jl_car_massage.cs

此系统开发了一个公交车管理系统。系统根据权限的不同

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

namespace CarManage
{
    public partial class JL_Car_Massage : Form
    {
        public JL_Car_Massage()
        {
            InitializeComponent();
        }
        #region 关闭该窗体
        private void label19_Click_2(object sender, EventArgs e)
        {
            this.Close();
        }
        #endregion
        #region  创建gridviewcar()方法
        private void gridviewcar()
        {
            string CarNumber = this.textCarNumber.Text.ToString().Trim();
            //调用config配置文件对象dl连接对象
            string dl = ConfigurationManager.AppSettings["sqlString"];
            //创建connection对象con进行连接
            SqlConnection con = new SqlConnection(dl);
            //打开连接
            con.Open();
            //创建sql语句将信息从库中调出
            string sql = "select car_number as 车牌号,car_buytime as 购买时间,car_rank as 品牌,car_fee as 养路费,car_feestart as 起始时间,car_feeend as 结束时间,car_insurance as 保险费,car_instart as 起始时间,car_inend as 结束时间,car_remark as 备注 from db_car ";
            //创建执行对象cmd
            SqlCommand cmd = new SqlCommand(sql, con);
            //创建读取器对象sdr
            SqlDataAdapter sdr = new SqlDataAdapter();
            //sdr的查询方法为cmd
            sdr.SelectCommand = cmd;
            //创建一个dataset容器
            DataSet ds = new DataSet();
            //填充数据ds
            sdr.Fill(ds);
            //绑定datagriview数据源为ds
            this.GridView_Car.DataSource = ds.Tables[0].DefaultView;
            //关闭连接
            con.Close();
        }
       #endregion
        #region  创建gridviewcar1()方法
        private void gridviewcar1()
        {
            string CarNumber = this.textCarNumber.Text.ToString().Trim();
            //调用config配置文件对象dl连接对象
            string dl = ConfigurationManager.AppSettings["sqlString"];
            //创建connection对象con进行连接
            SqlConnection con = new SqlConnection(dl);
            //打开连接
            con.Open();
            //创建sql语句将信息从库中调出
            string sql = "select car_number as 车牌号,car_buytime as 购买时间,car_rank as 品牌,car_fee as 养路费,car_feestart as 起始时间,car_feeend as 结束时间,car_insurance as 保险费,car_instart as 起始时间,car_inend as 结束时间,car_remark as 备注 from db_car ";
            //创建执行对象cmd
            SqlCommand cmd = new SqlCommand(sql, con);
            //创建读取器对象sdr
            SqlDataAdapter sdr = new SqlDataAdapter();
            //sdr的查询方法为cmd
            sdr.SelectCommand = cmd;
            //创建一个dataset容器
            DataSet ds = new DataSet();
            //填充数据ds
            sdr.Fill(ds);
            //绑定datagriview数据源为ds
            this.GridView_Car.DataSource = ds.Tables[0].DefaultView;
            //关闭连接
            con.Close();
        }
                #endregion
        #region 添加按钮
        private void btnCarAdd_Click(object sender, EventArgs e)
        {
                //定义CarNumber，BuyTime，Rank，LoadMoney，SafeMoney（要输入的内容控件）
            string CarNumber = this.textCarNumber.Text.ToString().Trim();
            DateTime BuyTime = Convert.ToDateTime(this.dateTime_BuyTime.Value.ToShortDateString());
            string Rank = this.textRank.Text.ToString().Trim();
            string LoadMoney = this.domainLoadMoney.Text.ToString().Trim();
            DateTime LoadFrist = Convert.ToDateTime(this.dateTime_LoadFrist.Value.ToShortDateString());
            DateTime LoadLast = Convert.ToDateTime(this.dateTime_LoadLast.Value.ToShortDateString());
            string SafeMoney = this.domainUpDown1.Text.ToString().Trim();
            DateTime baoxianFirst = Convert.ToDateTime(this.dateTime_baoxianFirst.Value.ToShortDateString());
            DateTime baoxianLast = Convert.ToDateTime(this.dateTime_baoxianLast.Value.ToShortDateString());
            string Remark = this.textCarRemark.Text.ToString().Trim();
            if (CarNumber != "")
            {
                if (Rank != "")
                {
                    if (LoadMoney != "")
                    {
                        if (SafeMoney != "")
                        {
                            if (Remark != "")
                            {
                                //调用config配置文件对象dl连接对象
                                string dl = ConfigurationManager.AppSettings["sqlString"];
                                //创建connection对象con进行连接
                                SqlConnection con = new SqlConnection(dl);
                                //打开连接
                                con.Open();
                                //创建sql语句将信息入库          
                                string sql1 = "select car_number from db_car where car_number = '" + CarNumber + "'";
                                //创建执行对象cmd
                                SqlCommand cmd = new SqlCommand(sql1, con);
                                //返回受影响的数据
                                SqlDataReader dr = cmd.ExecuteReader();
                                if (dr.Read())
                                {
                                    MessageBox.Show("该车号已经存在");
                                }
                                else
                                {
                                    //关闭datareader
                                    dr.Close();
                                    string sql = "insert into db_car(car_number,car_buytime,car_rank,car_fee,car_insurance,car_remark,car_feestart,car_feeend,car_instart,car_inend)values('" + CarNumber + "','" + BuyTime + "','" + Rank + "','" + LoadMoney + "','" + SafeMoney + "','" + Remark + "','" + LoadFrist + "','" + LoadLast + "','" + baoxianFirst + "','" + baoxianLast + "')";
                                    //创建执行对象cmd1
                                    SqlCommand cmd1 = new SqlCommand(sql, con);
                                    //返回受影响的数据
                                    cmd1.ExecuteNonQuery();
                                    //调用gridviewcar方法
                                    this.gridviewcar();
                                    con.Close();
                                    MessageBox.Show("添加成功");
                                }
                                this.textCarNumber.Clear();
                                this.textCarRemark.Clear();
                                this.textRank.Clear();
                                this.domainLoadMoney.Clear();
                                this.domainUpDown1.Clear();
                                this.gridviewcar();
                                con.Close();
                                GridView_Car.Columns[0].Width = 75;
                                GridView_Car.Columns[1].Width = 100;
                                GridView_Car.Columns[2].Width = 70;
                                GridView_Car.Columns[3].Width = 70;
                                GridView_Car.Columns[4].Width = 70;
                                GridView_Car.Columns[5].Width = 150;
                            }
                            else
                            {
                               
                              MessageBox.Show("备注不能为空 ");

                            }

                        }
                        else
                        {
                            MessageBox.Show("保险费不能为空 ");
                        }
                    }
                    else
                    {
                        MessageBox.Show("养路费不能为空");
                    }

                }
                else
                {
                    MessageBox.Show("品牌不能为空");
                }
               
            }
            else
            {
                MessageBox.Show("车牌号不能为空");
            }
            
        }
        #endregion
        #region 查询按钮
        private void btnCarCheck_Click(object sender, EventArgs e)
        {
            string sqlstr ="select car_number as 车牌号,car_buytime as 购买时间,car_rank as 品牌,car_fee as 养路费,car_insurance as 保险费,car_remark as 备注 from db_car where 1 = 1 ";
            //定义变量
            string CheckCarKinds = this.textCheckCarKinds.Text.ToString().Trim();
            string CheckCarNumber = this.textCheckCarNumber.Text.ToString().Trim();
            DateTime CheckBuyTime = Convert.ToDateTime(this.dateTimeCheckBuyTime.Value);
            //调用config配置文件对象dl连接对象
            string dl = ConfigurationManager.AppSettings["sqlString"];
            //创建connection对象con进行连接
            SqlConnection con = new SqlConnection(dl);
            //打开连接