override.cs

北大青鸟-Cs学生用书-教师用书实例源代码.rar

using System;

namespace Example_4
{

	///<summary>
	/// 此程序演示 base、override 和 virtual 关键字
	///</summary>


	class Employee
	{
		public virtual void EmpInfo() 
		{ 
			Console.WriteLine("该方法显示职员信息");
		}
	}
	class DervEmployee: Employee
	{
		public override void EmpInfo() 
		{ 
			base.EmpInfo();
			Console.WriteLine("该方法重写 base 方法");
		}
	}
	class Test
	{
		///<summary>
		/// 应用程序的主入口点。
		///</summary>

		static void Main(string[] args) 
		{
			DervEmployee objDervEmployee = new DervEmployee();
			objDervEmployee.EmpInfo();
			Employee objEmployee = objDervEmployee; 
			objEmployee.EmpInfo();
		}
	}
}