It assumes you will be returning a certain design that can be transformed. In this article, the following course is inherited with the ActionFilterAttribute and overrides the OnActionExecuted process.
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To avoid needless processing, try to use filters only where They're genuinely required, Otherwise then stay away from making use of them.
ASP.NET MVC presents a straightforward approach to inject your piece of code or logic either in advance of or just after an motion is executed. That is obtained by decorating the controllers or actions with ASP.
Synchronous filters run before and right after their pipeline stage. By way of example, OnActionExecuting known as prior to the action strategy is termed. OnActionExecuted is referred to as once the motion method returns:
Location the Reaction: Right after logging the exception, the tactic proceeds to alter the person’s working experience by redirecting them into a generic error site. This can be done by placing context.Result to a different ViewResult:
With this particular pattern, there’s only one strategy to put into action, and function can be carried out in advance of or following the motion is executed by jogging it just before or after the simply call to following. Nonetheless, if you’re small-circuiting the filter by environment a context.Final result, you'll want to return without having contacting subsequent (if not you’ll get an exception).
Outcome. Throwing an exception within an OnActionExecuting strategy will even protect against execution on the action process and subsequent filters, but might be dealt with like a failure as opposed to effective final result.
Middlewares: Middlewares are placed on your complete software’s ask for processing pipeline. They are able to manage requests and responses globally, regardless of the precise controller or motion staying invoked.
The OnActionExecuted process is invoked after the action system has become executed. This technique is useful for the following purposes:
You could override the crafted-in ResultFilterAttribute to develop outcome filters. filters in asp.net mvc The AddHeaderAttribute course shown higher than is surely an illustration of a result filter.
Exception filters are used to globally tackle all unhandled exceptions that arise in the application.
// do some thing prior to the motion executes await up coming(); // do a little something after the motion executes
You could employ IFilterFactory yourself attribute implementations as An additional approach to building filters: