Windows Phone 7 网络编程之RSS阅读器.doc

本文由麦可网整理，转载请注明Windows Phone 7 网络编程之RSS阅读器 实现一个RSS阅读器，通过你输入的RSS地址来获取RSS的信息列表和查看RSS文章中的详细内容。RSS阅读器是使用了WebClient类来获取网络上的RSS的信息，然后再转化为自己定义好的RSS实体类对象的列表，最后绑定到页面上。（1） RSS实体类和RSS服务类 RssItem.csusing System.Net;using System.Text.RegularExpressions;namespace WindowsPhone.Helpers / / RSS对象类 / public class RssItem / / 初始化一个RSS目录 / / 标题 / 内容 / 发表事件 / 文章地址 public RssItem(string title, string summary, string publishedDate, string url) Title = title; Summary = summary; PublishedDate = publishedDate; Url = url; /解析html PlainSummary = HttpUtility.HtmlDecode(Regex.Replace(summary, +?, ); /标题 public string Title get; set; /内容 public string Summary get; set; /发表时间 public string PublishedDate get; set; /文章地址 public string Url get; set; /解析的文本内容 public string PlainSummary get; set; RssService.cs using System;using System.Collections.Generic;using System.IO;using System.Net;using System.ServiceModel.Syndication;using System.Xml;namespace WindowsPhone.Helpers / / 获取网络RSS服务类 / public static class RssService / / 获取RSS目录列表 / / RSS的网络地址 / 获取完成事件 public static void GetRssItems(string rssFeed, ActionIEnumerable onGetRssItemsCompleted = null, Action onError = null, Action onFinally = null) WebClient webClient = new WebClient(); /注册webClient读取完成事件 webClient.OpenReadCompleted += delegate(object sender, OpenReadCompletedEventArgs e) try if (e.Error != null) if (onError != null) onError(e.Error); return; /将网络获取的信息转化成RSS实体类 List rssItems = new List(); Stream stream = e.Result; XmlReader response = XmlReader.Create(stream); SyndicationFeed feeds = SyndicationFeed.Load(response); foreach (SyndicationItem f in feeds.Items) RssItem rssItem = new RssItem(f.Title.Text, f.Summary.Text, f.PublishDate.ToString(), f.Links0.Uri.AbsoluteUri); rssItems.Add(rssItem); /通知完成返回事件执行 if (onGetRssItemsCompleted != null) onGetRssItemsCompleted(rssItems); finally if (onFinally != null) onFinally(); ; webClient.OpenReadAsync(new Uri(rssFeed); （2） RSS页面展示 MainPage.xaml MainPage.xaml.cs using System.Windows;using System.Windows.Controls;using Microsoft.Phone.Controls;using WindowsPhone.Helpers;namespace ReadRssItemsSample public partial class MainPage : PhoneApplicationPage private string WindowsPhoneBlogPosts = ; public MainPage() InitializeComponent(); private void Button_Click(object sender, RoutedEventArgs e) if (rssURL.Text != ) WindowsPhoneBlogPosts = rssURL.Text; else MessageBox.Show(请输入RSS地址！); return; /加载RSS列表 RssService.GetRssItems( WindowsPhoneBlogPosts, (items) = listbox.ItemsSource = items; , (exception) = MessageBox.Show(exception.Message); , null ); /查看文章的详细内容 private void OnSelectionChanged(object sender, SelectionChangedEventArgs e) if (listbox.SelectedItem = n