web method problem

 hiii all,
please tell me what is wrong with this code...........
 
 /// <summary>
/// Summary description for Autocomplete
/// </summary>
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
// To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line.
 [System.Web.Script.Services.ScriptService]
public class Autocomplete : System.Web.Services.WebService {

    public Autocomplete () {

        //Uncomment the following line if using designed components
        //InitializeComponent();
    }

    [WebMethod]
    public string[] ProdCodeGet(string prefixText)
    {
    &nbs ...