摘要：using System;using System.Collections.Generic;using System.Linq;using System.Text;namespace ConsoleExample{ class 哥 { public virtual void draw() { Console.WriteLine("哥来做事,你们可以偷偷乐了"); } public void ff() { Console.WriteLine("哥的FF方法"); } } class 小弟 : 哥 { public overr... 阅读全文

摘要：create table tb(时间 datetime , 金额 int) insert into tb values('2007-1-1 10:00:23' , 8 )insert into tb values('2007-1-1 10:01:24' , 4 )insert into tb values('2007-1-1 10:05:00' , 2 )insert into tb values('2007-1-1 10:06:12' , 3 )insert into tb values('2007-1-1 10:08: 阅读全文