c# – ToString()不返回预期的字符串

using System;
using System.Collections.Generic;
using System.Text;

namespace ConsoleApplication3Generics
{
    class Program
    {
        static void Main(string[] args)
        {
            ScheduleSelectedItems sitems = new ScheduleSelectedItems("Yusuf");
            ScheduleSelectedItemsList slist = new ScheduleSelectedItemsList();
            slist.Items.Add(sitems);
            Console.Write(slist.Items[0].ToString());
            Console.ReadKey();
        }
    }
    public class ScheduleSelectedItems
    {
        private string Ad;

        public ScheduleSelectedItems(string ad)
        {
            Ad = ad;
        }
    }

    public class ScheduleSelectedItemsList
    {
        public List Items;

        public ScheduleSelectedItemsList()
        {
            Items = new List();
        }
    }
}

如何在我的控制台上添加“yusuf”？

解决方法

public class ScheduleSelectedItems
    {
        private string Ad;

        public ScheduleSelectedItems(string ad)
        {
            Ad = ad;
        }

        public override string ToString()
        {
            return this.Ad;
        }
    }