IntraWeb 如何使用 POST/GET 傳遞參數

IntraWeb 的 WebApplication 要透過以前表單 POST/GET 的方式來傳遞參數該如何實現?

//// FROM METHOD="GET"
usrParam:=WebApplication.Request.QueryFields.Values['usr'];
pwdParam:=WebApplication.Request.QueryFields.Values['pwd'];

//// FORM METHOD="POST"
usrParam:=WebApplication.Request.ContentFields.Values['usr'];
pwdParam:=WebApplication.Request.ContentFields.Values['pwd'];