Answer Posted / sravankumar

An action filter is an attribute that you can apply to a controller action -- or an entire controller -- that modifies the way in which the action is executed. The ASP.NET MVC framework includes several action filters.
• OutputCache – This action filter caches the output of a controller action for a specified amount of time.
• Handle Error – This action filter handles errors raised when a controller action executes.
• Authorize – This action filter enables you to restrict access to a particular user or role
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