ASP 調用返回 DataSet 的 Web Service

WebServiceDemo.asmx
public class ServiceDemo : WebService
    {
        [WebMethod]
        public string HelloWorld(string ss)
        {
            return "Hello World,"+ss;
        }

        [WebMethod]
        public DataSet GetStudents()
        {
            DataTable dt=new DataTable();
            dt.Columns.Add("FID",typeof(string));
            dt.Columns.Add("FName",typeof(string));

            DataRow dr=dt.NewRow();
            dr["FID"]="123";
            dr["FName"]="wengmj";

            dt.Rows.Add(dr);

            DataRow dr1=dt.NewRow();
            dr1["FID"]="456";
            dr1["FName"]="cqm";
            dt.Rows.Add(dr1);

            DataSet ds=new DataSet();
            ds.Tables.Add(dt);
            return ds;

        }
    }

Test.asp

<% 

    SET objSoapClient = Server.CreateObject("MSSOAP.SoapClient30")
    
    objSoapClient.ClientProperty("ServerHTTPRequest") = True
        
    call objSoapClient.MSSoapInit("http://localhost/Fredoc.Web/ServiceDemo.asmx?WSDL")
        
    res = objSoapClient.HelloWorld("wengmj")    
        
    set stud=  objSoapClient.GetStudents()
    
    Set xmlDOC =CreateObject("MSXML2.DOMDocument.4.0")
    xmlDOC.loadXML(stud.item(1).xml)

    for each node in xmlDOC.firstChild.firstChild.childNodes
        for each inode in node.childNodes
            response.Write inode.text&"&nbsp;&nbsp;"
        next
        response.Write "<br>"
    next
    

%>