Windows Phone XML Parsing

I n windows phone applications we can parse an xml document easily. we just need to follow few steps for this purpose make a project. and have a MaiPage.xml as follows


<phone:PhoneApplicationPage
    x:Class="Recipe1_LinqToXml.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:phone="clr-namespace:Microsoft.Phone.Controls;assembly=Microsoft.Phone"
    xmlns:shell="clr-namespace:Microsoft.Phone.Shell;assembly=Microsoft.Phone"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d" d:DesignWidth="480" d:DesignHeight="768"
    FontFamily="{StaticResource PhoneFontFamilyNormal}"
    FontSize="{StaticResource PhoneFontSizeNormal}"
    Foreground="{StaticResource PhoneForegroundBrush}"
    SupportedOrientations="Portrait" Orientation="Portrait"
    shell:SystemTray.IsVisible="True" Loaded="MainPage_Loaded">

    <!--LayoutRoot is the root grid where all page content is placed-->
    <Grid x:Name="LayoutRoot" Background="Transparent">
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto"/>
            <RowDefinition Height="*"/>
        </Grid.RowDefinitions>

        <!--TitlePanel contains the name of the application and page title-->
        <StackPanel x:Name="TitlePanel" Grid.Row="0" Margin="12,17,0,28">
            <TextBlock x:Name="ApplicationTitle" Text="MY APPLICATION" Style="{StaticResource PhoneTextNormalStyle}"/>
            <TextBlock x:Name="PageTitle" Text="Linq To Xml" Margin="9,-7,0,0" Style="{StaticResource PhoneTextTitle1Style}"/>
        </StackPanel>

        <!--ContentPanel - place additional content here-->
        <Grid x:Name="ContentPanel" Margin="12,0,12,-13" Grid.Row="1">
            <ListBox x:Name ="lstTasks" Grid.Row="3" Grid.Column ="1">
                <ListBox.ItemTemplate>
                    <DataTemplate>
                        <Grid>
                            <Grid.RowDefinitions>
                                <RowDefinition />
                                <RowDefinition />
                                <RowDefinition Height="15" />
                            </Grid.RowDefinitions>

                            <Grid.ColumnDefinitions>
                                <ColumnDefinition Width="150" />
                                <ColumnDefinition Width="200" />
                                <ColumnDefinition Width="100" />
                            </Grid.ColumnDefinitions>

                            <TextBlock Grid.Row="0" Grid.Column="0" Text="{Binding Name}" FontWeight="Bold" Foreground="OrangeRed"/>
                            <TextBlock Grid.Row="0" Grid.Column="1" Text="{Binding DateDue}" />
                            <TextBlock Grid.Row="0" Grid.Column="2" Text="{Binding Priority}"  Foreground="Yellow"/>
                            <TextBlock Grid.Row="1" Grid.ColumnSpan="3" Text="{Binding Notes}" />
                            <TextBlock Grid.Row="2" Grid.ColumnSpan="3" />
                        </Grid>
                    </DataTemplate>
                </ListBox.ItemTemplate>
            </ListBox>
        </Grid>
    </Grid>
</phone:PhoneApplicationPage>

now copy the below given code to MainPage.xaml.cs


using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using Microsoft.Phone.Controls;

using System.IO;
using System.IO.IsolatedStorage;
using System.Xml;
using System.Xml.Linq;

namespace Recipe1_LinqToXml
{
    public partial class MainPage : PhoneApplicationPage
    {
        // Constructor
        public MainPage()
        {
            InitializeComponent();
          //  parseXMLUsingLinq("MyTasks.xml");
        }


        // Sample showing how to parse the XML using LINQ
        private void parseXMLUsingLinq(string passedXmlFileName)
        {
            XDocument xdoc = XDocument.Load(passedXmlFileName);
            IEnumerable<DataClass> iTasks;

            iTasks = from task in xdoc.Descendants("task")
                     select new DataClass
                     {
                         Name = (string)task.Attribute("name"),
                         Notes = (string)task.Attribute("notes"),
                         Priority = (string)task.Attribute("priority"),
                         DateDue = (DateTime)task.Attribute("datedue"),
                         DateCreated = (DateTime)task.Attribute("datecreated")
                     };
            lstTasks.ItemsSource = iTasks;
        }

        private void MainPage_Loaded(object sender, RoutedEventArgs e)
        {
            parseXMLUsingLinq("MyTasks.xml");
        }
    }
}

we need to make an another DataClass.cs with the code


using System;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Ink;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using System.Windows.Data;
using System.Runtime.Serialization;


namespace Recipe1_LinqToXml
{
    public class DataClass
    {
        public string Name { get; set; }
        public string Notes { get; set; }
        public string Priority { get; set; }
        public DateTime DateDue { get; set; }
        public DateTime DateCreated { get; set; }
    }
    public class DateFormatter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter,
            System.Globalization.CultureInfo culture)
        {
            string formatString = parameter as string;
            if (!string.IsNullOrEmpty(formatString))
            {
                return string.Format(culture, formatString, value);
            }
            return value.ToString();
        }

        public object ConvertBack(object value, Type targetType, object parameter,
            System.Globalization.CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }
}

also make a MyTasks.xml  with following xml


<?xml version="1.0" encoding="utf-8" ?>
<tasks>
  <task name="name 1" notes="notes 1" priority="Low" datedue="03/01/2011" datecreated="02/01/2011"/>
  <task name="name 2" notes="notes 2" priority="High" datedue="04/01/2011" datecreated="02/01/2011"/>
  <task name="name 3" notes="notes 3" priority="Medium" datedue="05/01/2011" datecreated="02/01/2011"/>
</tasks>

after running the project on emulator you can see the outpust as below