DataRow[] dr = _deptCodeDt.Select(string.Format(" ward_code = ‘{0}‘", LocalSetting.WardCode));
                    if (dr.Length <= 0)
                        return;
                    DataTable tempT = new DataTable();
                    tempT = dr[0].Table.Clone();        //克隆表结构
                    DataSet tempDs = new DataSet();
                    tempDs.Tables.Add(tempT);          //添加到辅助数据集中
                    tempDs.Merge(dr);                  //利用数据集合并行集到表

                    deptCmBox.DataSource = tempDs.Tables[0];
                    deptCmBox.DisplayMember = "ward_name";
                    deptCmBox.ValueMember = "ward_code";