WPF C# Tutorial

    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="WPF" Height="170" Width="200">
    
        
            
                
                    
                    
                
            

            
            
        
        
    

//File:Window.xaml.cs
using System;
using System.Windows;
using System.Windows.Input;
namespace WpfApplication1
{
    public partial class Window1 : Window
    {
        public Window1()
        {
            InitializeComponent();
            CheckKeyboardState();
        }
        private void Button_Click(object sender, RoutedEventArgs e)
        {
            CheckKeyboardState();
        }
        private void CheckKeyboardState()
        {
            chkLControl.IsChecked = Keyboard.IsKeyDown(Key.LeftCtrl);
            chkRControl.IsChecked = Keyboard.IsKeyDown(Key.RightCtrl);
            
        }
    }
}