windows phone 7,sliverlight 下载网页的解析,关于wp7 gb2312编码

关于silverlight和wp7(windows phone 7)是默认不支持gb2312解码的,

所以从网上下载的Html大部分都是乱码。

例如：http://news.sina.com.cn/s/2011-11-25/120923524756.shtml

下面是演示一个wp7程序

 1    WebClient webClenet=new WebClient();
 2                     webClenet.DownloadStringAsync(new Uri("http://news.sina.com.cn/s/2011-11-25/120923524756.shtml", UriKind.RelativeOrAbsolute));     
 3            webClenet.DownloadStringCompleted += new DownloadStringCompletedEventHandler(webClenet_DownloadStringCompleted);
 4 
 5 
 6 
 7 
 8 
 9 
10 回调事件：
11 void webClenet_DownloadStringCompleted(object sender, DownloadStringCompletedEventArgs e)
12         {
13             string s= e.Result;
14 }

调试发现

几乎全部是乱码问题.

将编码设为utf-8同样是乱码。

于是引用了一个开源的库HtmlAgilityPack(包含编码还处理HTML节点)

下载地址为：http://www.codeplex.com/htmlagilitypack

将HtmlAgilityPack.dll引用到项目中,这时会弹出一个提示,大概就是这不是一个windows phone的类库,不理会,直接确定。

然后修改一下我们的代码

WebClient webClenet=new WebClient();
         webClenet.Encoding = new HtmlAgilityPack.Gb2312Encoding(); //加入这句设定编码
         webClenet.DownloadStringAsync(new Uri("http://news.sina.com.cn/s/2011-11-25/120923524756.shtml", UriKind.RelativeOrAbsolute));     
         webClenet.DownloadStringCompleted += new DownloadStringCompletedEventHandler(webClenet_DownloadStringCompleted);