Win10 uwp rss reader

Win10 uwp rss reader

RSS simple information aggregation (also called aggregate content) is a content packaging and delivery protocol widely used on the Internet based on XML standards. RSS (Really Simple Syndication) is a format used to describe and synchronize website content. It is the most widely used XML application. RSS builds a technical platform for rapid dissemination of information, making everyone a potential information provider. After an RSS file is published, the information contained in the RSS Feed can be directly called by other sites, and because the data is in a standard XML format, therefore, it can also be used in other terminals and services. It is a format for describing and synchronizing website content. RSS can be one of the following three interpretations: Really Simple Syndication; RDF (Resource Description Framework) Site Summary; Rich Site Summary. However, these three interpretations refer to the same Syndication technology.

I saw an rss feed in win10.me today. I don't know what it is.

Lin Zheng's book also said, but he uses HttpWebRequest <喎?http: www.bkjia.com kf ware vc " target="_blank" class="keylink"> Authorization + DQo8cHJlIGNsYXNzPQ = "brush: java;"> Windows.Web.Syndication.SyndicationClient client = new Windows.Web.Syndication.SyndicationClient(); Windows.Web.Syndication.SyndicationFeed feed;

Because the URL may be incorrect, Microsoft uses try catch

// Uri is written outside, so that the variable Uri uri = null is not found outside the try; // uri string uriString = "http://www.win10.me /? Feed = rss2 "; try {uri = new Uri (uriString);} catch (Exception ex) {throw ex ;}

There are many exceptions in network requests.

Try {// simulate http // client error may occur if no setting is set. 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 .}

We write a function to process every 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 is the notification display, which places each value not empty in StringBuilder

It looks like a lot of html. We can use WebUtility and Regex to get the text.

We can create a display title and click the display content.

Create a class rssstr, which stores the rss title and content

A list in viewModelObservableCollection

Interface MainPage

<Code class = "hljs xml"> <grid background = "{ThemeResource ApplicationPageBackgroundThemeBrush}"> <grid. rowdefinitions> <rowdefinition> </rowdefinition> <rowdefinition height = "auto"> </rowdefinition> </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}"> </textblock> </grid> </datatemplate> </listview. itemtemplate> </listview> <! -- {Cke_protected} {C} % 3C! % 2D % 2D % 3 CTextBlock % 20Grid. row % 3D % 220% 22% 20 Text % 3D % 22% 7Bx % 3 ABind % 20view. reminder % 2 CMode % 3 DOneWay % 7D % 22% 20 TextWrapping % 3D % 22 Wrap % 22% 2F % 3E % 2D % 3E --> </scrollviewer> </grid> </code> <button grid. row = "1" margin = "10, 10, 10" content = "OK" click = "Button_Click"> <code class = "hljs xml"> </code> </button>

Create a page named rss_page

<Code class = "hljs mathematica"> <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 height = "auto"> </rowdefinition> </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} "> </textblock> </grid> </code> <button grid. row = "2" content = "OK" click = "Button_Click"> <code class = "hljs mathematica"> </code> </button>

Click on the list

        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 uses rssstr

        protected override void OnNavigatedTo(NavigationEventArgs e)        {            view = e.Parameter as rssstr;            base.OnNavigatedTo(e);        }

Rss_page cannot scroll TextBlock. You can use ScrollViewer

<code class=" hljs mathematica">        <scrollviewer grid.row="1">            <textblock style="{StaticResource TextBlockStyle1}" grid.row="1" text="{x:Bind view.summary}" textwrapping="Wrap">       </textblock></scrollviewer></code>