I'm using this code for autocomplete here it is not firing the service method

See more:

ASP.NET4

Admin/PatientAuto1.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="PatientAuto1.aspx.cs" Inherits="Admin_PatientAuto1" %>

<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="asp"%>





<title>









Admin/PatientAuto1.aspx.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;
using System.Web.Services;


public partial class Admin_PatientAuto1 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{

}
[WebMethod]
public static List<string> GetSearch(string term)
{
List<string> listPatientNames = new List<string>();

string cs = ConfigurationManager.ConnectionStrings["CredenceDBConn"].ConnectionString;
using (SqlConnection con = new SqlConnection(cs))
{
SqlCommand cmd = new SqlCommand("[dbo].[spGetPatientNames_Vamsi]", con);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add(new SqlParameter()
{
ParameterName = "@term",
Value = term
});
con.Open();
SqlDataReader rdr = cmd.ExecuteReader();
while (rdr.Read())
{
listPatientNames.Add(rdr["PatientName"].ToString());
}
}

return listPatientNames;
}
}

What I have tried:

service method is not firing ,tried using script service