C# Addhandler不同于+；=处理程序语法

针对c#simular提出了以下问题：

但我的研究给出了不同的结果，与那里给出的答案相反

我用IronPython编写了一个基于

代码如下：

import wpf

from System.Windows import Application, Window
from System.Windows.Media import Brushes
from System.Windows import EventManager
from System.Windows import RoutedEventHandler, RoutedEventArgs

class MyWindow(Window):
    def __init__(self):
        wpf.LoadComponent(self, 'WpfTestApplication1.xaml')

        #self.MyPanel.MouseMove += self.Mouse_Move_Handler

        delegate = RoutedEventHandler(self.Mouse_Move_Handler)
        self.routed_events = EventManager.GetRoutedEvents()
        mouse_move_event = [ev for ev in self.routed_events if ev.Name =='MouseMove'][0]
        self.MyPanel.AddHandler(mouse_move_event,delegate)

        self.MyPanel.MouseLeave += self.Mouse_Leave_Handler
        self.MyButton.MouseMove += self.Button_Handler
        self.MyButton.Click += self.Button_Click
        self.MyButton.Click += self.Button_Click

    def Mouse_Move_Handler(self, sender, e):
        self.MyPanel.Background = Brushes.Red
        self.MyLabel.Content = 'Inside Panel'

    def Mouse_Leave_Handler(self,sender,e):
        self.MyPanel.Background = Brushes.Cyan
        self.MyLabel.Content = 'Outside Panel'

    def Button_Handler(self, sender, e):
        self.MyPanel.Background = Brushes.DarkBlue
        e.Handled = True

    def Button_Click(self, sender, event):
        self.MyLabel.Background = Brushes.SaddleBrown

if __name__ == '__main__':
    win = MyWindow()
    Application().Run(win)

现在，行为似乎完全相同。AddHandler例程有什么原因吗？ 还可以考虑尝试执行以下操作：

 AddHandler(self.MouseMove,delegate) or AddHandler(Window.MouseMove,delegate)

导致错误的原因：

ArgumentTypeException was unhandled by user code
expected RoutedEvent, got BoundEvent

有人能澄清一下情况吗？区别在哪里

编辑：通过使用Control.MouseMoveEvent而不是mouse_move_事件从EventManager中提取，代码可以减少以下两行：

    #self.routed_events = EventManager.GetRoutedEvents()
    #mouse_move_event = [ev for ev in self.routed_events if ev.Name =='MouseMove'][0]

我看不出有什么区别