Get the URL base path

UrlBase.cs

var uri = HttpContext.Request.Url;
var urlBase = Url.Content("~/");
            
var urlHost = String.Format("{0}://{1}{2}", uri.Scheme, uri.Host, uri.Port != 80
    ? String.Format(":{0}", uri.Port)
    : String.Empty);

ViewBag.UrlBase = String.Format("{0}{1}", urlHost, urlBase);