ServiceManager.RemoveCallback(Delegate, Delegate) 方法

定义

命名空间:

System.Activities.Presentation

程序集:

System.Activities.Presentation.dll

一个帮助器方法，该方法执行 Delegate.Remove 操作，并对作为泛型回调代理的委托进行解包。 您应在 Unsubscribe 实现中使用此方法。

protected:
 static Delegate ^ RemoveCallback(Delegate ^ existing, Delegate ^ toRemove);

protected static Delegate RemoveCallback (Delegate existing, Delegate toRemove);

static member RemoveCallback : Delegate * Delegate -> Delegate

Protected Shared Function RemoveCallback (existing As Delegate, toRemove As Delegate) As Delegate

参数

existing

Delegate

要从中移除回调的现有委托。

toRemove

Delegate

要移除的回调。

返回

Delegate

返回 Delegate，这是要分配给现有委托的新值。