Auto Complete Service Asp.Net

* javascript *

<link href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.1/themes/base/jquery-ui.css"
        rel="stylesheet" type="text/css" />

    <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>

    <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.1/jquery-ui.min.js"></script>
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* JavaScript Function *

<script type="text/javascript">
    
$(function() {
    $(".tb").autocomplete({
        source: function(request, response) {
            $.ajax({
                url: "Report/AuroCompleteService.asmx/GetMemberName",
                data: "{ 'MemberName': '" + request.term + "' }",
                dataType: "json",
                type: "POST",
                contentType: "application/json; charset=utf-8",
                dataFilter: function(data) { return data; },
                success: function(data) {
                    response($.map(data.d, function(item) {
                        return {
                            value: item
                           
                        }
                    }))
                },
                error: function(XMLHttpRequest, textStatus, errorThrown) {
                    alert(textStatus);
                }
            });
        },
        minLength: 2
    });
});
    </script>
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* Html Code *

<div class="demo">
        <div class="ui-widget">
            <label for="tbAuto">
                Enter Email:
            </label>
            <asp:TextBox ID="tbAuto" class="tb" runat="server">
            </asp:TextBox>
        </div>
    </div>

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* Add Web Service file*

AuroCompleteService.cs 
Put below Code in this file

[WebMethod]
    [ScriptMethod(ResponseFormat = ResponseFormat.Json)]
    public string[] GetMemberName(string MemberName)
    {
        DataTable _dtMemberName = SBusinessLayer.Member.GetAllProfile(0, MemberName);
        string[] _MemberName = new string[0];
        if (_dtMemberName.Rows.Count > 0)
        {
            //return _dtMemberName.Rows[0][0].ToString();
            int _i = 0;
            foreach (DataRow _drMemberName in _dtMemberName.Rows)
            {
                Array.Resize<string>(ref _MemberName, _i + 1);
                _MemberName.SetValue(_drMemberName["MemberName"], _i);
                _i = _i + 1;

            }
            return _MemberName;
        }
        else
        {
            return _MemberName;
        }
    }
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