RoutedCommand简单用法

Command都是继承自ICommand接口，wpf内部实现了RoutedCommand类，内部还有常用的静态RoutedUICommand实例

    ApplicationCommands

    ComponentCommands

    NavigationCommands

    MediaCommands

    EditingCommands

常见的操作都应该够用，如果不够用就自己加，如果要实现自己的业务逻辑，也需要自己去实现ICommand

1.创建命令

    RoutedCommand command = new RoutedCommand("Show", typeof(Window));

   //RoutedCommand command = ApplicationCommands.New;

   command.InputGestures.Add(new KeyGesture(Key.C, ModifierKeys.Alt);//组合键

2.绑定命令

   this.btn.Command = command;

   CommandBinding cb = new CommandBinding(command, Cb_Executed, Cb_CanExecute);

   this.stackPanel.CommandBinding.Add(cb);

3.Exe,CanExe方法

   private void Cb_Executed(object sender, ExecutedRoutedEventArgs e)

   { 

        ...

   }

   private void Cb_CanExecute(object sender, CanExecuteRoutedEventArgs e)

   {

        if ()

             e.CanExecute = true;

       else

            e.CanExecute = false;

   }

xaml写法

<Window.CommandBinding>

    <CommandBinding Command="New" CanExecute="Cb_CanExecute" Execute="Cb_Execute"/>

</Window.CommandBinding>

<Button Command="New">