Js处理DATASET

[Ajax.AjaxMethod()]
       public DataSet GetDataSet()
       {
           OleDbConnection conn = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=D:工作项目分析 estdb.mdb;Persist Security Info=True;");
           DataSet ds = new DataSet();
           try
           {
               OleDbCommand cmd = conn.CreateCommand();
               cmd.CommandText = "select * from t_name";
               cmd.CommandType = CommandType.Text;

               OleDbDataAdapter da = new OleDbDataAdapter(cmd);
               da.Fill(ds);
               return ds;
           }
           catch
           {
               conn.Close();
               throw;
           }
       }

 [Ajax.AjaxMethod()]
        public DataSet GetDataSet()
        {
            OleDbConnection conn = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=D:工作项目分析 estdb.mdb;Persist Security Info=True;");
            DataSet ds = new DataSet();
            try
            {
                OleDbCommand cmd = conn.CreateCommand();
                cmd.CommandText = "select * from t_name";
                cmd.CommandType = CommandType.Text;

                OleDbDataAdapter da = new OleDbDataAdapter(cmd);
                da.Fill(ds);
                return ds;
            }
            catch
            {
                conn.Close();
                throw;
            }
        }

 

<script language="JavaScript">

// var ds =test.GetDataTable().value;  //table数据源
//alert(ds.Rows[i].level2;




            function getDataSet()
            {
                var ds =test.GetDataSet().value;
                if(ds != null && typeof(ds) == "object" && ds.Tables != null)
                {
                    var s = new Array();
                    s[s.length] = "<table style='border: #000000 1px solid; color: #993333; font-family: 'Microsoft Sans Serif'; background-color: #ffff99;'>";

                    for(var i=0; i<ds.Tables[0].Rows.length; i++)
                    {
                        s[s.length] = "<tr>";
                        s[s.length] = "<td>" + ds.Tables[0].Rows[i].id + "</td>";
                        s[s.length] = "<td>" + ds.Tables[0].Rows[i].f_date + "</td>";
                        s[s.length] = "<td>" + ds.Tables[0].Rows[i].f_name + "</td>";
                        s[s.length] = "</tr>";
                    }

                    s[s.length] = "</table>";
                    document.getElementById("div1").innerHTML = s.join("");
                    }
                else
                {
                    alert("调用Ajax接口函数错误！");
                }
            }
        </script>