Hello

The thumbnails in image gallery dialogue are broken; please can you tell me how I fix this. I have come across this issue in the forum a few times but it seems no one has posted a solution; I have also noticed that this issue affects some builds from time to time.

Please can you let me know how I fix it, what caused the problem and also how the thumbnail generation works?

Regards

 Bitmap bm;
 int _width = 100, _height = 100;
 float fx, fy, f;
 int widthTh, heightTh;
 float widthOrig, heightOrig;

 using (Bitmap bitmapNew = new Bitmap(new System.IO.MemoryStream(data)))
 {
  widthOrig = bitmapNew.Width;
  heightOrig = bitmapNew.Height;

  fx = widthOrig / _width;
  fy = heightOrig / _height; // subsample factors

  // must fit in thumbnail size
  f = Math.Max(fx, fy);
  if (f < 1)
  {
   //clone
   bm=new Bitmap(bitmapNew);
  }
  else
  {
   widthTh = (int)(widthOrig / f);
   heightTh = (int)(heightOrig / f);
   bm=(Bitmap)bitmapNew.GetThumbnailImage(widthTh, heightTh, new System.Drawing.Image.GetThumbnailImageAbort(ThumbnailCallback), IntPtr.Zero);
  }
 }

 Context.Response.ContentType = "image/Jpeg";
 bm.Save (Context.Response.OutputStream, ImageFormat.Jpeg);
}
  public bool ThumbnailCallback()
  {
   return false;