在ASP.NET中没有Web服务的自动完成文本框

Question

I am trying to set autocomplete on textbox. I have used this example: http://sapnashukla.blogspot.com/2014/05/to-create-autocomplete-textbox-without.html

I can't get a result. When I trying to type text I am getting this result after TextBox:

Type test
<
!
D
O
C
T
Y
P
E
h
t
m
l
<
>
and etc..

What I should do for it?

Somebody can explain and help me?

I have tried this too: aspx.cs

public partial class manage : System.Web.UI.Page {

protected void Page_Load(object sender, EventArgs e)
{

}

[System.Web.Script.Services.ScriptMethod()]
[System.Web.Services.WebMethod]
public static List<string> GetCompletionList(string prefixText, int count)
{
    return AutoFillProducts(prefixText);

}

private static List<string> AutoFillProducts(string prefixText)
{
    using (SqlConnection con = new SqlConnection())
    {
        con.ConnectionString = ConfigurationManager.ConnectionStrings["BNConnectionString"].ConnectionString;

        using (SqlCommand com = new SqlCommand())
        {
            com.CommandText = "select person from table where " + "person like @Search + '%'";

            com.Parameters.AddWithValue("@Search", prefixText);
            com.Connection = con;
            con.Open();
            List<string> countryNames = new List<string>();
            using (SqlDataReader sdr = com.ExecuteReader())
            {
                while (sdr.Read())
                {
                    countryNames.Add(sdr["person"].ToString());
                }
            }
            con.Close();
            return countryNames;


        }

    }
}  

}

aspx:

<%@ Page Title="" Language="C#" MasterPageFile="~/Site.Master" AutoEventWireup="true" CodeBehind="manage.aspx.cs" Inherits="XX.Mobilus.manage" %>
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="ajaxToolkit" %>


<asp:Content ID="Content1" ContentPlaceHolderID="MainContent" runat="server">

    <asp:TextBox ID="TextBox1" runat="server" AutoPostBack="true"></asp:TextBox>
    <ajaxToolkit:AutoCompleteExtender ID="TextBox1_AutoCompleteExtender" runat="server" MinimumPrefixLength="1" EnableCaching="true" CompletionSetCount="1" 
        CompletionInterval="1" ServiceMethod="GetCompletionList" UseContextKey="True" TargetControlID="TextBox1">
    </ajaxToolkit:AutoCompleteExtender>
</asp:Content>

Answer 1

the blog had only one(1) parameter from its function

, have you tried removing the ", int count"?