Defines the methods that are required for an exception filter.
Assembly: System.Web.Mvc (in System.Web.Mvc.dll)
In ASP.NET MVC versions 1 and 2, the OnException filters ran in forward order. In ASP.NET MVC version 3 and higher, the order is reversed. Exception filters in ASP.NET MVC have a similar behavior to exception handlers in the .NET Framework, which unwind from the inside out.