Excel in ASP.NET MVC Core

http://www.talkingdotnet.com/import-export-xlsx-asp-net-core/

https://github.com/VahidN/EPPlus.Core

Upload File in Angular & ASP.NET Core MVC 

https://github.com/mikebrind/MVCCoreFileUpload

https://github.com/damienbod/AngularLocalizationAspNetCore