CODEWITHSUNDEEP
c#wpfreactiveui
Carlos28
Carlos28

Reputation: 2411

ReactiveUI subscribe to property change in ReactiveList

There is any way of subscribing to any field changed in ReactiveList?

Lets say I have class:

public class A
{
        public SomeOtherClass Prop1 { get; set; }
        public SomeOtherClass Prop2 { get; set; }
}

And ViewModel:

public class MyViewModel
{
    private ReactiveList<A> elements;

    public MyViewModel()
    {
        elements = new ReactiveList<A>();
    }
}

This list is binded to DataGrid. What I want to do is something like WhenAnyValue but when Prop1 or Prop2 are changed in any A in elements.

Is there any way?

Upvotes: 0

Views: 1651

Answers (1)

mm8
mm8

Reputation: 169150

If you set the ChangeTrackingEnabled property of the ReactiveList<T> to true and raise the PropertyChanged event in the setters of the Prop1 and Prop2 properties you can subscribe to ItemChanged of the ReactiveList<T>:

public MyViewModel()
{
    elements = new ReactiveList<A>() { ChangeTrackingEnabled = true };
    elements.ItemChanged.Subscribe(args =>
    {
        A a = args.Sender;
        string changedProperty = args.PropertyName;
    });
}

Note that the A class must implement the INotifyPropertyChanged interface.

Upvotes: 4

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