You are able to implement this filter to a selected action, a controller, or globally across all controllers. In this article, we utilize it to the house Controller only. Next, modify the house Controller as follows:
Execution of Outcome: The await upcoming() call is essential. This line palms over Handle to the subsequent filter in the pipeline, or if there aren't any even further filters, it executes the motion final result.
The framework supplies an summary ResultFilterAttribute that could be subclassed. The ResponseHeaderAttribute class revealed Earlier is definitely an example of a final result filter attribute.
Filters absolutely are a significant matter—I only had room for a number of illustrations in the following paragraphs. You are able to check out the official documentation on docs.asp.Internet To find out more about filters and tests ASP.NET Main apps.
To handle an exception, established the ExceptionHandled home to true or assign The end result property. This stops propagation with the exception. An exception filter won't be able to change an exception into a "achievement". Only an motion filter can do this.
RouteData) to point which perspective to return. A fresh ViewDataDictionary is initialized Together with the product point out and product, allowing the check out to Screen validation glitches.
After the MVC middleware normally takes around, it phone calls into many different filters at diverse factors inside its action invocation pipeline.
Resource filters are practical to small-circuit almost all of the pipeline. One example is, a caching filter filters in asp.net mvc can stay away from the rest of the pipeline on the cache strike.
The Authorization filters efficiency measure lifeless Preliminary. This filter aids us to workout whether the consumer is allowed for the present ask for.
The kind of end result staying executed relies on the action. An motion returning a see contains all razor processing as Section of the ViewResult remaining executed. An API method may well complete some serialization as Component of the execution of The end result. Learn more about motion effects.
Whenever we access this URL for The 1st time, we can begin to see the content is generated with The present timestamp. Then, for all subsequent access to the same URL, we’ll obtain a cached version from the useful resource.
Exception filters apply world wide policies to unhandled exceptions that arise ahead of the reaction human body has long been composed to.
implement both the IActionFilter or IAsyncActionFilter interface and their execution surrounds the execution of motion procedures. Action filters are perfect for any logic that should see the results of model binding, or modify the controller or inputs to an motion approach. Additionally, action filters can perspective and immediately modify the results of an action strategy.
Final result filters comprise logic that's executed just before and after a view result's executed. Such as, you might like to modify a check out outcome correct before the perspective is rendered on the browser.