System.Reactive.IObserver<TValue, TResult>
Provides a mechanism for receiving push-based notifications and returning a response.
namespace System.
Reactive
{
public interface IObserver<[
System.
Runtime.
CompilerServices.
Nullable(
2)]
in TValue, [
System.
Runtime.
CompilerServices.
Nullable(
2)]
out TResult>
{
TResult OnNext(
TValue value);
TResult OnError(
Exception exception);
TResult OnCompleted();
}
}