ExecutedRoutedEventArgs.Command 属性

定义

命名空间:

System.Windows.Input

程序集:

PresentationCore.dll

获取调用过的命令。

public:
 property System::Windows::Input::ICommand ^ Command { System::Windows::Input::ICommand ^ get(); };

public System.Windows.Input.ICommand Command { get; }

member this.Command : System.Windows.Input.ICommand

Public ReadOnly Property Command As ICommand

属性值

ICommand

与此事件关联的命令。

示例

以下示例创建一个 ExecutedRoutedEventHandler 处理多个命令的 。 处理程序检查 Command 上的 ExecutedRoutedEventArgs 属性以确定要调用的方法。

private void ExecutedDisplayCommand(object sender,
    ExecutedRoutedEventArgs e)
{
    RoutedCommand command = e.Command as RoutedCommand;

    if(command != null)
    {
        if(command == MediaCommands.Pause)
        {
               MyPauseMethod();
        }
        if(command == MediaCommands.Play)
        {
               MyPlayMethod();
        }
        if(command == MediaCommands.Stop)
        {
               MyStopMethod();
        }
    }
}

Private Sub ExecutedDisplayCommand(ByVal sender As Object, ByVal e As ExecutedRoutedEventArgs)
    Dim command As RoutedCommand = TryCast(e.Command, RoutedCommand)

    If command IsNot Nothing Then
        If command Is MediaCommands.Pause Then
               MyPauseMethod()
        End If
        If command Is MediaCommands.Play Then
               MyPlayMethod()
        End If
        If command Is MediaCommands.Stop Then
               MyStopMethod()
        End If
    End If
End Sub

注解

与 事件关联的命令可以强制转换为 的特定实现 ICommand，例如 RoutedCommand，如果类型已知。

另请参阅

• ExecutedRoutedEventHandler
• CommandBinding