 
    Bitmap b = new Bitmap(destWidth, destHeight);
    Graphics g = Graphics.FromImage((Image)b);
    g.InterpolationMode = InterpolationMode.HighQualityBicubic;
 
    g.DrawImage(imgToResize, 0, 0, destWidth, destHeight);
    g.Dispose();
 
    return (Image)b;
}