Metro学习笔记+心得+体会（三）

 

五月快要结束了，还有14天就要会考，告诉自己：加油！

这是本月最后一篇教程，欢迎拍砖！

 

本篇博客要讲的是一个博客阅读器，我学习msdn的例子http://msdn.microsoft.com/zh-cn/LIbrary/br211380.aspx#Y25237，自已写了个关于我的博客的阅读器。

 

原理很简单，SyndicationClient类，以下是主要代码：

  1 public class FeedData
  2     {
  3         public string Title { set; get; }
  4         public string Description { get; set; }
  5         public DateTime PubDate { get; set; }
  6 
  7         private List<FeedItem> _Items = new List<FeedItem>();
  8         public List<FeedItem> Items
  9         {
 10             get
 11             {
 12                 return this._Items;
 13             }
 14         }
 15     }
 16     public class FeedItem
 17     {
 18         public string Title { get; set; }
 19         public string Author { get; set; }
 20         public string Content { get; set; }
 21         public DateTime PubDate { get; set; }
 22         public Uri Link { get; set; }
 23 
 24     }
 25 
 26     public class FeedDataSource
 27     {
 28         private ObservableCollection<FeedData> _Feeds=new ObservableCollection<FeedData>();
 29         public ObservableCollection<FeedData> Feeds
 30         {
 31             get
 32             {
 33                 return this._Feeds;
 34             }
 35         }
 36 
 37         public async Task GetFeedsAsync()
 38         {
 39             /*
 40             Task<FeedData> feed1 =
 41                 GetFeedAsync("http://windowsteamblog.com/windows/b/developers/atom.aspx");
 42             Task<FeedData> feed2 =
 43                 GetFeedAsync("http://windowsteamblog.com/windows/b/windowsexperience/atom.aspx");
 44             Task<FeedData> feed3 =
 45                 GetFeedAsync("http://windowsteamblog.com/windows/b/extremewindows/atom.aspx");
 46             Task<FeedData> feed4 =
 47                 GetFeedAsync("http://windowsteamblog.com/windows/b/business/atom.aspx");
 48             Task<FeedData> feed5 =
 49                 GetFeedAsync("http://windowsteamblog.com/windows/b/bloggingwindows/atom.aspx");
 50             Task<FeedData> feed6 =
 51                 GetFeedAsync("http://windowsteamblog.com/windows/b/windowssecurity/atom.aspx");
 52             Task<FeedData> feed7 =
 53                 GetFeedAsync("http://windowsteamblog.com/windows/b/springboard/atom.aspx");
 54             Task<FeedData> feed8 =
 55                 GetFeedAsync("http://windowsteamblog.com/windows/b/windowshomeserver/atom.aspx");
 56             // There is no Atom feed for this blog, so we use the RSS feed.
 57             Task<FeedData> feed9 =
 58                 GetFeedAsync("http://windowsteamblog.com/windows_live/b/windowslive/rss.aspx");
 59             Task<FeedData> feed10 =
 60                 GetFeedAsync("http://windowsteamblog.com/windows_live/b/developer/atom.aspx");
 61             Task<FeedData> feed11 =
 62                 GetFeedAsync("http://windowsteamblog.com/ie/b/ie/atom.aspx");
 63             Task<FeedData> feed12 =
 64                 GetFeedAsync("http://windowsteamblog.com/windows_phone/b/wpdev/atom.aspx");
 65             Task<FeedData> feed13 =
 66                 GetFeedAsync("http://windowsteamblog.com/windows_phone/b/wmdev/atom.aspx");
 67             
 68             this.Feeds.Add(await feed1);
 69             this.Feeds.Add(await feed2);
 70             this.Feeds.Add(await feed3);
 71             this.Feeds.Add(await feed4);
 72             this.Feeds.Add(await feed5);
 73             this.Feeds.Add(await feed6);
 74             this.Feeds.Add(await feed7);
 75             this.Feeds.Add(await feed8);
 76             this.Feeds.Add(await feed9);
 77             this.Feeds.Add(await feed10);
 78             this.Feeds.Add(await feed11);
 79             this.Feeds.Add(await feed12);
 80             this.Feeds.Add(await feed13);
 81             */
 82             Task<FeedData> feed12 =
 83     GetFeedAsync("http://feed.cnblogs.com/blog/u/116459/rss");
 84 
 85             Task<FeedData> feed13 =
 86     GetFeedAsync("http://feed.cnblogs.com/blog/sitehome/rss");
 87             this.Feeds.Add(await feed13);
 88             this.Feeds.Add(await feed12);
 89         }
 90 
 91         private async Task<FeedData> GetFeedAsync(string feedUriString)
 92         {
 93             SyndicationClient client = new SyndicationClient();
 94             Uri feedUri = new Uri(feedUriString);
 95 
 96             try
 97             {
 98                 SyndicationFeed feed = await client.RetrieveFeedAsync(feedUri);
 99                 FeedData feedData = new FeedData();
100                 feedData.Title = feed.Title.Text;
101                 if (feed.Subtitle.Text != null)
102                 {
103                     feedData.Description = feed.Subtitle.Text;
104                 }
105 
106                 feedData.PubDate = feed.Items[0].PublishedDate.DateTime;
107 
108                 foreach (SyndicationItem item in feed.Items)
109                 {
110                     FeedItem feedItem = new FeedItem();
111                     feedItem.Title = item.Title.Text;
112                     feedItem.PubDate = item.PublishedDate.DateTime;
113                     feedItem.Author = item.Authors[0].Name;
114 
115                     if (feed.SourceFormat == SyndicationFormat.Atom10)
116                     {
117                         feedItem.Content = item.Content.Text;
118                         feedItem.Link = item.Links[0].Uri;
119                     }
120                     feedData.Items.Add(feedItem);
121                 }
122                 return feedData;
123             }
124             catch (Exception)
125             {
126                 return null;
127             }
128         }
129 
130     }

完整的源码请鉴源码，由于时间关系，本博客不是很完整，本人也会在后续系列中修正。大家共同学习！

 

源码地址：

https://skydrive.live.com/redir?resid=F408A3D3DF420664!183&authkey=!ABl7sbIuIN_gzU8

 

posted @ 2012-05-30 22:56  deepwzh  阅读(796)  评论(0)  编辑  收藏  举报