Do you know how to load file CSS on Nop 2.0 by this?
@*This is used so that themes can inject content into the header*@ @Html.Partial("Head")
In the table Setting,
if storeinformationsettings.defaultstoretheme = DarkOrange, it will use ~/Themes/DarkOrange/Views/Shared/Head.cshtml if storeinformationsettings.defaultstoretheme = nopClassic, it will use ~/Themes/nopClassic/Views/Shared/Head.cshtml
Nop 2.0 uses a themable view engine that locates views using the current theme. So the Head view will be loaded according to the current theme. Therefore, anything you put into it gets into your html page when the theme is active.