//首先，获取NOD……

              DBDictionary NOD = (DBDictionary)trans.GetObject(db.NamedObjectsDictionaryId, OpenMode.ForWrite);

              //定义一个公司级别的字典

              DBDictionary acmeDict;

              try

              {

                     //如果ACME_DIVISION不存在，则转到catch块，这里什么也不做

                     acmeDict = (DBDictionary)trans.GetObject(NOD.GetAt("ACME_DIVISION"), OpenMode.ForRead);

              }

              catch

              {

                     //如果ACME_DIVISION不存在，则创建它并把它加入到NOD中……

                     acmeDict = new DBDictionary();

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