Provides a registration point for filters.
Assembly: System.Web.Mvc (in System.Web.Mvc.dll)
Multipleinstances can be registered.
In ASP.NET MVC versions 1 and 2, the only way to apply filters was to make a FilterAttribute attribute and apply that attribute to a controller or action method.
Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.