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Creating a file within a users isolated storage area

<UserControl x:Class='SilverlightApplication3.MainPage'     xmlns='http://schemas.microsoft.com/winfx/2006/xaml/presentation'      xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml'     xmlns:d='http://schemas.microsoft.com/expression/blend/2008'      xmlns:mc='http://schemas.openxmlformats.org/markup-compatibility/2006'      mc:Ignorable='d'      d:DesignWidth='640'      d:DesignHeight='480'>     <Grid x:Name="LayoutRoot" Background="White">         <Button x:Name="myButton" Content="Create isolated storage file" Height="30" Width="180" Click="myButton_Click" />     </Grid> </UserControl> //File: Page.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 System.IO; using System.IO.IsolatedStorage; using System.Windows.Browser; namespace SilverlightApplication3 {     public partial class MainPage : UserControl     {         public MainPage()         {             InitializeComponent();         }         private void myButton_Click(object sender, RoutedEventArgs e)         {             using (IsolatedStorageFile isoFile = IsolatedStorageFile.GetUserStoreForApplication())                                    {                 if (isoFile.FileExists("file1.txt"))                     isoFile.DeleteFile("file1.txt");                 using (IsolatedStorageFileStream stream = new IsolatedStorageFileStream("file1.txt", FileMode.Create, isoFile))                  {                     using (StreamWriter writer = new StreamWriter(stream))                                    {                                                                                             writer.Write("Hello, from the isolated storage area!");                                  }                                     }             }             HtmlWindow window = HtmlPage.Window;             window.Alert("File written!");         }     } }