silverlight处理gif格式图片

1.在工具箱中添加dll文件

2.工具栏中将显示此控件，填写xaml文件

 <UserControl
     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
     xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
     xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"

     xmlns:Controls="clr-namespace:ImageTools.Controls;assembly=ImageTools.Controls"
     x:Class="SilverlightApplication15.MainPage"

     mc:Ignorable="d"
     d:DesignHeight="" d:DesignWidth="">

     <Grid x:Name="LayoutRoot" Background="White">
         <Controls:AnimatedImage x:Name="animatedImage1" HorizontalAlignment="Left" Height="" Margin="36,27,0,0" VerticalAlignment="Top" Width=""/>
     </Grid>
 </UserControl>

3.在xaml.cs编写代码

 using ImageTools;
 using ImageTools.IO.Gif;
 using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Net;
 using System.Windows;
 using System.Windows.Controls;
 using System.Windows.Documents;
 using System.Windows.Input;
 using System.Windows.Media;
 using System.Windows.Media.Animation;
 using System.Windows.Media.Imaging;
 using System.Windows.Shapes;

 namespace SilverlightApplication15
 {
     public partial class MainPage : UserControl
     {
         public MainPage()
         {
             InitializeComponent();
             Initializedata();
         }
         private void Initializedata()
         {
             ImageTools.IO.Decoders.AddDecoder<GifDecoder>();
             ImageTools.ExtendedImage imgt = new ImageTools.ExtendedImage();
             imgt.UriSource = new Uri("3.gif", UriKind.RelativeOrAbsolute);
             animatedImage1.Source = imgt;
         }
     }
 }