當我們使用GetType(RoutedEventHandler) 或GetType(RoutedEventArgs)註冊一個自定義路由事件時,有什麼區別?RoutedEventHandler vs RoutedEventArgs
EX1:
Public Shared ReadOnly TextChangedEvent As RoutedEvent = EventManager.RegisterRoutedEvent("TextChanged", _
RoutingStrategy.Bubble, GetType(RoutedEventArgs), GetType(MyCustomTextBlock))
EX2:
Public Shared ReadOnly TextChangedEvent As RoutedEvent = EventManager.RegisterRoutedEvent("TextChanged", _
RoutingStrategy.Bubble, GetType(RoutedEventHandler), GetType(MyCustomTextBlock))
有人學習WPF可能希望知道爲什麼這個問題被否決沒有這麼多評論。什麼是OP的錯誤。那些在黑暗中將保持在黑暗中。 – Tim 2013-05-12 12:19:53
我知道必須是一個委託類型,但是讓我問的是因爲我有一本書(Microsoft Windows應用程序開發.Net Framework 4)和它使用RoutedEventArgs的示例,它工作正常.... – apollon 2013-05-12 23:04:19