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="300" d:DesignWidth="400">

    <Grid x:Name="LayoutRoot" Background="White">
        <Controls:AnimatedImage x:Name="animatedImage1" HorizontalAlignment="Left" Height="236" Margin="36,27,0,0" VerticalAlignment="Top" Width="319"/>
    </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;
        }
    }
}