摘要： using System;using System.Collections.Generic;using System.Linq;using System.Text;namespace InheritanceApp{ class Employee { public string name; public Employee(string name) { this.name = name; } public virtual void CalculatePay() { Console.WriteLine("Employee.CalculatePay called for {0}", 阅读全文

摘要： using System;using System.Collections.Generic;using System.Linq;using System.Text;namespace InheritanceApp{ class Employee { public string name; public Employee(string name) { this.name = name; } public void CalculatePay() { Console.WriteLine("Employee.CalculatePay called for {0}",name); } 阅读全文

摘要： using System;using System.Collections.Generic;using System.Linq;using System.Text;namespace InheritanceApp{ class Employee { public void CalculatePay() { Console.WriteLine("Employee.CalculatePay()"); } } class SalariedEmployee : Employee { //如果去掉new出现如下警告 //警告:“InheritanceApp.SalariedEmplo 阅读全文

摘要： using System;using System.Collections.Generic;using System.Linq;using System.Text;//封闭类不能派生子类//原因：封闭类不能被作为基类使用//好处:防止意外的派生的操作//注意：抽象类不能作为封闭类使用（抽象类本质决定了他们必须被作为基类使用）namespace InheritanceApp{ sealed class Point { public Point(int x, int y) { X = x; Y = y; } public int X; public int Y; } //语法错误：无法从密封类型P 阅读全文

摘要： //继承 //1.C#中实现多继承效果的唯一办法是通过使用接口 class Control { } interface ISerializable { } interface IDataBound { } //MyFancyGrid继承自Control实现了ISerializable和IDataBound接口 class MyFancyGrid : Control, ISerializable, IDataBound { } 下面做法是错误的。 阅读全文