IObserver<T>.OnError Method
[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]
Notifies the observer that an exception has occurred in processing the observable sequence.
Assembly: mscorlib (in mscorlib.dll)
Although exception is an object that is derived from System.Exception, it does not necessarily represent an exception that is thrown by the provider. It can also represent a routine or expected error condition, such as data that is missing or unavailable. The OnError(Exception) method should be seen as informational, and the provider should not expect the observer to provide error handling.