Removing items from the isolated storage area : IsolatedStorage « Data « Silverlight






Removing items from the isolated storage area

Removing items from the 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="Delete files from isolated storage" Click="myButton_Click" Height="40" Width="200" />
    </Grid>
</UserControl>

//File: Page.xaml.cs
using System;
using System.Collections.Generic;
using System.IO.IsolatedStorage;
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.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())
            {
                CreateIsoStore(isoFile);

                isoFile.DeleteFile("testfile1.txt");
                isoFile.DeleteFile("file1.txt");

                HtmlWindow window = HtmlPage.Window;
                bool testfile1Exists = isoFile.FileExists("testfile1.txt");
                bool file1Exists = isoFile.FileExists("file1.txt");
                Console.WriteLine(testfile1Exists);
                Console.WriteLine(file1Exists);
            }
        }

        private void CreateIsoStore(IsolatedStorageFile isoFile)
        {
            isoFile.CreateDirectory("Directory1");

            IsolatedStorageFileStream textfile2 = isoFile.CreateFile("textfile2.xml");
            textfile2.Close();

            IsolatedStorageFileStream textfile1 = isoFile.CreateFile("textfile1.txt");
            textfile1.Close();

            IsolatedStorageFileStream testfile1 = isoFile.CreateFile("testfile1.txt");
            testfile1.Close();

            IsolatedStorageFileStream nestedFile = isoFile.CreateFile("file1.txt");
            nestedFile.Close();
        }
    }
}

   
    
    
    
  








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3.Creating subdirectories within the isolated storage areaCreating subdirectories within the isolated storage area
4.Creating a file quota bar associated with the user's isolated storage areaCreating a file quota bar associated with the user's isolated storage area
5.Asks the user if the Silverlight application can double the amount of available isolated storage.Asks the user if the Silverlight application can double the amount of available isolated storage.
6.Creating a file within a user's isolated storage areaCreating a file within a user's isolated storage area
7.Reading a file from a user's isolated storage area.Reading a file from a user's isolated storage area.
8.Using the * wildcard characterUsing the * wildcard character
9.Retrieving the isolated storage for a userRetrieving the isolated storage for a user