Facts About filters in asp.net mvc Revealed

Facts About filters in asp.net mvc Revealed

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This attribute accepts the type of the filter to operate as being a constructor parameter. One example is, to apply the CustomActionFilter to one motion approach, you’d generate:

In advance of End result Execution (OnResultExecuting): This process is executed just before the motion result's executed. You can use this technique to change the motion final result or insert supplemental processing just before the result is managed.

Exception is set to your non-null benefit When the action or possibly a subsequent motion filter threw an exception. Location Exception to null: Effectively handles an exception.

We could utilize filters within the controller level by decorating the controller While using the Filter attribute, as revealed in the beneath code. Once we utilize the Filter at the controller stage, it'll utilize to all the steps of that controller.

The OutputCache can be a built-in action filter attribute which can be placed on an motion process for which we want to cache the output. By way of example, the output of the next action technique will likely be cached for 100 seconds.

Exception - Non-null In case the motion or simply a previously run action filter threw filters in asp.net mvc an exception. Placing this assets to null: Successfully handles the exception.

Logging: It logs information concerning the motion, like the motion name, execution time, and the type of final result. This is often critical for debugging and monitoring the behavior of your World-wide-web software.

be reused outside of the ask for scope it was developed within just. The ASP.NET Main runtime would not ensure: That only one occasion of the filter will likely be developed.

Should not log steps or other framework activities. The created-in filters now log actions and framework occasions.

As found in the above screenshot, the stages of processing the motion are logged towards the Visual Studio output window.

Look at Name: It specifies the path to the error perspective (~/Views/Shared/Mistake.cshtml). This ensures that Each time an exception is handled by this filter, the consumer is redirected to an ordinary error website page, maintaining a regular mistake-handling approach throughout the application.

ActionExecutedContext.Exception is going to be set to some non-null price In the event the action or maybe a subsequent motion filter threw an exception. Environment ActionExecutedContext.Exception to null properly ‘handles’ an exception, and ActionExectedContext.End result will then be executed like it ended up returned from your motion process Ordinarily.

// do anything prior to the motion executes await following(); // do something following the motion executes

The subsequent example illustrates the buy by which filter solutions run for synchronous action filters: