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 ...

Microsoft, after shipping Visual Studio 2019 for Mac v8.4 with support for ASP.NET Core Blazor Server applications last month, is now previewing the v8.5 series, adding new authentication templates ...