private void UpdateRankRow(FbTransaction trans, RankRowDataSet set, Int64 rankNo)
        {
            set.RankNo = rankNo;
            set.Delete(trans);

            InsertRankRow(trans, set, rankNo);
        }
        private void DeleteRank()
        {
            FbTransaction trans = AppRes.DB.BeginTrans();

            try
            {
                rankRowSet.RankNo = rankSet.RecNo;
                rankRowSet.Delete(trans);
                rankSet.Delete(trans);

                AppRes.DB.CommitTrans();
            }
            catch
            {
                AppRes.DB.RollbackTrans();
            }
        }