//File: Page.xaml.cs using System; using System.Collections.Generic; using System.IO; 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) { OpenFileDialog openFileDialog = new OpenFileDialog(); openFileDialog.Filter = "Text files (*.txt)|*.txt|Xml Files (*.xml)|*.xml"; bool? fileWasSelected = openFileDialog.ShowDialog(); if (fileWasSelected == true) { FileInfo fileInfo = openFileDialog.File; StreamReader reader = fileInfo.OpenText(); HtmlWindow window = HtmlPage.Window; window.Alert(reader.ReadToEnd()); } } } }