'公共事件PropertyChanged是事件，不能直接调用使用aRaiseEvent

Question

  

这里我实现了INotifyPropertyChanged

Public Event PropertyChanged As PropertyChangedEventHandler Implements INotifyPropertyChanged.PropertyChanged


    Private Function RaisePropertyChanged() As Action(Of PropertyChangedEventArgs)
       Return Function(args)   IIf(PropertyChanged.Invoke, Me, args)
    End Function