C# .NET - Reactive extensions error

0
votes

I've a C# 4.0 class library projet in which I've referenced Reactive extensions dlls(2.2.5 version). I'm getting compilation errors as mentioned below.Could you advise please?

C# code:

var observable = System.Reactive.Linq.Observable.Empty<bool>();

            foreach (var modelParam in modelParams)
                observable = observable.Merge(modelParam.ObservePropertyChanged(p => p.IsDirty).Where(p => p));

*Error 522 'System.IObservable' does not contain a definition for 'Where' and no extension method 'Where' accepting a first argument of type 'System.IObservable' could be found (are you missing a using directive or an assembly reference?

Error 508 'System.IObservable' does not contain a definition for 'Where' and no extension method 'Where' accepting a first argument of type 'System.IObservable' could be found (are you missing a using directive or an assembly reference?)*

Thanks in advance.

1
c#system.reactive

1 Answers

5
votes

You need to import the namespace that defines the extension method:

using System.Reactive.Linq;