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                RSS簡易信息聚合(也叫聚合內容)是一種RSS基于XML標準,在互聯網上被廣泛采用的內容包裝和投遞協議。RSS(Really Simple Syndication)是一種描述和同步網站內容的格式,是使用最廣泛的XML應用。RSS搭建了信息迅速傳播的一個技術平臺,使得每個人都成為潛在的信息提供者。發布一個RSS文件后,這個RSS Feed中包含的信息就能直接被其他站點調用,而且由于這些數據都是標準的XML格式,所以也能在其他的終端和服務中使用,是一種描述和同步網站內容的格式。RSS可以是以下三個解釋的其中一個: Really Simple Syndication;RDF (Resource Description Framework) Site Summary; Rich Site Summary。但其實這三個解釋都是指同一種Syndication的技術。 今天在win10.me看到一個rss,不知道是什么東西,打開看到? ![](https://box.kancloud.cn/2016-04-08_570763733bd57.jpg) 于是在網上查了RSS,又在微軟官網看到[https://msdn.microsoft.com/zh-cn/library/windows/apps/mt429379.aspx](https://msdn.microsoft.com/zh-cn/library/windows/apps/mt429379.aspx) 林政的書也有說過,不過他是用HttpWebRequest 我的rss是使用SyndicationClient? 先創建SyndicationClient ~~~ Windows.Web.Syndication.SyndicationClient client = new Windows.Web.Syndication.SyndicationClient(); Windows.Web.Syndication.SyndicationFeed feed; ~~~ 因為輸URL可能是錯的,所以微軟就用try catch ~~~ //uri寫在外面,為了在try之外不會說找不到變量 Uri uri = null; //uri字符串 string uriString = "http://www.win10.me/?feed=rss2"; try { uri = new Uri(uriString); } catch (Exception ex) { throw ex; } ~~~ 網絡請求有很多異常,我們放在try ~~~ try { //模擬http // 如果沒有設置可能出錯 client.SetRequestHeader("User-Agent", "Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.2; WOW64; Trident/6.0)"); feed = await client.RetrieveFeedAsync(uri); foreach (Windows.Web.Syndication.SyndicationItem item in feed.Items) { displayCurrentItem(item); } } catch (Exception ex) { // Handle the exception here. } ~~~ 我們寫一個函數處理每個SyndicationItem ~~~ private void displayCurrentItem(Windows.Web.Syndication.SyndicationItem item) { string itemTitle = item.Title == null ? "No title" : item.Title.Text; string itemLink = item.Links == null ? "No link" : item.Links.FirstOrDefault().ToString(); string itemContent = item.Content == null ? "No content" : item.Content.Text; string itemSummary = item.Summary.Text + ""; reminder = itemTitle + "\n" + itemLink + "\n" + itemContent+"\n"+itemSummary+"\n"; } ~~~ reminder是通知顯示,把每個不為空的值放在StringBuilder? ![](https://box.kancloud.cn/2016-04-08_5707637391de9.jpg) 看起來很多html,我們可以用WebUtility,Regex來得到文本 我們可以做一個顯示標題,然后點擊顯示內容 建一個類rssstr,這個類存放rss標題和內容 在viewModel 一個列表`ObservableCollection<rssstr>` 界面MainPage ~~~ <Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}"> <Grid.RowDefinitions > <RowDefinition > </RowDefinition> <RowDefinition Height="auto"/> </Grid.RowDefinitions> <ScrollViewer Grid.Row="0" VerticalScrollBarVisibility="Auto"> <ListView SelectionChanged="select" ItemsSource="{x:Bind view.rsslist}"> <ListView.ItemTemplate> <DataTemplate> <Grid> <Grid.RowDefinitions> <RowDefinition/> </Grid.RowDefinitions> <TextBlock Text="{Binding title}"/> </Grid> </DataTemplate> </ListView.ItemTemplate> </ListView> <!--<TextBlock Grid.Row="0" Text="{x:Bind view.reminder,Mode=OneWay}" TextWrapping="Wrap"/>--> </ScrollViewer> <Button Grid.Row="1" Margin="10,10,10,10" Content="確定" Click="Button_Click"/> </Grid> ~~~ 新建一個頁面rss_page ~~~ <Page.Resources> <Style x:Key="TextBlockStyle1" TargetType="TextBlock"> <Setter Property="Margin" Value="10,10,10,10"/> </Style> </Page.Resources> <Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}"> <Grid.RowDefinitions> <RowDefinition Height="auto"/> <RowDefinition /> <RowDefinition Height="auto"/> </Grid.RowDefinitions> <TextBlock Style="{StaticResource TextBlockStyle1}" Grid.Row="0" Text="{x:Bind view.title}"/> <TextBlock Style="{StaticResource TextBlockStyle1}" Grid.Row="1" Text="{x:Bind view.summary}"/> <Button Grid.Row="2" Content="確定" Click="Button_Click"/> </Grid> ~~~ 在列表被點擊 ~~~ private void select(object sender, SelectionChangedEventArgs e) { Frame frame = Window.Current.Content as Frame; frame.Navigate(typeof(rss_page), (ViewModel.rssstr)(sender as ListView).SelectedItem); } ~~~ rss_page viewModel使用rssstr ~~~ protected override void OnNavigatedTo(NavigationEventArgs e) { view = e.Parameter as rssstr; base.OnNavigatedTo(e); } ~~~ ![](https://box.kancloud.cn/2016-04-08_57076373b8fa0.jpg) ![](https://box.kancloud.cn/2016-04-08_57076373d9741.jpg) rss_page不能滾動TextBlock,可以使用ScrollViewer ~~~ <ScrollViewer Grid.Row="1"> <TextBlock Style="{StaticResource TextBlockStyle1}" Grid.Row="1" Text="{x:Bind view.summary}" TextWrapping="Wrap"/> </ScrollViewer> ~~~ 源代碼? [https://github.com/lindexi/lindexi_gd/tree/master/rss](https://github.com/lindexi/lindexi_gd/tree/master/rss) 鏈接:[http://pan.baidu.com/s/1sk7v6Zr](http://pan.baidu.com/s/1sk7v6Zr)?密碼:dzfa [Http://blog.csdn.net/lindexi_gd](http://blog.csdn.net/lindexi_gd) ![](https://box.kancloud.cn/2016-04-08_570763740976c.jpg) 參考:[http://www.cnblogs.com/linzheng/](http://www.cnblogs.com/linzheng/)
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