ASP.NET Image uploading with Resizing

Question

I have an aspx page which will upload images to server harddisk from client pc

But now i need to change my program in such a way that it would allow me to resize the

Answer 1

public string ResizeImageAndSave(int Width, int Height, string imageUrl, string destPath)
    {
        System.Drawing.Image fullSizeImg = System.Drawing.Image.FromFile(imageUrl);
 double widthRatio = (double)fullSizeImg.Width / (double)Width;
  double heightRatio = (double)fullSizeImg.Height / (double)Height;
  double ratio = Math.Max(widthRatio, heightRatio);
 int newWidth = (int)(fullSizeImg.Width / ratio);
 int newHeight = (int)(fullSizeImg.Height / ratio);
        //System.Drawing.Image.GetThumbnailImageAbort dummyCallBack = new System.Drawing.Image.GetThumbnailImageAbort(ThumbnailCallback);
        System.Drawing.Image thumbNailImg = fullSizeImg.GetThumbnailImage(newWidth, newHeight, new System.Drawing.Image.GetThumbnailImageAbort(ThumbnailCallback), IntPtr.Zero);
 //DateTime MyDate = DateTime.Now;
 //String MyString = MyDate.ToString("ddMMyyhhmmss") + imageUrl.Substring(imageUrl.LastIndexOf("."));
 thumbNailImg.Save(destPath, ImageFormat.Jpeg);
 thumbNailImg.Dispose();
        return "";
    }
    public bool ThumbnailCallback() { return false; }