public static byte[] ResizeImageFile(byte[] imageFile, int targetSizeW, int targetSizeH)
{
   System.Drawing.Image original = System.Drawing.Image.FromStream(new MemoryStream(imageFile));
   int targetH, targetW;
   targetW = targetSizeW;
   targetH = (int)(original.Height * ((float)targetSizeW / (float)original.Width));
   if (targetH > targetSizeH)
   {
      targetH = targetSizeH;
      targetW = (int)(original.Width * ((float)targetSizeH / (float)original.Height));
   }
   if (targetSizeW < (int)original.Width || targetSizeH < (int)original.Height)
   {
      System.Drawing.Image imgPhoto = System.Drawing.Image.FromStream(new MemoryStream(imageFile));
      // Create a new blank canvas.  The resized image will be drawn on this canvas.
      Bitmap bmPhoto = new Bitmap(targetW, targetH, PixelFormat.Format24bppRgb);
      bmPhoto.SetResolution(72, 72);
      Graphics grPhoto = Graphics.FromImage(bmPhoto);
      grPhoto.SmoothingMode = SmoothingMode.AntiAlias;
      grPhoto.InterpolationMode = InterpolationMode.HighQualityBicubic;
      grPhoto.PixelOffsetMode = PixelOffsetMode.HighQuality;
      grPhoto.DrawImage(imgPhoto, new Rectangle(0, 0, targetW, targetH), 0, 0, original.Width, original.Height, GraphicsUnit.Pixel);
      // Save out to memory and then to a file.  We dispose of all objects to make sure the files don't stay locked.
      MemoryStream mm = new MemoryStream();
      bmPhoto.Save(mm, System.Drawing.Imaging.ImageFormat.Jpeg);
      original.Dispose();
      imgPhoto.Dispose();
      bmPhoto.Dispose();
      grPhoto.Dispose();
      return mm.GetBuffer();
   }
   else
   {
      return imageFile;
   }
}