Is Window active : Window « Windows Presentation Foundation « C# / C Sharp

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C# / C Sharp » Windows Presentation Foundation » WindowScreenshots 
Is Window active
Is Window active
   


<Window x:Class="WpfApplication1.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="AppWindowsSample" Height="200" Width="300" 
    xmlns:my="clr-namespace:System;assembly=mscorlib">
  <StackPanel>
    <Menu Name="menu1" >
      <MenuItem Header="Window" x:Name="windowMenu">
        <MenuItem Header="SubmenuOpened event" />
      </MenuItem>
    </Menu>
    <Button Margin="10" Name="newWindowButton" Height="23" VerticalAlignment="Top">New Window</Button>
    <StatusBar Grid.Row="2" Name="statusBar1" >
      <TextBlock x:Name="statusText">Status</TextBlock>
    </StatusBar>
    <Button Height="23" Margin="10" Name="shutdownButton" VerticalAlignment="Top" >Shutdown</Button>
  </StackPanel>
</Window>
//File:Window.xaml.cs

using System;
using System.Collections.Generic;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Shapes;
using System.Windows.Controls.Primitives;
using System.Diagnostics;
using System.ComponentModel;


namespace WpfApplication1 {
  public partial class Window1 : System.Windows.Window {

    public Window1() {
      InitializeComponent();

      DataContext = Application.Current.Windows;
      statusText.Text = Application.Current.ShutdownMode.ToString();

      newWindowButton.Click += new RoutedEventHandler(newWindowButton_Click);
      shutdownButton.Click += new RoutedEventHandler(shutdownButton_Click);
      windowMenu.SubmenuOpened += new RoutedEventHandler(windowMenu_SubmenuOpened);
      Closing += Window1_Closing;
    }

    public void windowMenu_SubmenuOpened(object sender, RoutedEventArgs e) {
      windowMenu.Items.Clear();
      foreachWindow window in Application.Current.Windows ) {
        MenuItem item = new MenuItem();
        item.Header = window.Title;
        item.Click += windowMenuItem_Click;
        item.Tag = window;
        item.IsChecked = window.IsActive;
        windowMenu.Items.Add(item);
      }
    }

    public void windowMenuItem_Click(object sender, RoutedEventArgs e) {
      Window window = (Window)((MenuItem)sender).Tag;
      window.Activate();
    }

    public void newWindowButton_Click(object sender, RoutedEventArgs e) {
      Window window = new Window();
      window.Title = "Window " + DateTime.Now;
      window.Width = 200;
      window.Height = 100;
      window.Show();
      statusText.Text = Application.Current.ShutdownMode.ToString();
    }

    void shutdownButton_Click(object sender, RoutedEventArgs e) {
      Application.Current.Shutdown();
    }

    void Window1_Closing(object sender, CancelEventArgs e) {
      ifMessageBox.Show("Do you really want to shut down?""Shutting Down", MessageBoxButton.YesNo== MessageBoxResult.No ) {
        e.Cancel = true;
      }
    }


  }
}

   
    
    
  
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