摘要:
1、ArrarList 转换为 string[] : ArrayList list = new ArrayList(); list.Add("aaa"); list.Add("bbb"); //转换成数组 string[] arrString = (string[])list.ToArray(typeof( string)) ; 2、string[] 转换为 ArrarList : ArrayList list = new ArrayList(new string[] { "aaa", "bbb" }); 3、Ar 阅读全文
摘要:
select itemCode,sum(generateMoney) as totalmoney from inf_balance where vehiclecode='VC12114257' group by ItemCode使用groupby 阅读全文