.net - wpf代码+ VB.net中的EventSetters

Question

我必须将事件设置器添加到VB.NET.

在添加事件设置器时，我们必须传递 2 个参数。

1. 是 system.windows.routedevent
2. system.delegate。

我无法通过system.delegate。

Answer 1

您需要先Delegate用正确的签名定义 a ：

Delegate Sub HandlerDelegate(ByVal sender As Object, ByVal e As RoutedEventArgs)

然后在您的类中创建一个与该签名匹配的方法

Private Sub MyHandler(ByVal sender As Object, ByVal e As RoutedEventArgs)

End Sub

现在您可以定义一个HandlerDelegate类型的变量，将您的方法分配给它并将其传递给EventSetter构造函数：

Dim handler As HandlerDelegate
handler = AddressOf Me.MyHandler

Dim setter As EventSetter
setter = New EventSetter(routedEvent, handler)