base关键字

usingSystem;

usingSystem.Collections.Generic;

usingSystem.Linq;

usingSystem.Text;

usingSystem.Threading.Tasks;

namespacebase关键字

{

   classProgram

    {

       staticvoidMain(string[] args)

        {

           Carcar =newCar();

           Carcar2 =newCar("3333333",54.7);

           //Vehicle vehicle = new Vehicle();

           //Vehicle vehicle2 = new Vehicle("111111111111");

           //car.run();

           //vehicle.run();

           danlidan =newdanli();

           //danli d = new danli(string namw);

        }

    }

   publicclassVehicle

    {

       publicVehicle()

        {

           Console.WriteLine("这是父类vehicle的构造器");

        }

       publicVehicle(stringId)

        {

           Console.WriteLine("父类车牌号是："+Id);

        }

       publicvirtualvoidrun()

        {

           Console.WriteLine("这是父类Vehicle的方法");

        }

    }

   publicclassCar:Vehicle

    {

       publicCar():base()

        {

           Console.WriteLine("这是子类car的构造器");

         }

       publicCar(stringId,doubleWeight):base(Id)

        {

           Console.WriteLine("子类car的车牌号是："+Id+"车子重量是"+Weight);

        }

       publicoverridevoidrun()

        {

           Console.WriteLine("这是子类car的方法");

           base.run();

        }

    }

   publicclassdanli

    {

       publicdanli()

        {

        }

       privatedanli(stringname)

        {

        }

    }

}