Reactive Extensions for .NET (Rx) in WPF - MVVM

Question

I am using Reactive extensions for NET (Rx) with Caliburn.Micro in my WPF app. I\'m trying to port my WPF app to use an MVVM architecture and I need to monitor changes in th

Answer 1

Add a Nick property to your ViewModel and implement INotifyPropertyChanged. Then you can do this

Observable.FromEventPattern(this, "PropertyChanged")
          .Where(e => e.EventArgs.PropertyName == "Nick")
          .Select(_ => this.Nick)
          .Where(text => text.Length > 3)
          //Subscribe will call LoadUser, no need for the extra Do(...)
          .Throttle(TimeSpan.FromSeconds(3000))
          .Subscribe(LoadUser);  

and then your XAML would be something like this