c# - 有没有一种方法可以使用 Reactive UI 订阅所有分层属性更改？

Question

引用问题:( Is there a pattern for subscribing to hierarchical property changes with Reactive UI? )

我目前在我的父 react 对象中有一个子 react 对象。

public class Child : ReactiveObject
{
 private string propertyX
 public string PropertyX
    {
        get { return this.propertyX; }
        set { this.RaiseAndSetIfChanged(x => x.PropertyX, ref this.propertyX, value); }
    }

 private string propertyY
 public string PropertyY
    {
        get { return this.propertyY; }
        set { this.RaiseAndSetIfChanged(x => x.PropertyY, ref this.propertyY, value); }
    }
}

public class Parent: ReactiveObject
{

 public Parent(Child child)
 {
   Child = child;
   this.WhenAny(x => x.Child.PropertyX, x => x.Value).Subscribe(x => raisePropertyChanged("Child"));
 }

 private Child child
 public Child Child
    {
        get { return this.child; }
        set { this.RaiseAndSetIfChanged(x => x.Child, ref this.child, value); }
    }
}

我的问题是我必须写:

this.WhenAny(x => x.Child.PropertyX, x => x.Value).Subscribe(x => raisePropertyChanged("Child"));

每个子属性？

我需要这样做的原因是因为我的 DevExpress 网格不会因为嵌套属性绑定(bind)而更新。

<dxg:GridColumn x:Key="PropertyX" Header="PropertyX" FieldName="Child.PropertyX" />

Answer 1

所以，这有点 hack，但您始终可以“转发”属性:

this.WhenAny(x => x.Child.PropertyX, x => x.Value).ToProperty(this, x => x.PropertyXFromChild, out propertyXFromChild);