Sadly I found only one article about read/print excel in asp.net core 2.
This Article is about .NET Web APP, And I'm using .NET MVC.
I got in trouble at "OnPostImport" ActionResult.
I couldn't understand where to implement this code, and why he using this code in a class called "OnPostImport" and not a controller. (And where I would implement this in MVC)
Thanks for the help!