Autocomplete Object or property not defined

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jQuery

MVC4

<pre>

--I am trying the below program. But I am getting error in jquery. Kindly help me.

---controller

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using autocomplete.Models;

namespace autocomplete.Controllers
{
    public class HomeController : Controller
    {
        public ActionResult Index2()
        {
           
            return View();
        }

        public JsonResult Employeename(string name)
        {
 
             Employee Emp = new Employee();

            List<Employee> EmployeeList = new List<Employee>();

            EmployeeList.Add(new Employee { EmployeeNames = "Anurag", EmployeeId = 11 });
            EmployeeList.Add(new Employee { EmployeeNames = "Abhi", EmployeeId = 12 });
            EmployeeList.Add(new Employee { EmployeeNames = "Anupama", EmployeeId = 13 });
            EmployeeList.Add(new Employee { EmployeeNames = "Abhishek", EmployeeId = 114 });
            EmployeeList.Add(new Employee { EmployeeNames = "Anirudh", EmployeeId = 23 });
            EmployeeList.Add(new Employee { EmployeeNames = "Bibek", EmployeeId = 234 });

            var a = EmployeeList.Where(x=>x.EmployeeNames.StartsWith(name)).Select(x=>x.EmployeeNames).ToList();

            return Json(a, JsonRequestBehavior.AllowGet);

        }

    }
}

----view

@model  IEnumerable<autocomplete.Models.Employee>



<link href="~/Content/jquery-ui-1.10.4.custom.min.css" rel="stylesheet" />
<script src="~/Scripts/jquery-1.10.2.js"></script>
<script src="~/Scripts/jquery-ui-1.10.4.custom.min.js"></script>

<script type="text/javascript">

    $(document).ready(function ()
    {
        $("#txtsearch").autocomplete ({

            source: '@Url.Action("Employeename")'
            

        });

        });

</script>







<h2>Index1</h2>
<div style="font-family:Arial">

    @using (@Html.BeginForm())
    { 
    
    Name
    @Html.TextBox("SearchTerm", null, new { Id="txtsearch"})
    }

I am getting error
:::

Unhandled exception at line 50, column 9 in http://localhost:62008/Home/Index2

0x800a01b6 - Microsoft JScript runtime error: Object doesn't support property or method 'autocomplete'

::

----Kindly guide me where I am doing wrong.