Press F1 to get help : Event « Windows Presentation Foundation « C# / C Sharp

1. C# / C Sharp
2. Windows Presentation Foundation
3. Event

Press F1 to get help

   
<Window x:Class="WpfApplication1.MainWindow"
    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">
  <DockPanel>
    <Menu DockPanel.Dock ="Top" HorizontalAlignment="Left" Background="White">
      <MenuItem Header="_Edit">
        <MenuItem Command ="Copy"/>
        <MenuItem Command ="Cut"/>
        <MenuItem Command ="Paste"/>
      </MenuItem>
    </Menu>
    <TextBox AcceptsReturn ="True" Foreground ="Black" Background ="AliceBlue"></TextBox>
  </DockPanel>   
</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;

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!");
    }
  }
}

   
    
    
  

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