汽车租赁系统（第二种方式）
一、系统窗体
1)vehic类
//父类 汽车类
public abstract class Vehicle
{
//汽车牌照
public string CarID { get; set; }
//汽车名
public string Name { get; set; }
//颜色
public string Color { get; set; }
//使用 时间
public int RentDate { get; set; }
//日租金
public int Price { get; set; }
//计算租金的抽象方法
public abstract double GetPrice(int day);
}
2）Car小轿车类
//小车类
public class Car:Vehicle
{
//计算汽车租金
public override double GetPrice(int day)
{
double Price = this.Price * day;
return Price;
}
}
3）Truck卡车类
public class Truck:Vehicle
{
//卡车载重
public int Load { get; set; }
//计算卡车的租金
public override double GetPrice( int day)
{
double Price = this.Price * day;
return Price;
}
}
4）FrmMain窗体的代码
public partial class FrmMain : Form
{
public FrmMain()
{
InitializeComponent();
}
//保存可租车辆的信息 （Key ： 车牌号 ， Value： 车辆对象）
public Dictionary<string, Vehicle> RentalCar = new Dictionary<string, Vehicle>();
//保存租车 车辆信息 （Key : 车牌号 , Value 车辆对象）
public Dictionary<string, Vehicle> EndCar = new Dictionary<string, Vehicle>();
//初始化租车信息
public void Rental()
{
Car car1 = new Car();
car1.CarID = "京Ro7845";
car1.Color = "红色";
car1.Name = "奔驰";
car1.Price = 100;
car1.RentDate = 30;
Car car2 = new Car();
car2.CarID = "湘Rok545";
car2.Color = "红色";
car2.Name = "大众";
car2.Price = 500;
car2.RentDate = 30;
Truck truck1 = new Truck();
truck1.CarID = "粤Jo7845";
truck1.Color = "黑色";
truck1.Name = "路虎";
truck1.Price = 60;
truck1.RentDate = 30;
truck1.Load = 130;
Truck truck2 = new Truck();
truck2.CarID = "赣Kjg845";
truck2.Color = "白色";
truck2.Name = "三菱";
truck2.Price = 120;
truck2.RentDate = 30;
truck2.Load = 60;
RentalCar.Add(car1.CarID, car1);
RentalCar.Add(truck1.CarID, truck1);
RentalCar.Add(car2.CarID, car2);
RentalCar.Add(truck2.CarID, truck2);
}
private void FrmMain_Load(object sender, EventArgs e)
{
//初始化租车信息
Rental();
//绑定数据到租车信息的listview上
GetDataToList();
}
//给租车Listview上绑定数据
private void GetDataToList()
{
//清空Iistview集合的数据 重新绑定
lvlist.Items.Clear();
foreach (KeyValuePair<string,Vehicle> item in RentalCar)
{
ListViewItem list = new ListViewItem(item.Value.CarID);
list.SubItems.Add(item.Value.Name);
list.SubItems.Add(item.Value.Color);
list.SubItems.Add(item.Value.RentDate.ToString());
list.SubItems.Add(item.Value.Price.ToString());
if (item.Value is Truck)
{
Truck truck = (Truck)item.Value;
list.SubItems.Add(truck.Load.ToString());
}
else
{
list.SubItems.Add("无");
}
lvlist.Items.Add(list);
}
}
//给还车ListView绑定数据
public void GetDataToListEnd()
{
//清空数据
lvlistEnd.Items.Clear();
foreach (KeyValuePair<string, Vehicle> item in EndCar)
{
ListViewItem list = new ListViewItem(item.Value.CarID);
list.SubItems.Add(item.Value.Name);
list.SubItems.Add(item.Value.Color);
list.SubItems.Add(item.Value.RentDate.ToString());
list.SubItems.Add(item.Value.Price.ToString());
if (item.Value is Truck)
{
Truck truck = (Truck)item.Value;
list.SubItems.Add(truck.Load.ToString());
}
else
{
list.SubItems.Add("无");
}
lvlistEnd.Items.Add(list);
}
}
//租车刷新
private void button2_Click(object sender, EventArgs e)
{
GetDataToList();
}
//租车
private void button1_Click(object sender, EventArgs e)
{
//判断租车人信息不为空
if (txtName.Text != "")
{
//判断是否选中一项
if (lvlist.SelectedItems.Count > 0)
{
//获取选中车辆的车牌号
string CarID = lvlist.SelectedItems[0].SubItems[0].Text;
//在可租集合里面找到车牌号为CarID的车辆，并将其车对象赋值到已租车辆的集合中
EndCar.Add(CarID, RentalCar[CarID]);
//移除可租车辆里该车辆的信息
RentalCar.Remove(CarID);
MessageBox.Show("租车成功！！");
}
else
{
MessageBox.Show("请选择一项！！");
}
}
else
{
MessageBox.Show("请填写租车人信息!!");
}
}
//还车刷新
private void button3_Click(object sender, EventArgs e)
{
//刷新还车list
GetDataToListEnd();
}
//选择选项卡时发生
private void tabControl1_Selected(object sender, TabControlEventArgs e)
{
if (e.TabPage == tabPage1) //租车的选项卡
{
//刷新租车List
GetDataToList();
}
else if (e.TabPage == tabPage2) //还车选项卡
{
//刷新还车list
GetDataToListEnd();
}
else
{
rdoCar.Checked = true;
}
}
//还车结算
private void button4_Click(object sender, EventArgs e)
{
//判断租车时间不为空
if (txtDay.Text != "")
{
//获得租车的天数
int Day = Convert.ToInt32(txtDay.Text);
//判断是否选中一项
if (lvlist.SelectedItems.Count > 0)
{
//获取选中车辆的车牌号
string CarID = lvlistEnd.SelectedItems[0].SubItems[0].Text;
//调用计算价格的方法
double Price = EndCar[CarID].GetPrice(Day);
MessageBox.Show("您的总价格是"+Price.ToString());
//将已借车辆从已借集合中复制到可借车辆集合中
RentalCar.Add(CarID,EndCar[CarID]);
//移除已借车辆集合中的该车对象
EndCar.Remove(CarID);
}
else
{
MessageBox.Show("请选择一项！！");
}
}
else
{
MessageBox.Show("请填写租车使用时间");
}
}
//新车入库
private void button5_Click(object sender, EventArgs e)
{
//获得车牌号
string CarId = txtCarId.Text;
//获得车名
string CarName = txtName.Text;
//获得车颜色
string CarColor = rboColor.Text;
//获得车使用时间
int Day = Convert.ToInt32(txtuseTime.Text);
//获得日租金
int Price = Convert.ToInt32(txtPrice.Text);
//判断是选中的卡车还是汽车
if (rdoTruck.Checked == true)
{
//获得载重量
int Height = Height = Convert.ToInt32(txtHeight.Text);
Truck truck = new Truck();
truck.CarID = CarId;
truck.Name = CarName;
truck.Price = Price;
truck.RentDate = Day;
truck.Color = CarColor;
//将新增车加入到可借集合中
RentalCar.Add(CarId,truck);
}
else
{
Car car = new Car();
car.CarID = CarId;
car.Name = CarName;
car.Price = Price;
car.RentDate = Day;
car.Color = CarColor;
//将新增车加入到可借集合中
RentalCar.Add(CarId, car);
}
}
//单选按钮
private void rdoCar_CheckedChanged(object sender, EventArgs e)
{
//判断是选中的卡车还是汽车
if (rdoTruck.Checked == true)
{
Clear();
//启用载重控件
txtHeight.Enabled = true;
}
else
{
Clear();
//禁用载重控件
txtHeight.Enabled = false;
}
}
//清空txt文本的值
public void Clear()
{
txtCarId.Text = "";
txtName.Text = "";
rboColor.Text = "";
txtuseTime.Text= "";
txtPrice.Text= "";
txtCarName.Text = "";
}
}
这种方法相对简单理解
