public UploadThumb GetThumb(UploadedFile file, int width)
{
if (disposed) throw new ObjectDisposedException("UploadThumbGenerator");
if (!_thumbs.ContainsKey(file.TempKey))
_thumbs.Add(file.TempKey, new Dictionary<int, UploadThumb>());
var fileThumbs = _thumbs[file.TempKey];
if (fileThumbs.ContainsKey(width))
return (fileThumbs[width]);
var thumb = new UploadThumb();
try
{
using (var image = Image.FromFile(file.TempFilePathAbsolute))
using (var resized = image.Width <= width
? image
: ImageUtils.ResizeImage(image, width, false))
resized.Save(thumb.ThumbPathAbsolute, ImageFormat.Png);
fileThumbs.Add(width, thumb);
return thumb;
}
catch (OutOfMemoryException)
{
throw;
}
catch (Exception)
{
DeleteThumb(thumb);
return null;
}
}
private void DeleteThumb(UploadThumb thumb)
{
if (File.Exists(thumb.ThumbPathAbsolute))
File.Delete(thumb.ThumbPathAbsolute);
}