教室及会议室预约系统C#小程序，课堂作业

教室及会议室预约系统（C#小程序，课堂作业） 可以实现教室的预约，时段分为2个小时一段 可以预约多个时段，也可以取消预约，取消时需要输入预约时输入的密码。

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.IO;
using System.Data.SqlClient;
using System.Security.AccessControl;

namespace chooseRoom
{
    public partial class Form_index : Form
    {
        bool exits = false;
        string userid = ““;
        string filename = ““;

        public Form_index（）
        {
            InitializeComponent（）;
        }

        private void Form_index_Load（object sender EventArgs e）
        {
            readAllFile（）;

            List initTimeList = new List（）;
            initTimeList.Add（“...“）;
            initTimeList.Add（“08:00-10:00“）;
            initTimeList.Add（“10:00-12:00“）;
            initTimeList.Add（“12:00-14:00“）;
            initTimeList.Add（“14:00-16:00“）;
            initTimeList.Add（“16:00-18:00“）;
            initTimeList.Add（“18:00-20:00“）;
            initTimeList.Add（“20:00-22:00“）;
            comboBox_time.DataSource = initTimeList;

            string logname = ““;
            logname = System.Environment.GetFolderPath（Environment.SpecialFolder.MyDocuments） + “\\教室及会议室预约系统“;
            if （Directory.Exists（logname） == false）//如果不存在就创建file文件夹
            {
                Directory.CreateDirectory（logname）;
            }
            logname += “\\roomItem.txt“;
            if （File.Exists（@logname） == false）
            {
                MessageBox.Show（“感谢您使用 教室/会议室 预约系统！“ “欢迎！“）;
                File.Copy（“roomItem.txt“ logname）;
            }

            List initItemList = new List（）;
            try
            {
                FileStream fs = File.Open（logname FileMode.Open FileAccess.Read）;
                StreamReader sr = new StreamReader（fs Encoding.UTF8）;
                String line;
                while （（line = sr.ReadLine（）） != null）
                {
                    initItemList.Add（line.ToString（））;
                }
                fs.Close（）;
            }
            catch （Exception error）
            {
                Console.WriteLine（error.Message）;
                //Message返回异常对象中包含的错误信息 
            }
            comboBox_item.DataSource = initItemList;
        }

        private void userClear（）
        {
            textBox_username.Text = null;
            textBox_usertel.Text = null;
            textBox_userid.Text = null;
        }

        private void save_log（）
        {
            if （textBox_username.Text.Length < 1 || textBox_usertel.Text.Length < 1 || textBox_userid.Text.Length < 1）
            {
                MessageBox.Show（“申请人、申请人电话及申请人证件号不允许为空！“ “警告！“）;
                return;
            }
            else {
                int time = 0;
                if （“...“ == comboBox_time.Text）
                {
                    MessageBox.Show（“请选择申请的时间段！“

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2015-11-08 22:09  cs_roomChoose\
     目录           0  2015-11-08 18:50  cs_roomChoose\chooseRoom\
     目录           0  2015-11-08 19:07  cs_roomChoose\chooseRoom\chooseRoom\
     文件        9826  2015-11-08 21:36  cs_roomChoose\chooseRoom\chooseRoom\Form_index.Designer.cs
     文件       11351  2015-11-08 22:06  cs_roomChoose\chooseRoom\chooseRoom\Form_index.cs
     文件        5817  2015-11-08 21:36  cs_roomChoose\chooseRoom\chooseRoom\Form_index.resx
     文件         507  2015-11-08 18:51  cs_roomChoose\chooseRoom\chooseRoom\Program.cs
     目录           0  2015-11-08 18:50  cs_roomChoose\chooseRoom\chooseRoom\Properties\
     文件        1450  2015-11-08 18:50  cs_roomChoose\chooseRoom\chooseRoom\Properties\AssemblyInfo.cs
     文件        2850  2015-11-08 18:50  cs_roomChoose\chooseRoom\chooseRoom\Properties\Resources.Designer.cs
     文件        5612  2015-11-08 18:50  cs_roomChoose\chooseRoom\chooseRoom\Properties\Resources.resx
     文件        1097  2015-11-08 18:50  cs_roomChoose\chooseRoom\chooseRoom\Properties\Settings.Designer.cs
     文件         249  2015-11-08 18:50  cs_roomChoose\chooseRoom\chooseRoom\Properties\Settings.settings
     目录           0  2015-11-08 18:51  cs_roomChoose\chooseRoom\chooseRoom\bin\
     目录           0  2015-11-08 20:55  cs_roomChoose\chooseRoom\chooseRoom\bin\Debug\
     文件          42  2015-11-08 20:53  cs_roomChoose\chooseRoom\chooseRoom\bin\Debug\2015110839535.crl
     文件          33  2015-11-08 20:55  cs_roomChoose\chooseRoom\chooseRoom\bin\Debug\201511087大学生活动中心.crl
     文件       15360  2015-11-08 20:59  cs_roomChoose\chooseRoom\chooseRoom\bin\Debug\chooseRoom.exe
     文件       32256  2015-11-08 20:59  cs_roomChoose\chooseRoom\chooseRoom\bin\Debug\chooseRoom.pdb
     文件       11600  2015-11-08 21:01  cs_roomChoose\chooseRoom\chooseRoom\bin\Debug\chooseRoom.vshost.exe
     文件         109  2015-11-08 19:10  cs_roomChoose\chooseRoom\chooseRoom\bin\Debug\roomItem.txt
     目录           0  2015-11-08 21:34  cs_roomChoose\chooseRoom\chooseRoom\bin\Release\
     文件       15360  2015-11-08 22:06  cs_roomChoose\chooseRoom\chooseRoom\bin\Release\chooseRoom.exe
     文件       30208  2015-11-08 22:06  cs_roomChoose\chooseRoom\chooseRoom\bin\Release\chooseRoom.pdb
     文件       11600  2015-11-08 22:08  cs_roomChoose\chooseRoom\chooseRoom\bin\Release\chooseRoom.vshost.exe
     文件         490  2012-06-06 02:06  cs_roomChoose\chooseRoom\chooseRoom\bin\Release\chooseRoom.vshost.exe.manifest
     文件         109  2015-11-08 19:10  cs_roomChoose\chooseRoom\chooseRoom\bin\Release\roomItem.txt
     文件        3704  2015-11-08 18:52  cs_roomChoose\chooseRoom\chooseRoom\chooseRoom.csproj
     目录           0  2015-11-08 18:50  cs_roomChoose\chooseRoom\chooseRoom\obj\
     目录           0  2015-11-08 21:01  cs_roomChoose\chooseRoom\chooseRoom\obj\x86\
     目录           0  2015-11-08 20:59  cs_roomChoose\chooseRoom\chooseRoom\obj\x86\Debug\
............此处省略85个文件信息