RSS Reader

RSS Reader is a Simple application allowing access to RSS Feed content with LINQ-to-XML using Silverlight on Windows Phone 7.

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Step 1

Start Microsoft Visual Studio 2010 Express for Windows Phone, then Select File then New Project... Select "Visual C#" then "Silverlight for Windows Phone" and then "Windows Phone Application" from Templates, select a Location if you wish, then enter a name for the Project and then click OK, see below:

New Project

Step 2

A Windows Phone application Page named MainPage.xaml should then appear, see below:


Step 3

Select Project then Add Reference... The "Add Reference" window should appear, select "System.XML.Linq" from the ".NET" List, see below:

Add System.XML.Linq Reference

Step 4

Add the Reference to "System.XML.Linq" by Clicking on OK.
Select Project then "Add Class...", and select the "Class" Template is not already Selected, then change the "Name" to FeedItem.cs see below:

FeedItem Class

Step 5

Add the new Class to the Project by Clicking on Add, then in the Code View for the new Class, below the "{" of the line "public class FeedItem" type the following:

private string _title;
private string _description;
private string _link;
private string _guid;
private DateTime _published;

See Below:

FeedItem Class Declarations

Step 6

While still in the Code View for FeedItem.cs, below the "private DateTime _published;" line type the following Properties:

public string Title
  get { return _title; }
  set { _title = value; }

public string Description
  get { return _description; }
  set { _description = value; }

public string Link
  get { return _link; }
  set { _link = value; }

public string Guid
  get { return _guid; }
  set { _guid = value; }

public DateTime Published
  get { return _published; }
  set { _published = value; }

See Below:

FeedItem Class Properties

Step 7

Return to the MainPage Designer View by selecting the "MainPage.xaml" Tab.
Then in XAML Pane between the <Grid x:Name="ContentGrid" Grid.Row="1"> and </Grid> lines type the following XAML:

<Grid x:Name="ContentMain">
    <RowDefinition Height="80"/>
    <RowDefinition Height="*"/>
  <Grid x:Name="Toolbar" Grid.Row="0">
      <ColumnDefinition Width="*"/>
      <ColumnDefinition Width="Auto"/>
    <!-- Toolbar -->
  <!-- Content -->


MainPage XAML Pane


MainPage Design View

Step 8

Then from the Windows Phone Controls section in the Toolbox select the TextBox control:

TextBox Control

Step 9

Draw a TextBox onto the Toolbar Section (upper smaller section) of the Grid on the Page, below the Page Title, and in the XAML Pane below the <!-- Toolbar --> line, change "TextBox1" to the following:

<TextBox Grid.Column="0" Name="Location">
      <InputScopeName NameValue="Url"/>

See below:

MainPage with Location TextBox

Step 10

Then from the Windows Phone Controls section in the Toolbox select the Button control:

Button Control

Step 11

Draw a Button onto the Toolbar Section by dragging the Button from the Toolbox onto the Toolbar section of the Grid on the Page, then in the XAML Pane change the "Button1" line to the following:

<Button Grid.Column="1" Content="go" Click="Go_Click"/>

See below:

MainPage with Button

Step 12

While still in the XAML Pane for MainPage, below the <!-- Content--> line, type the following XAML:

<ScrollViewer Grid.Row="1" BorderThickness="0">
  <ItemsControl Name="Results">
          <HyperlinkButton NavigateUri="{Binding Path=Link}" Content="{Binding Path=Title}"/>
          <TextBlock TextWrapping="Wrap" Text="{Binding Path=Description}"/>
          <TextBlock Text="{Binding Path=Published}"/>

See below:

MainPage with ItemsControl

Step 13

Right Click on the Page or the entry for "MainPage.xaml" in Solution Explorer and choose the "View Code" option. In the Code View above "namespace RSSReader" type the following:

using System.Xml.Linq;
using System.Text.RegularExpressions;

See Below:

MainPage Includes

Step 14

While still the Code View for MainPage.xaml.cs above "public MainPage()" type the following Method:

private void Feed(object Sender, DownloadStringCompletedEventArgs e)
  XElement _xml;
    if (!e.Cancelled)
      _xml = XElement.Parse(e.Result);
      foreach (XElement value in _xml.Elements("channel").Elements("item"))
        FeedItem _item = new FeedItem();
        _item.Title = value.Element("title").Value;
        _item.Description = Regex.Replace(value.Element("description").Value, 
        @"<(.|\n)*?>", String.Empty);
        _item.Link = value.Element("link").Value;
        _item.Guid = value.Element("guid").Value;
        _item.Published = DateTime.Parse(value.Element("pubDate").Value);
    // Ignore Errors

See Below:

MainPage Feed Method

Step 15

While still in the Code View for MainPage.xaml.cs in the "public MainPage()" Constructor below "InitializeComponent();" type the following:

PageTitle.Text = "RSS Reader";
Location.Text = "";

See Below:

MainPage Constructor

Step 16

While still the Code View for MainPage.xaml.cs above "public MainPage()" type the following Event Handler:

private void Go_Click(object sender, RoutedEventArgs e)
  WebClient _client = new WebClient();
  _client.DownloadStringCompleted += Feed;
  _client.DownloadStringAsync(new Uri((Location.Text)));

See Below:

MainPage Event Handler

Step 17

Save the Project as you have now finished the Windows Phone Silverlight application. Select the Windows Phone Emulator option then Select Debug then Start Debugging or click on Start Debugging:

Start Debugging

After you do, the following will appear in the Windows Phone Emulator after it has been loaded:

Application Running

Step 18

Tap the TextBox and then using the SIP or Keyboard enter a RSS Feed URL to goto, then Tap on "go" to display the RSS Feed items, see below:

RSS Reader

Step 19

You can then Stop the application by selecting the Visual Studio 2010 application window and clicking on the Stop Debugging button:

Stop Debugging

This is a very simple RSS Reader, it will be possible to use the Syndication Framework of Silverlight to read any kind of RSS Feed instead of LINQ, this tutorial may be updated at a later date to use this instead, however you could do so yourself, or add more features - make it your own!


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