C#实现定义一个通用返回值

[Serializable]
    public class ReturnResult
    {
        public ReturnResult(Result _result, string _msg)
        {
            this.result = _result;
            this.msg = _result == Result.success ? "操作成功!" + _msg : "操作失败!" + _msg;
        }
        public ReturnResult(Result _result)
            : this(_result, "")
        {
        }
        public Result result { get; set; }
        public string msg { get; set; }
    }
    [Serializable]
    public class ReturnResult<T> : ReturnResult
    {
        public ReturnResult(T _data)
            : base(Result.success)
        {
            this.data = _data;
        }
        public ReturnResult(Result _result, string _msg)
            : base(_result, _msg)
        {
        }
        public ReturnResult(Result _result, string _msg, T _data)
            : base(_result, _msg)
        {
            this.data = _data;
        }
        public T data { get; set; }
    }

    public enum Result
    {
        error = 0,
        success = 1
    }

public ReturnResult<string> GetMsg()
        {
            return new ReturnResult<string>("msg");
        }
        public ReturnResult<int> GetCode()
        {
            return new ReturnResult<int>(10);
        }
        public ReturnResult<Student> GetInfo()
        {
            Student student = new Student
            {
                id = 1,
                name = "张三"
            };
            return new ReturnResult<Student>(student);
        }

        public class Student
        {
            public int id { get; set; }
            public string name { get; set; }
        }

        private void button1_Click(object sender, EventArgs e)
        {
            var result = GetCode();
            if (result.result == Result.success)
            {
                MessageBox.Show(result.msg + result.data);
            }
        }

        private void button2_Click(object sender, EventArgs e)
        {
            var result = GetMsg();
            if (result.result == Result.success)
            {
                MessageBox.Show(result.msg + result.data);
            }
        }

        private void button3_Click(object sender, EventArgs e)
        {
            var result = GetInfo();
            if (result.result == Result.success)
            {
                MessageBox.Show(result.msg + Newtonsoft.Json.JsonConvert.SerializeObject(result.data));
            }
        }