WPF C#

    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="WPF" Height="250" Width="300">
    
                          IsChecked="True" Margin="2" Name="checkbox1" 
                  />
                        Click="Button_Click" />
        
        
    

//File:Window.xaml.cs
using System.Linq;
using System.Windows;
using System.Windows.Controls;
namespace WpfApplication1
{
    public partial class Window1 : Window
    {
        public Window1()
        {
            InitializeComponent();
        }
        private void Button_Click(object sender, RoutedEventArgs e)
        {
            listbox.Items.Clear();
            foreach (CheckBox checkbox in panel.Children.OfType().Where( cb => cb.IsChecked == true))
            {
                listbox.Items.Add(checkbox.Name);
            }
        }
        private void CheckBox_Checked(object sender, RoutedEventArgs e)
        {
            if (!IsInitialized) return;
            CheckBox checkbox = e.OriginalSource as CheckBox;
            if (checkbox != null)
            {
                MessageBox.Show(checkbox.Name + " is checked.", Title);
            }
        }
    }
}