我感覺我離MVVM越走越遠。。。。有點不是MVVM了

主視窗Ctrl+Q關閉程式  T工具視窗

<Window.Resources>
        <!-- 退出系統熱鍵-->
        <RoutedUICommand x:Key="CloseCommand" Text="Button Click"/>
        <!-- 工具箱熱鍵-->
        <RoutedUICommand x:Key="ToolBarCommand" Text="Button Click"/>
    </Window.Resources>
    <Window.InputBindings>
        <KeyBinding Gesture="Ctrl+Q"  Command="{StaticResource  CloseCommand}"/>
        <KeyBinding Key="T"   Command="{StaticResource ToolBarCommand}"/>
    </Window.InputBindings>
    <Window.CommandBindings>
        <CommandBinding Command="{StaticResource  CloseCommand}"
                        CanExecute="CommandBinding_CanExecute1"
                        Executed="CommandBinding_Executed1"/>
        <CommandBinding Command="{StaticResource ToolBarCommand}"
                        CanExecute="CommandBinding_CanExecute2"
                        Executed="CommandBinding_Executed2"/>
    </Window.CommandBindings>
 

/// <summary>
        /// Ctrl+Q 退出熱鍵繫結
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void CommandBinding_CanExecute1(object sender, CanExecuteRoutedEventArgs e)
        {
            e.CanExecute = true;
        }

        private void CommandBinding_Executed1(object sender, ExecutedRoutedEventArgs e)
        {
            this.Close();
        }

        /// <summary>
        /// "T"工具箱熱鍵  
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void CommandBinding_CanExecute2(object sender, CanExecuteRoutedEventArgs e)
        {
            e.CanExecute = true;
        }
        private void CommandBinding_Executed2(object sender, ExecutedRoutedEventArgs e)
        {          
            if (mainpageviewmodel == null)
            {
                MessageBox.Show("出錯！！！");
            }
            else
            {
                mainpageviewmodel.ToolBarExecute(this);
            }
        }
 

唯一與MVVM有關的是 ，在這裡有點選開啟連結

 mainpageviewmodel.ToolBarExecute(this)