From the OnResourceExecuted strategy, if The existing request’s important isn’t presently in use, The existing Result is stored within the cache, to be used by long run requests.
A number of of your filter interfaces have corresponding characteristics that may be used as foundation lessons for personalized implementations.
When you've got operation you wish to operate in a lessen stage, and it doesn’t rely upon MVC-level context, think about using middleware. For those who have a tendency to possess a wide range of common logic in your controller actions, filters may possibly provide a way so that you can DRY them up to generate them simpler to maintain and examination.
To produce this a Performing example, allows modify the controller class by modifying the action strategy identified as Index employing the subsequent code.
If you run this software, you will notice that the browser is exhibiting the result of the Index motion system.
Action filters have logic that is executed in advance of and following a controller motion executes. You should utilize an motion filter, As an illustration, to change the view knowledge that a controller action returns.
As you can see, now the LogFilter course is derived from your ActionFilterAttribute summary class and we also override all 4 solutions. Now, it logs ahead of and following the action technique or final result executes.
Attributes let filters to just accept arguments, as proven in the previous illustration. Use the ResponseHeaderAttribute to some controller or motion process and specify the title and value of the HTTP header:
Middlewares: Middlewares are applied to your entire software’s ask for processing pipeline. They will handle requests and responses globally, regardless of the particular controller or action becoming invoked.
Characteristics allow filters to simply accept arguments, as shown in the instance higher than. You would add this attribute to the controller or motion system and specify the title and worth of the HTTP header you wished to incorporate towards the reaction:
See Title: It specifies The trail for the mistake check out (~/Sights/Shared/Error.cshtml). This makes sure that whenever an exception is managed by this filter, the person is redirected to a regular mistake web page, retaining a constant mistake-managing technique throughout the applying.
Address Validation: In the same way, it checks the Tackle home and provides a design mistake if it’s null or whitespace.
OnActionExecutionAsync operates right before any on the motion's filters. Code following a get in touch with to upcoming operates after the action's filters.
It is possible to implement IFilterFactory all on your own filters in asp.net mvc attribute implementations as another approach to developing filters: