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小总结：在汽车租赁系统中用到了类的方法，构造函数，值类型，和引用类型
使用集合储存数据，并能使用封装，继承，多态创建和操作类
1.租车。。显示系统中所有可出租的汽车，选中要出租的汽车，输入租用人 以出租汽车
代码如下：
1 public Dictionary<string, Vehicle> vehicles;//可租的车的集合保存 2 public Dictionary<string, Vehicle> renttVehicles;//租出的车的集合保存 3 private void Form1_Load(object sender, EventArgs e) 4 { 5 //将数据加载到集合中 6 vehiclee(); 7 //默认载重量文本框不可用 8 this.txtzai.ReadOnly = true; 9 } 10 //构造出两辆小汽车，两辆卡车 11 public void vehiclee() 12 { 13 //实例化未出租字典类型的集合 14 vehicles = new Dictionary<string, Vehicle>(); 15 Car dd = new Car("粉色", 99999, "京P1111", "捷豹TK07", 1); 16 Truck ds = new Truck("蓝色", 150, "豫C6644", "长江卡货", 2, 40); 17 vehicles.Add(dd.LicenseNo, dd); 18 vehicles.Add(ds.LicenseNo, ds); 19 //实例化已出租字典类型的集合 20 renttVehicles = new Dictionary<string, Vehicle>(); 21 //出租出去的车 22 Car car= new Car("白色", 240, "京PC9K11", "奥迪A8", 3); 23 Truck truck= new Truck("黑色", 582, "京AP6666", "擎天柱", 5, 30); 24 renttVehicles.Add(car.LicenseNo, car); 25 renttVehicles.Add(truck.LicenseNo, truck); 26 car.RentUser = this.txtname.Text; 27 28 } 29 public void PrintVehicles(Dictionary<string, Vehicle> rnotrent, ListView lvshow) 30 { 31 lvshow.Items.Clear(); 32 foreach (Vehicle item in rnotrent.Values) 33 { 34 ListViewItem lvitem = new ListViewItem(item.LicenseNo); 35 if (item is Car) 36 { 37 lvitem.SubItems.Add(item.Name); 38 lvitem.SubItems.Add(item.Color.ToString()); 39 lvitem.SubItems.Add(item.YearsOfService.ToString()); 40 lvitem.SubItems.Add(item.DailyRent.ToString()); 41 42 } 43 if (item is Truck) 44 { 45 lvitem.SubItems.Add(item.Name); 46 lvitem.SubItems.Add(item.Color.ToString()); 47 lvitem.SubItems.Add(item.YearsOfService.ToString()); 48 lvitem.SubItems.Add(item.DailyRent.ToString()); 49 lvitem.SubItems.Add(((Truck)item).Load.ToString()); 50 } 51 lvshow.Items.Add(lvitem); 52 } 53 }54 //租车 55 private void button2_Click(object sender, EventArgs e) 56 { 57 if (txtname.Text=="") 58 { 59 MessageBox.Show("请您输入租用者的姓名再来租用！哦"); 60 return; 61 } 62 //从可租车辆集合中移除车辆A 63 //将A添加到已租车辆集合中 64 if (listView1.SelectedItems.Count>0) 65 { 66 string number = listView1.SelectedItems[0].Text; 67 Vehicle ve = vehicles[number]; 68 vehicles.Remove(number); 69 PrintVehicles(vehicles, listView1);//重新绑定 ListView 70 renttVehicles.Add(number, ve); 71 MessageBox.Show("已出租。", "提示！", MessageBoxButtons.OK, MessageBoxIcon.Information); 72 } 73 } 74 //刷新 75 private void button1_Click(object sender, EventArgs e) 76 { 77 PrintVehicles(vehicles, listView1); 78 }
1 //关闭窗体 2 private void button6_Click(object sender, EventArgs e) 3 { 4 this.Close(); 5 }
2.还车。在还车列表中选择汽车信息，输入出租天数，计算租金
//结算
private void button3_Click(object sender, EventArgs e)
{
if (textBox2.Text==string.Empty)
{
MessageBox.Show("请输入租出时间！");
return;
}
//01.将车A从已租集合中移除 //02,将车A加入到可租车辆中
string number = listView2.SelectedItems[0].Text;
Vehicle ve = renttVehicles[number];
renttVehicles.Remove(number);
PrintVehicles(renttVehicles, listView2);//重新绑定 ListView
vehicles.Add(number, ve);
ve.RentDate = Convert.ToInt32(textBox2.Text);
double money = 0;
money = ve.CalcPrice();
MessageBox.Show("您需要支付"+money+"元");
}
//刷新
private void button4_Click(object sender, EventArgs e)
{
PrintVehicles(renttVehicles, listView2);
}
3.新手入库。需要录入汽车的车牌号，车型，颜色使用时间和每日租金。如果是卡车还要录入卡车的载重，
1 //入库 2 private void button5_Click(object sender, EventArgs e) 3 { 4 if (txthao.Text == string.Empty || txtxing.Text == string.Empty || cmdse.Text == string.Empty || txtshijan.Text == string.Empty 5 || txtmei.Text == string.Empty) 6 { 7 MessageBox.Show("请您都填写完整在入库！"); 8 } 9 else 10 { 11 string linno = txthao.Text; 12 string xing = txtxing.Text; 13 string color = cmdse.Text; 14 int time = Convert.ToInt32(txtshijan.Text); 15 double zu = Convert.ToDouble(txtmei.Text); 16 if (radioButton1.Checked) 17 { 18 Car dd = new Car(color, zu, linno, xing, time); 19 vehicles.Add(linno, dd); 20 } 21 if (radioButton2.Checked) 22 { 23 24 int load = Convert.ToInt32(txtzai.Text); 25 Truck ds = new Truck(color, zu, linno, xing, time, load); 26 vehicles.Add(linno, ds); 27 } 28 MessageBox.Show("添加成功@！"); 29 } 30 } 31 //切换到汽车载重量变成不可选用 32 private void radioButton1_CheckedChanged(object sender, EventArgs e) 33 { 34 this.txtzai.ReadOnly = true; 35 } 36 //切换到卡车添加清空一下所有的文本框 37 private void radioButton2_CheckedChanged(object sender, EventArgs e) 38 { 39 this.txthao.Text = string.Empty; 40 this.txtmei.Text = string.Empty; 41 this.txtname.Text = string.Empty; 42 this.txtshijan.Text = string.Empty; 43 this.txtxing.Text = string.Empty; 44 this.txtzai.Text = string.Empty; 45 this.txtzai.ReadOnly = false; 46 }
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原文地址：http://www.cnblogs.com/xiaotangtang/p/4640873.html
