JQGrid not reaching MVC controller

Question

Using FireBug I know the url is http://localhost:21962/Home/DynamicGridData/?nd=1250169669898&%5Fsearch=false&rows=10&page=1&sidx=Id&sord=desc

It is not making it to my HomeController. Here are the actions I have tried to make receive the JQGrid call

public ActionResult DynamicGridData(long nd, bool search, int rows, int page, string sidx, string sord)

public ActionResult DynamicGridData(int page, int rows, string search, string sidx, string sord)

public ActionResult DynamicGridData(string sidx, string sord, int page, int rows)