WPF C#

  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  xmlns:system="clr-namespace:System.Windows;assembly=PresentationFramework"
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
  Title="Main Window" Height="310" Width="280" Loaded="Window1_Loaded">
  
    
      
        
          
            
          

        
        
      

    
  

  
    
      
      
    

    
      
        
          
        

      

    
    
      
            IsChecked="{Binding ElementName=lbxWindows, Path=SelectedItem.IsVisible, Mode=OneWay}" 
      Checked="CheckBox_Checked_Changed" 
        Unchecked="CheckBox_Checked_Changed"/>
      
      
      
    
  


//File:Window.xaml.cs
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Media;
namespace WpfApplication1
{
    public partial class Window1 : Window
    {
        public Window1()
        {
            InitializeComponent();
        }
        private void Window1_Loaded(object sender, RoutedEventArgs e)
        {
            for (int i = 1; i <= 5; i++)
            {
                Window window = new Window();
                SetupWindow(window, "Window " + i);
                window.Show();
            }
            
            RebuildWindowList();
        }
        private void SetupWindow(Window window, string title)
        {
            window.Closing += new CancelEventHandler(Window_Closing);
            window.Closed += new EventHandler(Window_Closed);
            window.Title = title;
            window.Width = 100d;
            window.Height = 100d;
            window.Content = title;
        }
        private void RebuildWindowList()
        {
            List windows = new List();
            foreach (Window window in Application.Current.Windows)
            {
                if (window == this)
                    continue;
                windows.Add(window);
            }
            lbxWindows.ItemsSource = windows;
        }
        private void Window_Closed(object sender, EventArgs e)
        {
            RebuildWindowList();
        }
        private void Window_Closing(object sender, CancelEventArgs e)
        {
            Window w = sender as Window;
            if (w == null)
                return;
            e.Cancel = !cbxCanClose.IsChecked == true;
        }
        private void CheckBox_Checked_Changed(object sender, RoutedEventArgs e)
        {
            Window window = lbxWindows.SelectedItem as Window;
            if (window == null) 
                return;
            if (cbxIsVisible.IsChecked == true)
                window.Show();
            else
                window.Hide();
        }
        private void btnBringToFront_Click(object sender, RoutedEventArgs e)
        {
            Window window = lbxWindows.SelectedItem as Window;
            if (window != null)
                window.Activate();
        }
        private void btnClose_Click(object sender, RoutedEventArgs e)
        {
            Window window = lbxWindows.SelectedItem as Window;
            if (window != null)
                window.Close();
        }
    }
}