Partial Views with Validations

Question

public ActionResult VehicleLoanBasicDetailsSave(FormCollection form)

{

if (form["nameofapplicant"].Trim().Length == 0)

ModelState.AddModelError("Name", "Name is required");

return PartialView("_VehicleLoanBasicDetails");

}

In controller ,I wrote validations like that.But i need to display that errors .Can u tell me  how to display the errors