Csharp MAUI 如何使用 BindingPropertyChangedDelegate

我得了BindableProperty分，我要考do some stuff when the value changed分. 到目前为止，我得到了这样的结论:

public static readonly BindableProperty IsActiveLinkProperty =
    BindableProperty.Create(nameof(IsActiveLink), typeof(bool), typeof(LinkStackLayout), false);

public bool IsActiveLink
{
    get => (bool)GetValue(IsActiveLinkProperty);
    set => SetValue(IsActiveLinkProperty, value);
}

我读到过关于使用BindingPropertyChangedDelegate到notify changes of my property IsActiveLink的文章，我正在try 实现它.我不能把它写对，我不知道如何写它，它是工作的.如果能得到帮助就太好了.

我最后一次try : (error在第一行，"意想不到的 token ")

BindableProperty.BindingPropertyChangedDelegate<bool>(BindableObject bindable, bool oldValue, bool newValue);

public static readonly BindableProperty IsActiveLinkProperty =
    BindableProperty.Create(nameof(IsActiveLink), typeof(bool), typeof(LinkStackLayout), false, BindingMode.TwoWay, propertyChanged: (b, o, n) =>
    {
        var lsl = (LinkStackLayout)b;
        lsl.DoStuff(n);
    });

public bool IsActiveLink
{
    get => (bool)GetValue(IsActiveLinkProperty);
    set => SetValue(IsActiveLinkProperty, value);
}

public void DoStuff()
{
    var icon = IsActiveLink ? CursorIconEnum.Hand : CursorIconEnum.Arrow;
    this.SetCustomCursor(icon, Handler?.MauiContext);
}