public class Person
{
private string _name = null;
private int _age = 0;
public Person(string name, int age)//父类的构造方法
{
this._name = name;//获得参数的值
this._age = age;
Console.WriteLine("您的姓名是{0},您的年龄是{1}.",
this._name, this._age);
}}
public class Studnet : Person
{
private int _id;
public Studnet(string name, int age, int IDCard):base(name,age)
//子类构造方法继承父类构造方
//把接受到的name、age两个参数交给父类的构造方法去处理
{
this._id = IDCard;
Console.WriteLine("您的身份证号码为{0}",this._id);
}}
class Program
{
static void Main(string[] args)//主函数
{
Studnet stu = new Studnet("benshou", 12, 99999);
Console.ReadLine();
}
} 

public class Person
{
public virtual void ShowME(string name,string school,string Class)
{
Console.WriteLine("我在{0}学习",Class);
Console.WriteLine("我叫{0}.我毕业与{1}",name,school);
}}
public class Studnet : Person
{
public override void ShowME(string name,string school, string Class)
//重写了父类的ShowME方法
{
Console.WriteLine("姓名{0}\n毕业学校{1}\n曾读班级{2}",
name,school,Class);
}
}
}
class Program
{
static void Main(string[] args)//主函数
{
Student stu = new Studnet();
stu.ShowME("benshou","浙江金融职业学院","电子商务(7)班");
Console.ReadLine();
}
} 

public class Person
{
public void ShowME(string name,string school,string Class)
{
Console.WriteLine("我在{0}学习",Class);
Console.WriteLine("我叫{0}.我毕业与{1}",name,school);
}
}
public class Studnet : Person
{
public new void ShowME(string name)
{
Console.WriteLine("姓名{0}",name);
}
}
class Program
{
static void Main(string[] args)//主函数
{
Studnet stu = new Studnet();
stu.ShowME("benshou");
Console.ReadLine();
}
}