private string GetParentBudgetBalance(string parentBudgetId) { string sql = string.Format("SELECT isnull(sum(Balance),0) totalBalance FROM vBudget_Department_List where ParentId={0} group by ParentId", parentBudgetId); DataTable tb = new Dianda.COMMON.pageControl().doSql(sql).Tables[0]; return(tb.Rows.Count > 0? tb.Rows[0]["totalBalance"].ToString() + "元" : "0元"); }