What are the options to read/write files in .Net Core?
I am working on my first .Net Core app and looking for  File.Read*/File.Write* functions (System.IO from .Net) alternatives.
How to upload and download files in ASP.NET Core MVC. In an empty project, update the Startup class to add services and middleware for MVC. Add a Controller and action methods to upload and download the file. Add a Razor page with HTML form to upload a file.
Start Visual Studio. On the File menu, point to New, and then click Project. Click Visual C# Projects under Project Types, and then click Console Application under Templates. On the Debug menu, select Start to compile and to run the application.
Package: System.IO.FileSystem
System.IO.File.ReadAllText("MyTextFile.txt"); ? 
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