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ShutdownMode OnLastWindowClose

<Window x:Class="ApplicationShutdownSample.MainWindow"     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"     Title="Main Window" Height="300" Width="300" Loaded="MainWindow_Loaded">   <StackPanel>       <Label HorizontalAlignment="Left">Shutdown Mode:</Label>       <ComboBox HorizontalAlignment="Left" Name="shutdownModeListBox"></ComboBox>       <Button Click="explicitShutdownButton_Click">Shutdown Explicitly (Passing Exit Code)</Button>   </StackPanel> </Window> //File:Window.xaml.cs using System; using System.Windows; using System.Windows.Controls; using System.Windows.Data; using System.Windows.Documents; using System.Windows.Media; using System.Windows.Media.Imaging; using System.Windows.Shapes; namespace ApplicationShutdownSample {     public partial class MainWindow : Window     {         public MainWindow()         {             InitializeComponent();         }         void MainWindow_Loaded(object sender, RoutedEventArgs e)         {             this.shutdownModeListBox.Items.Add("OnLastWindowClose");             this.shutdownModeListBox.Items.Add("OnExplicitShutdown");             this.shutdownModeListBox.Items.Add("OnMainWindowClose");             this.shutdownModeListBox.SelectedValue = "OnLastWindowClose";             this.shutdownModeListBox.SelectionChanged += new SelectionChangedEventHandler(shutdownModeListBox_SelectionChanged);             Application.Current.ShutdownMode = ShutdownMode.OnLastWindowClose;         }         void shutdownModeListBox_SelectionChanged(object sender, SelectionChangedEventArgs e)         {             Application.Current.ShutdownMode = (ShutdownMode)Enum.Parse(typeof(ShutdownMode), this.shutdownModeListBox.SelectedValue.ToString());         }         void explicitShutdownButton_Click(object sender, RoutedEventArgs e)         {             int exitCode = 0;             Application.Current.Shutdown(exitCode);         }     } }