public void TestFunc()

        {

            Complex complex1 = new Complex();

            Complex complex2 = new Complex();

            var s = complex1 + complex2;

        }

    }

    public class Complex

    {

        public string Name { get; set; }

        public int Age { get; set; }

        public Complex()

        {

        }

        // 必须在当前类中定义

        public static Complex operator +(Complex a, Complex b)

        {

            return new Complex() { Name = a.Name + b.Name, Age = a.Age + b.Age };

        }

        public static string operator -(Complex a, Complex b)

        {

            return null;

        }

        //public static Boolean operator ==(Complex a, Complex b)

        //{

        //    return true;

        //}

        //public static Boolean operator !=(Complex a, Complex b)

        //{

        //    return false;

        //}

        //public override bool Equals(object obj)

        //{

        //    return base.Equals(obj);

        //}

        //public override int GetHashCode()

        //{

        //    return base.GetHashCode();

        //}

    }

}