简单学生图书管理系统

简单学生图书管理系统

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Data.SqlClient;

namespace libmanagersys
{
    public partial class changemm : Form
    {
        public changemm（）
        {
            InitializeComponent（）;
        }

        private void button1_Click（object sender EventArgs e）
        {
            if （textBox1.Text == ““）
            { MessageBox.Show（“请输入原密码：“ “提示“）; textBox1.Focus（）; }
            else if （textBox2.Text == ““）
            { MessageBox.Show（“请输入新密码：“ “提示“）; textBox2.Focus（）; }
            else if （textBox3.Text == ““）
            { MessageBox.Show（“请确认新密码：“ “提示“）; textBox3.Focus（）; }
      

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2016-08-15 09:04  libmanagersys\
     目录           0  2016-08-15 10:33  libmanagersys\libmanagersys\
     文件         881  2016-08-15 09:04  libmanagersys\libmanagersys.sln
     文件       25600  2016-08-15 15:34  libmanagersys\libmanagersys.suo
     文件         416  2016-08-15 09:40  libmanagersys\libmanagersys\app.config
     目录           0  2016-08-15 09:07  libmanagersys\libmanagersys\bin\
     目录           0  2016-08-15 10:07  libmanagersys\libmanagersys\bin\Debug\
     文件      158208  2016-08-15 15:16  libmanagersys\libmanagersys\bin\Debug\libmanagersys.exe
     文件         416  2016-08-15 09:40  libmanagersys\libmanagersys\bin\Debug\libmanagersys.exe.config
     文件      321024  2016-08-15 15:16  libmanagersys\libmanagersys\bin\Debug\libmanagersys.pdb
     文件       11600  2016-08-15 15:32  libmanagersys\libmanagersys\bin\Debug\libmanagersys.vshost.exe
     文件         416  2016-08-15 09:40  libmanagersys\libmanagersys\bin\Debug\libmanagersys.vshost.exe.config
     文件         490  2012-06-06 02:06  libmanagersys\libmanagersys\bin\Debug\libmanagersys.vshost.exe.manifest
     目录           0  2016-08-15 09:07  libmanagersys\libmanagersys\bin\Release\
     文件        2592  2016-08-15 15:16  libmanagersys\libmanagersys\changemm.cs
     文件        6461  2016-08-15 11:12  libmanagersys\libmanagersys\changemm.Designer.cs
     文件        5817  2016-08-15 11:12  libmanagersys\libmanagersys\changemm.resx
     文件        2505  2016-08-15 15:34  libmanagersys\libmanagersys\land.cs
     文件        5762  2016-08-15 10:27  libmanagersys\libmanagersys\land.Designer.cs
     文件        5817  2016-08-15 10:27  libmanagersys\libmanagersys\land.resx
     文件        4951  2016-08-15 10:38  libmanagersys\libmanagersys\libmanagersys.csproj
     文件      498880  2016-08-15 09:40  libmanagersys\libmanagersys\libraryDataSet.Designer.cs
     文件           3  2016-08-15 09:40  libmanagersys\libmanagersys\libraryDataSet.xsc
     文件      104681  2016-08-15 09:40  libmanagersys\libmanagersys\libraryDataSet.xsd
     文件           3  2016-08-15 09:40  libmanagersys\libmanagersys\libraryDataSet.xss
     文件        1636  2016-08-15 15:10  libmanagersys\libmanagersys\main.cs
     文件       10541  2016-08-15 15:12  libmanagersys\libmanagersys\main.Designer.cs
     文件        6015  2016-08-15 15:10  libmanagersys\libmanagersys\main.resx
     目录           0  2016-08-15 09:04  libmanagersys\libmanagersys\obj\
     目录           0  2016-08-15 09:04  libmanagersys\libmanagersys\obj\x86\
     目录           0  2016-08-15 15:16  libmanagersys\libmanagersys\obj\x86\Debug\
............此处省略20个文件信息