代码如下：
string ls_object
string ls_st_id
ls_object = string(dwo.name)
if ls_object = "b_class" then
open(w_st_ora) //关闭时用的close(st_ora)，在ST_ORA中有赋字符串给一个变量
ls_st_id = message.stringparm
if isnull(ls_st_id) then
ls_st_id = ""
end if
if ls_st_id <> "" then
parent.dw_1.setitem(1,"st_id",ls_st_id)
end if
return
end if
