Cropping animated GIFs with code

Question

I am usinga piece of code like

string originalfilename = Server.MapPath(" ") + "\\img\\" + file_image.FileName;
string originalrelative = "\\img\\" + file_image.FileName;
file_image.SaveAs(originalfilename);
string thumbfilename = Server.MapPath(" ") + "\\img\\t_" + file_image.FileName;
string thumbrelative = "\\img\\t_" + file_image.FileName;
Bitmap original = new Bitmap(originalfilename);
int squareside = 0;
if (original.Width >= original.Height) { squareside = original.Height; } 
 else { squareside = original.Width; }
Bitmap squareimage = (Bitmap)original.Clone(
    new Rectangle(new Point(0, 0), new Size(squareside, squareside)),
    System.Drawing.Imaging.PixelFormat.DontCare);
Bitmap thumb = (Bitmap)squareimage.GetThumbnailImage(200, 200,
    new System.Drawing.Image.GetThumbnailImageAbort(ThumbnailCallback),
    IntPtr.Zero);
thumb.Save(thumbfilename);
file_original = file_image.PostedFile.FileName;
file_thumb = "t_"+file_image.PostedFile.FileName;

to get thumbnail images of each uploaded picture and I use the thumbnail versions of pictures around the website. How should I manipulate this code to preserve the gif files as animated gif files? When I get thumbnails for animated gifs, this code saves them as normal gifs. Of course bitmap class wouldn't support animated gifs but does .net framework support any alternative?

What do you mean by thumbnail version of an animated gif? small animated gif? — Shoban, Jul 25 '12 at 05:14
possible duplicate of [How to copy an animated gif image using C#?](http://stackoverflow.com/questions/539034/how-to-copy-an-animated-gif-image-using-c) - the answer there is [GifLib](http://www.codeplex.com/GifLib) — Jeremy Thompson, Jul 25 '12 at 05:30

Cropping animated GIFs with code

0 Answers0