C#汽車租賃系統

類圖：

 

父類（車類，抽象類）

 /// <summary>
    /// 車輛基本信息類。搞一個抽象類玩玩
    /// </summary>
   public abstract class Vehicle
    {
        public string Color { get; set; }//顏色
        public double DailyRent { get; set; }//日租金
        public string LicenseNo { get; set; }//車牌號
        public string Name { get; set; }//車名
        public int RentDate { get; set; }//使用時間
        public string RentUser { get; set; }//租用者
        public int YearsOfService { get; set; }//租用天數
        public Vehicle()
        {

        }
       //構造
        public Vehicle(string color, double dailyRent, string licenseNo,string name,int rentDate)
        {
            this.Color = color;
            this.Name = name;
            this.RentDate = rentDate;
            this.LicenseNo = licenseNo;
            this.DailyRent = dailyRent;
        }
        //結算租金抽象方法
        public abstract double GetJieSuang();
       
    }

汽車類：

 /// <summary>
    /// 汽車類
    /// </summary>
    public  class Car:Vehicle
    {
        public Car()
        {
        }
        //構造
        public Car(string licenseNo, string name, string color, int rentDate, double dailyRent)
            :base(color, dailyRent,licenseNo,name, rentDate)
        {                                                                                                                           
                                                                                                                                    
        
        }
        //重寫父類計算價格的方法
        public override double GetJieSuang()
        {
            //日租金*租的天數
            double result = this.DailyRent * this.YearsOfService;
            return result;
        }
    }

卡車類：

  /// <summary>
    /// 卡車類
    /// </summary>
   public class Truck:Vehicle
    {
        public int Load { get; set; }//卡車載重
       //無參構造
        public Truck()
        {

        }
        //構造
        public Truck(string licenseNo, string name, string color, int rentDate, double dailyRent, int load)
            : base(color, dailyRent, licenseNo, name, rentDate)
        {
            this.Load = load;
        }
        //重寫父類計算租金的方法
        public override double GetJieSuang()
        {
            //日租金*租的天數
            double result = this.DailyRent * this.YearsOfService;
            return result;
        }
    }

 

具體實現：

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

namespace CarRentalSystem
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            this.cbColor.SelectedIndex = 0;//顯示顏色
            this.txtTruckLoad.Visible = false;
        }
        //保存可租用車的集合
        Dictionary<string, Vehicle> vehicle = new Dictionary<string,Vehicle>();
        //保存已租出的車的集合
        Dictionary<string, Vehicle> rentvehcile = new Dictionary<string,Vehicle>();

        //動態加載listview的方法
        public void carZaiZhong()
        {
            if (rbcar.Checked == true)
            {
                this.txtTruckLoad.Visible = false;
            }
            else if(rbTruck.Checked==true)
            {
                this.txtTruckLoad.Visible = true;
            }
        }
        /// <summary>
        /// 刷新ListView的帶參方法，傳兩個不同集合 和刷新對應的ListView
        /// </summary>
        /// <param name="list"></param>
        /// <param name="lvlist"></param>
        public void New(Dictionary<string, Vehicle> list, ListView lvlist)
        {
            ListViewItem listview = null;//局部變量要賦初始值
            lvlist.Items.Clear();//清除項
            foreach (Vehicle item in list.Values)
            {
                //如果是Car，對應的ListView添加數據
                if (item is Car)
                {
                    listview = new ListViewItem();//new出ListViewItem視圖
                    listview.Text = item.LicenseNo;//listView第一列
                    listview.SubItems.Add(item.Name);//添加子項車名
                    listview.SubItems.Add(item.Color);//顏色
                    listview.SubItems.Add(item.RentDate.ToString());//使用時間
                    listview.SubItems.Add(item.DailyRent.ToString());//日租金
                    listview.SubItems.Add("無");

                }
                else if (item is Truck)
                {
                    listview = new ListViewItem();
                    listview.Text = item.LicenseNo;
                    listview.SubItems.Add(item.Name);
                    listview.SubItems.Add(item.Color);
                    listview.SubItems.Add(item.RentDate.ToString());
                    listview.SubItems.Add(item.DailyRent.ToString());
                    listview.SubItems.Add(((Truck)item).Load.ToString());
                }
                lvlist.Items.Add(listview);//添加到對應集合的ListView中
            }

        }
        /// <summary>
        /// 初始化可租用車集合信息
        /// </summary>
        public void initial()
        {
            Truck truck = new Truck("京A88888", "大卡", "紅色", 3, 900, 20);//卡車
            Car car = new Car("京A99999", "奔馳", "黑色", 3, 300);//汽車信息      

            vehicle.Add(truck.LicenseNo, truck);//添加到可租車集合
            vehicle.Add(car.LicenseNo, car);
            //租車數據
            New(vehicle, lvCarkezu);    
        }
        /// <summary>
        /// 初始化已租出車的信息
        /// </summary>
        public void initialHc()
        {
            //對象初始化信息
            Truck truck1 = new Truck("京B99999", "小卡", "紅色", 3, 280, 10);//卡車
            Car car1 = new Car("京B99999", "紅旗", "黑色", 3, 280);//汽車信息
            rentvehcile.Add(truck1.LicenseNo, truck1);//添加到已租車集合
            rentvehcile.Add(car1.LicenseNo, car1);
            //還車數據
            New(rentvehcile, lvHuanche);
        }
        //選擇結算，還車
        private void button5_Click(object sender, EventArgs e)
        {
           
            //租用天數非空驗證
            if (this.txtRendDay.Text == "")
            {
                MessageBox.Show("請輸入天數！");
                return;
            }
            //確定是否選中一行
            if (this.lvHuanche.SelectedItems.Count == 0)
            {
                MessageBox.Show("請選擇一行！");
                return;
            }
            //獲取車牌號的值
            string carnum1 = this.lvHuanche.SelectedItems[0].Text;
            //根據車牌號獲得對應的車輛對象
            Vehicle ve = rentvehcile[carnum1];

            //獲取租用天數
            int num = Convert.ToInt32(this.txtRendDay.Text);
            //給屬性使用天數賦值
            ve.YearsOfService = num;
            //結算租金
            double money = ve.GetJieSuang();
            DialogResult result = MessageBox.Show("你要支付" + money + "元", "提示", MessageBoxButtons.OKCancel, MessageBoxIcon.Question);
            if (result == DialogResult.OK)
            {
                //直接把獲得要還的信息放入vehicles集合
                vehicle.Add(carnum1, ve);

                //刪除原來的集合
                rentvehcile.Remove(carnum1);

                //重新加載
                New(rentvehcile, lvHuanche);
                MessageBox.Show("還車成功");
            }
   
        }
        private void textBox5_TextChanged(object sender, EventArgs e)
        {

        }

        private void Form1_Load(object sender, EventArgs e)
        {
            initial();//初始化信息
            initialHc();

        }
        private void button1_Click(object sender, EventArgs e)
        {
              //退出
            DialogResult choice = MessageBox.Show("確定要退出嗎？", "提示", MessageBoxButtons.OKCancel, MessageBoxIcon.Information);
              if(choice==DialogResult.OK)
              {
                  Application.Exit();
              }
        }
        //新車入庫車型驗證，非空驗證
        public bool emptyNo()
        {
            //如果選擇了汽車           
            if (this.rbcar.Checked == true)
            {
                if (this.txtLicenseNo.Text != "" && this.
                    txtDailyRent.Text != "" && this.txtName.Text != "" && this.txtRentDate.Text != "")
                {
                    try
                    {                      
                            //文本框數字驗證
                            int rntDate = int.Parse(this.txtRentDate.Text);
                            int dailyRent = int.Parse(this.txtDailyRent.Text);
                            //double truckLoad = double.Parse(this.txtTruckLoad.Text);
                            return true;                      
                    }
                    catch (Exception)
                    {
                        MessageBox.Show("使用時間，日租金應輸入數字！");
                        return false;
                    }                  
                }
                else
                {
                    MessageBox.Show("請完善新入庫汽車信息！");
                    return false;
                }
               
            }
            else if (this.rbTruck.Checked == true)
            {
                if (this.txtLicenseNo.Text != "" && this.txtDailyRent.Text != "" && this.txtName.Text != "" && this.txtRentDate.Text != ""&&this.txtTruckLoad.Text!="")
                {
                    try
                    {
                        //文本框數字驗證
                        int rntDate = int.Parse(this.txtRentDate.Text);
                        int dailyRent = int.Parse(this.txtDailyRent.Text);
                        double truckLoad = double.Parse(this.txtTruckLoad.Text);
                        return true;

                    }
                    catch (Exception)
                    {
                        MessageBox.Show("使用時間，日租金或卡車載重應輸入數字！");
                        return false;
                    }                              
                }
                else
                {
                    MessageBox.Show("請完善新入庫卡車信息！");
                    return false;
                }             
            }
            return true;//防止報錯
        }
        //新車入庫
        private void btnRuku_Click(object sender, EventArgs e)
        {
            //文本框非空驗證       
            if (emptyNo())
            {
                //對車載重的值做一個判斷，然后存入不同的集合
                if(this.txtTruckLoad.Visible==false)
                {
                    //車牌號是唯一的
                     string licenseNo=this.txtLicenseNo.Text;//車牌號
                     foreach (string ve in vehicle.Keys)//循環查看是否有相同的車牌號，有給出提示
                     { 
                        if (ve == licenseNo)
                         {
                             MessageBox.Show("已經有相同的汽車車牌號，請您重新確認車牌號！");
                             return;
                         }
                     }
                   
                    string name =this.txtName.Text;//車名
                    string cbColor = this.cbColor.SelectedItem.ToString();//顏色
                    int rentDate=Convert.ToInt32(this.txtRentDate.Text);//使用時間
                    double dailyRent = Convert.ToDouble(this.txtDailyRent.Text);//每日租金
                    //雙列集合一般用對象初始化器，單列集合用集合初始化器，在添加數據的時候比較清晰，方便但是我這里沒用。。。
                    Car car = new Car(licenseNo, name, cbColor, rentDate, dailyRent);
                    //添加到可租車集合
                    vehicle.Add(car.LicenseNo,car);
                    MessageBox.Show("汽車入庫成功!");
                }
                else if (this.txtTruckLoad.Visible == true)
                {
                    //車牌號是唯一的
                    string licenseNo = this.txtLicenseNo.Text;//車牌號
                    foreach (string rve in vehicle.Keys)//循環查看是否有相同的車牌號，有給出提示
                    { 
                        if (rve== licenseNo)
                        {
                            MessageBox.Show("已經有相同的卡車車牌號，請您重新確認車牌號！");
                            return;
                        }
                    }
                    string name = this.txtName.Text;//車名
                    string cbColor = this.cbColor.SelectedItem.ToString();//顏色
                    int rentDate = Convert.ToInt32(this.txtRentDate.Text);//使用時間
                    double dailyRent = Convert.ToDouble(this.txtDailyRent.Text);//每日租金
                    int load = Convert.ToInt32(this.txtTruckLoad.Text);
                    //初始化信息
                    Truck tk = new Truck(licenseNo, name, cbColor, rentDate, dailyRent,load);
                    //添加到可租車集合
                    vehicle.Add(tk.LicenseNo, tk);
                  
                    MessageBox.Show("卡車入庫成功!");
                }

            }
        }

        private void btnBreak_Click(object sender, EventArgs e)
        {
            //刷新
            New(vehicle, lvCarkezu);

        }

        private void btnRent_Click(object sender, EventArgs e)
        {
            //租車
            if (this.lvCarkezu.SelectedItems.Count == 0)
            {
                MessageBox.Show("請選中一行!");
                return;
            }
            if (txtRentUser.Text == "")//非空判斷
            {
                MessageBox.Show("請輸入租用者!");
                return;

            }
            //執行租車.
            //獲取車牌號的值
            string carnum = this.lvCarkezu.SelectedItems[0].Text;
            Vehicle ve = vehicle[carnum];
            //直接把獲得要租的信息放入rentvehicles集合
            rentvehcile.Add(carnum, ve);
            //刪除原來的集合
            vehicle.Remove(carnum);

            //重新加載
            New(vehicle, lvCarkezu);
            MessageBox.Show("租車成功");
        }

        private void btnBreakor_Click(object sender, EventArgs e)
        {
            //刷新租出車的信息
            New(rentvehcile, lvHuanche);
        }

        private void rbcar_CheckedChanged(object sender, EventArgs e)
        {
            //選中則顯示文本框
            if (this.rbcar.Checked == true)
            {
                this.txtTruckLoad.Visible = false;
            }
        }

        private void rbTruck_CheckedChanged(object sender, EventArgs e)
        {
            //判斷是否選中
            //carZaiZhong();
            if (this.rbTruck.Checked == true)
            {
                this.txtTruckLoad.Visible = true;
            }
        }
        private void tabPage3_Click(object sender, EventArgs e)
        {

        }
        private void lvCarkezu_SelectedIndexChanged(object sender, EventArgs e)
        {

        }
    }
}