WPF C# Tutorial

    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="Press F1 to get help" Height="250" Width="400">
  
    
      
        
        
        
      
    
    
  
   

//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;
namespace WpfApplication1
{
  public partial class MainWindow : System.Windows.Window
  {
    public MainWindow()
    {
      InitializeComponent();
      CommandBinding helpBinding = new CommandBinding(ApplicationCommands.Help);
      helpBinding.CanExecute += CanHelpExecute;
      helpBinding.Executed += HelpExecuted;
      CommandBindings.Add(helpBinding);
    }
    private void CanHelpExecute(object sender, CanExecuteRoutedEventArgs e)
    {
      e.CanExecute = true;
    }
    private void HelpExecuted(object sender, ExecutedRoutedEventArgs e)
    {
      MessageBox.Show("support", "Help!");
    }
  }
}