Authorization Filters :
These filters implement and make security decisions about
whether to execute an action method, such as performing authentication or
validating properties of the request.
Action Filters :
Action
Filters are attributes that can be applied either on a controller action method
or on a controller. When applied at the controller level, they are applicable
for all action methods with in that controller. Action Filters allow us to add,
pre and post processing logic to an action method. This means they allow us to
modify the way in which the action is executed.
Result Filters :
Result
filters are executed before or after generating the result for an action. The
Action Result type can be ViewResult, PartialViewResult, RedirectToRouteResult,
RedirectResult, ContentResult, JsonResult, FileResult and EmptyResult which
derives from the ActionResult class. Result filters are called after the Action
filters. The IResultFilter interface is used to create an Result Filter which
provides two methods OnResultExecuting and OnResultExecuted which will be
executed before or after generating the result for an action respectively.
Exception Filters :
Exception filters are executed when
exception occurs during the actions execution or filters execution. The
IExceptionFilter interface is used to create an Exception Filter which provides
OnException method which will be executed when exception occurs during the
actions execution or filters execution.
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