using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data.SqlClient;namespace 修改
{class Program{static void Main(string[] args){Console.Write("请输入要修改的成员姓名：");string name = Console.ReadLine();Console.Write("请输入要修改的成员的生日：");string bir = Console.ReadLine();//创建数据库连接类SqlConnection conn = new SqlConnection("server=.;database=Data1128;user=sa;pwd=123;");//编写连接字符串//创建数据库操作类,创建过程是与刚创建的连接对象匹配起来SqlCommand comm = conn.CreateCommand();//编写操作语句 TSQL语句comm.CommandText="update Users set birthday='"+bir+"' where usename='"+name+"'";conn.Open();int i = comm.ExecuteNonQuery();conn.Close();if (i > 0)Console.WriteLine("修改成功！");elseConsole.WriteLine("修改失败！");Console.ReadKey();}}
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data.SqlClient;namespace ConsoleApplication1
{class Program{static void Main(string[] args){//创建数据库连接类SqlConnection con = new SqlConnection("server=.;database=Data1128;user=sa;pwd=123;");//创建数据库操作类,创建过程是与刚创建的连接对象匹配起来SqlCommand com = con.CreateCommand();//编写操作语句 TSQL语句com.CommandText = "select code,usename,password,nick,sex,nation,class,(select nationname from Nation where nationcode=Users.nation) as 民族,(select classname from Class where classcode=Users.class) as 班级,birthday from Users";//
            con.Open();//读取操作，返回读取器对象SqlDataReader dr= com.ExecuteReader();if (dr.HasRows)//获取一个bool值，判断是否含有一行或多行
            {while (dr.Read())//获取一个bool值，前进到下一条记录
                {Console.WriteLine(dr["code"] + "\t" + dr["usename"] + "\t" + dr["password"] + "\t" + dr["nick"] + "\t" + (Convert.ToBoolean(dr["sex"]) ? "男" : "女") + "\t" + dr["民族"] + "\t" + dr["班级"] + "\t" + (Convert.ToDateTime(dr["birthday"]).ToShortDateString()));}}con.Close();Console.ReadLine();}}
}