.net - 委托(delegate)们会导致内存泄漏吗？

Question

代表们会导致内存泄漏吗？

我的意思是，例如如果一个类A包含一个ADelegate，并且后者指向BMethod(属于B类)，这可以防止GC收集A类或B类吗？

如果是这样，我们如何“释放”代表(设置ADeletate = Nothing/null？)

您如何评价这一点:

//Class A Finalize, containing ADelegateInstance as ADelegate'
protected override void Finalize()
{
    ADelegateInstance = 
        (ADelegate)System.Delegate.RemoveAll(
            ADelegateInstance, ADelegateInstance);
    ADelegateInstance = null;
    base.Finalize();
}

'Class A Finalize, containing ADelegateInstance as ADelegate'
Protected Overrides Sub Finalize()
    ADelegateInstance = _ 
        CType(System.Delegate.RemoveAll(ADelegateInstance, ADelegateInstance), _ 
            ADelegate)
    ADelegateInstance = Nothing
    MyBase.Finalize()
End Sub

Answer 1

是的，除非您取消订阅该 Activity ，否则引用将保持 Activity 状态:

someObject.SomeEvent -= SomeDelegate;