Ajax.ActionLink not working, Response.IsAjaxRequest() is always false

Question

I have been googling/SO:ing this issue for a while and many seem to be sharing this, but I haven\'t found any successful solution to my problem.

Using MVC3 and Razor

Answer 1

Another IE-specific issue that can keep ActionLink from functioning correctly is covered here: ASP.NET MVC - Prevent Cache on Ajax.ActionLinks

Basically, IE sometimes caches Ajax GET requests, so setting the AjaxOption's HttpMethod to POST is a less fragile way to construct an ActionLink:

@Ajax.ActionLink(
       item.Name + " (Ajax link test)",
         "MyActionName",
         routeValues: new { id = item.Id },
         ajaxOptions: new AjaxOptions()
         {
              UpdateTargetId = "divToUpdate",
              InsertionMode = InsertionMode.Replace,
              HttpMethod = "POST"
         })