网上演练贵港万达广场(人员密集)
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#if NET20 || NET30 || NET35 || !NET_4_6
namespace System
{
/// <summary>Defines a provider for push-based notification.</summary>
/// <typeparam name="T">The object that provides notification information.</typeparam>
#if NETCF
public interface IObservable<T>
#else
public interface IObservable<out T>
#endif
{
/// <summary>Notifies the provider that an observer is to receive notifications.</summary>
/// <returns>A reference to an interface that allows observers to stop receiving notifications before the provider has finished sending them.</returns>
/// <param name="observer">The object that is to receive notifications.</param>
IDisposable Subscribe(IObserver<T> observer);
}
}
#endif