How to bind select element in jquery

Question

Hi,All

see my code a help to bind select element

[WebMethod(EnableSession = true)]

    public void GetTpoName()
    {

        SqlConnection con = null;
        string q = Context.Request.QueryString["q"];
        string rValue = string.Empty;
        try
        {
            SqlCommand cmd;
            con = new SqlConnection(Constants.SqlConnectionString);
            cmd = new SqlCommand("select UserId,Name from UserTable where OrganisationId=@id", con);
            cmd.Parameters.Add(new SqlParameter("@id", SqlDbType.SmallInt)).Value = q;
            con.Open();
            SqlDataReader dr = cmd.ExecuteReader(CommandBehavior.CloseConnection);
            while (dr.Read())
            {
                rValue += string.Format("{0}|{1}\n", dr["Name"], dr["Organisationid"]);
            }

            con.Close();
        }
        catch 
        {


        }
        finally
        {
            if (con != null)
            {
                con.Dispose();
            }
        }
        Context.Response.Write(rValue);

    }

<script src="scripts/jquery-1.3.2.min.js" type="text/javascript"></script>

<script type="text/javascript" charset="utf-8">
$(document).ready(function(){ 
$("#selecttpo").load("admin211181.asmx/GetTpoName",function(event,item){
$("#selecttpo").val(item[1]);
}); 
});

</script>


<title>Untitled Page</title>