<Application x:Class="NavigationApplication.App"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
StartupUri="StartupWindow.xaml" NavigationFailed="App_NavigationFailed">
</Application>
//File:Window.xaml.cs
using System;
using System.Windows;
using System.Data;
using System.Xml;
using System.Configuration;
using System.Windows.Threading;
using System.Windows.Navigation;
namespace NavigationApplication
{
public partial class App : System.Windows.Application
{
private void App_NavigationFailed(object sender, NavigationFailedEventArgs e)
{
if (e.Exception is System.Net.WebException)
{
MessageBox.Show("Website " + e.Uri.ToString() + " cannot be reached.");
e.Handled = true;
}
}
}
}
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