Silverlight 2 打造饭否Show

namespace SilverlightFanShow
{
/**////

public class FanfouUser
{
/**////

public Uri ImageURL{get;set;}

/**////

public string Name{get;set;}

/**////

public Uri URL{get;set;}

/**////

///
///
public static FanfouUser Load(Stream stream)
{
FanfouUser user = new FanfouUser();

try
{
XmlReader reader = XmlReader.Create(stream);
XElement doc = XElement.Load(reader);

user.ImageURL = new Uri(doc.Descendants("profile_image_url").FirstOrDefault().Value);
user.Name = doc.Descendants("name").FirstOrDefault().Value;
user.URL = new Uri(doc.Descendants("url").FirstOrDefault().Value);
}
catch { }

return user;
}

/**////

public FanfouUser()
{
this.ImageURL = new Uri("http://avatar.fanfou.com/s0/00/4q/py.jpg?1183096447");
this.Name = "Windie";
this.URL = new Uri("http://fanfou.com/笑煞天");
}
}

/**////

public class FanfouMessage
{
/**////

public string GUID { get; set; }

/**////

public string Message { get; set; }

/**////

public DateTime Time { get; set; }

/**////

///
///
public static List Load(Stream stream)
{
List msgList = new List();

try
{
XmlReader reader = XmlReader.Create(stream);
XElement doc = XElement.Load(reader);

IEnumerable msgs = from item in doc.Descendants("item")
select item;
foreach (XElement item in msgs)
{
FanfouMessage msg = new FanfouMessage();
msg.GUID = item.Descendants("guid").FirstOrDefault().Value;
msg.Message = item.Descendants("title").FirstOrDefault().Value;
msg.Time = DateTime.Parse(item.Descendants("pubDate").FirstOrDefault().Value);
msgList.Add(msg);
}
}catch{ }

return msgList;
}

/**////

namespace SilverlightFanShow
{
public partial class Page : UserControl
{
//饭否用户ID
private string userID;
//饭否用户
private FanfouUser user;

//当前消息
private FanfouMessage currentMessage;

//消息列表
private List messageList;

public Page(string id)
{
this.userID = id;
InitializeComponent();
}

/**////

///
///
private void LayoutRoot_Loaded(object sender, RoutedEventArgs e)
{
//加载用户信息
Uri userUrl = new Uri("http://api.fanfou.com/users/show/"
+ this.userID
+ ".xml");
WebRequest userRequest = WebRequest.Create(userUrl);
userRequest.BeginGetResponse(new AsyncCallback(GetUserInfo), userRequest);

//加载用户消息
Uri msgUrl = new Uri("http://api.fanfou.com/statuses/user_timeline/"
+ this.userID
+ ".rss");
WebRequest msgRequest = WebRequest.Create(msgUrl);
msgRequest.BeginGetResponse(new AsyncCallback(GetMessages), msgRequest);
}

/**////

///
void GetUserInfo(IAsyncResult asyncResult)
{
WebRequest request = asyncResult.AsyncState as WebRequest;
WebResponse response= request.EndGetResponse(asyncResult);
Stream stream = response.GetResponseStream();

user = FanfouUser.Load(stream);

//反映到UI
this.pic.SetValue(Image.SourceProperty, user.ImageURL);
this.userName.Text = user.Name;

}

/**////

///
void GetMessages(IAsyncResult asyncResult)
{
WebRequest request = asyncResult.AsyncState as WebRequest;
WebResponse response = request.EndGetResponse(asyncResult);
Stream stream = response.GetResponseStream();

messageList = FanfouMessage.Load(stream);

//反映到UI
if(messageList.Count > 1)
this.SetMessage(messageList[0]);

}

/**////

///
private void SetMessage(FanfouMessage message)
{
//去掉消息正文前边的用户名
string msg = message.Message.Substring(message.Message.IndexOf('：') + 1);
//如果消息正文过长，截短之
if (msg.Length > 50)
msg = msg.Substring(0, 50) + "";
this.txt.Text = msg;
this.time.Text = message.Time.ToShortDateString();
this.currentMessage = message;
}

/**////

///
///
private void btnNext_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
int msgIndex = messageList.IndexOf(currentMessage);
if (msgIndex + 1 0)
SetMessage(messageList[0]);
}

/**////

///
///
private void btnPrev_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
int msgIndex = messageList.IndexOf(currentMessage);
if (msgIndex > 0)
SetMessage(messageList[msgIndex - 1]);
else if (messageList.Count > 0)
SetMessage(messageList[messageList.Count - 1]);
}

/**////