What are filters in MVC with example?

Filters in ASP.NET MVC

Filter Type	Interface	Description
Action	IActionFilter	These Runs before and after the action method.
Result	IResultFilter	Runs before and after the action result are executed.
Exception	IExceptionFilter	Runs only if another filter, the action method, or the action resultthrows an exception.

What is filter and types of filters in MVC?

The ASP.NET MVC framework supports four different types of filters − Authorization Filters − Implements the IAuthorizationFilter attribute. Action Filters − Implements the IActionFilter attribute. Result Filters − Implements the IResultFilter attribute. Exception Filters − Implements the IExceptionFilter attribute.

What are MVC action filters?

ASP.NET MVC provides Action Filters for executing filtering logic either before or after an action method is called. Action Filters are custom attributes that provide declarative means to add pre-action and post-action behavior to the controller’s action methods.

How many filters are there in ASP NET MVC?

The ASP.NET MVC framework provides five types of filters.

How many types of filters are there in MVC?

four different types
The ASP.NET MVC framework supports four different types of filters: Authorization filters – Implements the IAuthorizationFilter attribute. Action filters – Implements the IActionFilter attribute. Result filters – Implements the IResultFilter attribute.

What are different types of action filters?

Action Filters

• Output Cache − 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.

What are filters in asp net core?

Filters in ASP.NET Core allow code to run before or after specific stages in the request processing pipeline. Built-in filters handle tasks such as: Authorization, preventing access to resources a user isn’t authorized for.

What is bundling and Minifications in MVC?

Both bundling and minification are the two separate techniques to reduce the load time. The bundling reduces the number of requests to the Server, while the minification reduces the size of the requested assets.

What is caching in MVC?

Caching is used to improve the performance in ASP.NET MVC. Caching is a technique which stores something in memory that is being used frequently to provide better performance. OutputCheching will store the output of a Controller in memory and if any other request comes for the same, it will return it from cache result.

What is ViewBag and ViewData in MVC?

ViewData and ViewBag are used for the same purpose — to transfer data from controller to view. ViewData is nothing but a dictionary of objects and it is accessible by string as key. ViewData is a property of controller that exposes an instance of the ViewDataDictionary class. ViewBag is very similar to ViewData.