c# 操作符重载

class Namer
    {
        private string FirstName;
        private string LastName;

        public Namer()
        {
            this.Init(null, null);
        }

        public Namer(string fn, string ln)
        {
            this.Init(fn, ln);
        }

        private void Init(string fn, string ln)
        {
            this.FirstName = fn;
            this.LastName = ln;
        }

        /// <summary>
        /// 重载运算符true
        /// </summary>
        /// <param name="n"></param>
        /// <returns>如果姓名中姓或名有一个为空，就返回假</returns>
        public static bool operator true(Namer n)
        {
            if (n.FirstName == null || n.LastName == null)
                return false;
            else
                return true;
        }

        /// <summary>
        /// 重载运算符false
        /// </summary>
        /// <param name="n"></param>
        /// <returns></returns>
        public static bool operator false(Namer n)
        {
            if (n.FirstName == null || n.LastName == null)
                return false;
            else
                return true;
        }

        /// <summary>
        /// 重载运算符==
        /// </summary>
        /// <param name="n1"></param>
        /// <param name="n2"></param>
        /// <returns></returns>
        public static bool operator ==(Namer n1, Namer n2)
        {
            if (n1.FirstName == n2.FirstName && n1.LastName == n2.LastName)
                return true;
            else
                return false;
        }

        /// <summary>
        /// 重载运算符！=
        /// </summary>
        /// <param name="n1"></param>
        /// <param name="n2"></param>
        /// <returns></returns>
        public static bool operator !=(Namer n1, Namer n2)
        {
            if (n1.FirstName != n2.FirstName || n1.LastName != n2.LastName)
                return true;
            else
                return false;
        }

        /// <summary>
        /// 重载运算符>
        /// </summary>
        /// <param name="n1"></param>
        /// <param name="n2"></param>
        /// <returns></returns>
        public static bool operator >(Namer n1, Namer n2)
        {
            return (n1.FirstName.CompareTo(n2.FirstName) > 0 && n1.LastName.CompareTo(n2.LastName) > 0);
        }

        /// <summary>
        /// 重载运算符<
        /// </summary>
        /// <param name="n1"></param>
        /// <param name="n2"></param>
        /// <returns></returns>
        public static bool operator <(Namer n1, Namer n2)
        {
            return (n1.FirstName.CompareTo(n2.FirstName) < 0 && n1.LastName.CompareTo(n2.LastName) < 0);
        }

        /// <summary>
        /// 重写方法，必须有,后面的111是乱加的，你也可以写其它的
        /// </summary>
        /// <returns></returns>
        public override int GetHashCode()
        {
            return base.GetHashCode() * 111;
        }

        /// <summary>
        /// 重写方法，必须有
        /// </summary>
        /// <param name="obj"></param>
        /// <returns></returns>
        public override bool Equals(object obj)
        {
            return base.Equals(obj);
        }

        /// <summary>
        /// 重写方法，必须有
        /// </summary>
        /// <returns></returns>
        public override string ToString()
        {
            return "姓:" + this.FirstName + " 名:" + this.LastName;
        }


        public static void Main()
        {
            Namer n1 = new Namer("li", "zanhong");
            Namer n2 = new Namer("ahang", "aan");
            //Namer n2=new Namer("li","zanhong");

            if (n1 == n2)
                Console.WriteLine("一样的名字");
            else
                Console.WriteLine("不一样的名字");
            /////////////////////////////////////
            if (n1 != n2)
                Console.WriteLine("不一样的名字成立");
            else
                Console.WriteLine("同样的名字成立");
            /////////////////////////////////////
            if (n1 > n2)
                Console.WriteLine(n1.ToString() + ">" + n2.ToString());
            else if (n1 < n2)
                Console.WriteLine(n1.ToString() + "<" + n2.ToString());
            else
                Console.WriteLine("没有正确比较");

            Console.ReadLine();
        }
    }