ASP.Net Core MVC provides support for uploading files through model binding that leverages the IFormFile interface. Recall that model binding maps data from an HTTP request to action method ...

File Providers in ASP.Net Core provide a layer of abstraction on the file system, allowing us to easily obtain file and directory information, watch for changes, and of course access physical files.

There is no need to pay a fee to access and upload a product database, though. Create your own product database and upload it by using a basic spreadsheet program.