//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!"); } } }