Ajax联动下拉框的实现例子

    public static DataSet GetDataSet(string sql,string aa)
    {
        MeetWeb.SqlDataBase a = new MeetWeb.SqlDataBase("server=localhost\\PMSERVER;uid=sa;pwd=sa;database=test");
        DataSet ds = new DataSet();
        ds=a.CreateSet(sql, aa);
        return ds;
    }

    [AjaxPro.AjaxMethod]
    public DataSet GetCityList(int id)
    {
        string sql = "select name from test where id='" + id + "'";
        return GetDataSet(sql,"test");
    }

}