How to Restrict Downloading of Files From Unauthorized Users Using ASP.NET and C#

Sometimes there will be times where you need to save a file in your web host, but you don’t want it accessed by everyone. Like when you want an e-book be available only to the users that have subscribed to your website, they are the only people who can view and download the files.

If you want to restrict unauthorized access to your files, this article will show you a trick.

First, make the user login to the system, then add the .cs code as stated in the post, then add an error page so if the user is not authorized to access the file, they will be greeted with an error message.

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