absdb conn = dbconn.getdbconn();

                string strsql = "select 內容 from sys_dict where 分類名稱 = '角色管理'";

                oracledatareader oraread = conn.executereader(commandtype.text,strsql,null);

                while (oraread.read())
                ...{
                    listboxroles.items.add(oraread.getstring(0));
                }

                if (conn.open)
                ...{
                    conn.close();
                }
數據庫的連接自己更換一下。

combox的形式替換如下

dropdownlist.items.add(tempstr);