GifDecoder Class

public class GifDecoder : MultiFramedImageDecoder, IDisposable

Public Class GifDecoder
	Inherits MultiFramedImageDecoder
	Implements IDisposable

// Open the file for reading.
FileStream fs = new FileStream(this.fileName, FileMode.Open, FileAccess.Read);

// Make sure it's a valid GIF.
GifDecoder gif = new GifDecoder();
if (gif.IsValidFormat(fs) == false)
{
    fs.Close();
    return;
}

// Seek back to the beginning of the file.
fs.Seek(0, SeekOrigin.Begin);

// The first time you access the GetFrameCount property,
// all of the frames are read into memory and are waiting
// for you to access them.
int count = gif.GetFrameCount(fs);

// Use the GifFrame properties to reconstruct the animation.
GifFrameCollection col = gif.Frames;

// Close the file.
fs.Close();

' Open the file for reading.
Dim fs As FileStream =  New FileStream(Me.fileName,FileMode.Open,FileAccess.Read) 

' Make sure it's a valid GIF.
Dim gif As GifDecoder =  New GifDecoder() 
If gif.IsValidFormat(fs) = False Then
    fs.Close()
    Return
End If

' Seek back to the beginning of the file.
fs.Seek(0, SeekOrigin.Begin)

' The first time you access the GetFrameCount property,
' all of the frames are read into memory and are waiting
' for you to access them.
Dim count As Integer =  gif.GetFrameCount(fs) 

' Use the GifFrame properties to reconstruct the animation.
Dim col As GifFrameCollection =  gif.Frames 

' Close the file.
fs.Close()