Eric Vogel's articles on authentication (here and here) in ASP.NET Core show what you have to do in order to authenticate a user against a local database. At the end of that process, you're ready to ...
Eric Vogel follows up on his previous post on getting started with ASP.NET Core security. Now that .NET Core 3.0 is out, he shows how to upgrade the code from Part 1 to ASP.NET Core 3.0, put pages ...