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[Source] ASP.NET Core (XIII) to determine whether it is an Ajax request or not

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Posted on 2022-3-31 19:30:16 | | | |
In previous ASP.NET MVC, you could use the Request extension method IsAjaxRequest() to determine if a request is an Ajax request. In ASP.NET Core, how can you tell if the request is an Ajax request or a direct URL accessed through the browser?

Determine if the request is an Ajax principle, judgeWhether the request header contains: X-Requested-With and the value is: XMLHttpRequest, as shown in the figure below:



So, the implementation code is as follows:

If we want to restrict the controller to allow certain methods to only be requested through AJAX, we can inheritActionMethodSelectorAttributefeature to implement the IsValidForRequest abstraction method, the code is as follows:

Then, add this feature to the controller method ifNon-Ajax requests this method will directly report a 404 Not found error！

review

ASP.NET Core (twelve) front-end JS, CSS bundling, and compression
https://www.itsvse.com/thread-10282-1-1.html

ASP.NET Core (XI) endpoint route adds middleware to display all DI services
https://www.itsvse.com/thread-10269-1-1.html

ASP.NET Detailed explanation of Configuration priorities in Core(10).
https://www.itsvse.com/thread-10265-1-1.html

ASP.NET Detailed explanation of the Middleware middleware of Core (9).
https://www.itsvse.com/thread-9647-1-1.html

ASP.NET Detailed explanation of Core Middleware
https://www.itsvse.com/thread-8126-1-1.html

ASP.NET pit of the default parameters of the Swagger UI in Core(8).
https://www.itsvse.com/thread-9640-1-1.html

ASP.NET Core (7) In-depth analysis of the framework source code
https://www.itsvse.com/thread-9601-1-1.html

ASP.NET Core (VI) DI manually obtains the method of injecting objects
https://www.itsvse.com/thread-9595-1-1.html

ASP.NET Core (five) is based on CAP distributed transactions
https://www.itsvse.com/thread-9593-1-1.html

ASP.NET Core(4) filter unified ModelState model validation
https://www.itsvse.com/thread-9589-1-1.html

ASP.NET Core (iii) Dynamically create instances using ActivatorUtilities
https://www.itsvse.com/thread-9488-1-1.html

ASP.NET Core (2) Restart the application by code
https://www.itsvse.com/thread-9480-1-1.html

ASP.NET Core (1) uses Redis caching
https://www.itsvse.com/thread-9393-1-1.html
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