genexus 中combox 如何關聯數據（從數據庫讀取數據）

創建一個變量&Combo,設置爲comboxit &Combo.clear() for each   option distinct   &Cnsg_Cod = Cnsg_Cod   &Cnsg_Desc = Cnsg_Desc   &combo.additem(&Cnsg_Cod,&Cnsg_Desc)  //  additem(代碼，描述) endfor  io

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