Autocomplete in MVC4 using Json

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MVC

Hi..i am beginner in mvc. am trying to set autocomplete a textbox in mvc4 razor.. my project done by using entity frame work model... i want to autocomplete my textbox that refers from a table of all columns values.. my issue is am only getting single column values. i want to know how to get all value from a table( all columns values) in textbox during autocomplete section. kindly help me to fix this. thanks


my code is:

public JsonResult Getbusiness(string term)
{
MvcApplication1Entities1 db = new MvcApplication1Entities1();
List<string> business;
{
business = db.tblBusinessCategories.Where(x => x.BusinessName.StartsWith(term))
.Select(y => y.BusinessName).ToList();
}
return Json(business, JsonRequestBehavior.AllowGet);
}