<PackageReference Include="System.Reactive" Version="6.1.0-preview.9" />

System.Reactive.Linq.ControlObservable

public static class ControlObservable
Provides a set of static methods for subscribing to IObservables using Windows Forms controls.
namespace System.Reactive.Linq { public static class ControlObservable { public static IObservable<TSource> SubscribeOn<[System.Runtime.CompilerServices.Nullable(2)] TSource>(this IObservable<TSource> source, Control control); public static IObservable<TSource> ObserveOn<[System.Runtime.CompilerServices.Nullable(2)] TSource>(this IObservable<TSource> source, Control control); } }