Export Excel in ASP.NET MVC 5 (edit)
https://www.adambielecki.com/2013/05/exporting-data-to-excel-and-csv-in.html
https://www.c-sharpcorner.com/article/export-data-in-excel-file-with-asp-net-mvc/
https://www.c-sharpcorner.com/article/export-data-excel-in-asp-net-mvc/ (GOOD)
https://code.msdn.microsoft.com/vstudio/Export-DataSet-to-Excel-d555b6ba/ (GOOD)
https://www.aspsnippets.com/Articles/Export-to-Excel-in-ASPNet-MVC.aspx
