1.Hashtable 实现Hashtable table = new Hashtable();            while (true)            {                Console.WriteLine("------------------1.增加--------------------");                Console.WriteLine("------------------2.查询--------------------");                Console.WriteLine("------------------3.查询全部----------------");                Console.WriteLine("------------------4.删除--------------------");                Console.WriteLine("请输入你要使用的功能：");                int num = int.Parse(Console.ReadLine());                switch (num)                {                    case 1:                        Console.WriteLine("请输入姓名：");                        string name = Console.ReadLine();                        Console.WriteLine("请输入年龄 性别 爱好 联系方式：");                        string str = Console.ReadLine();                        table.Add(name, str);                        break;                    case 2:                        Console.WriteLine("请输入姓名：");                        string nameQuery = Console.ReadLine();                        Console.WriteLine();                        if (table.Contains(nameQuery))                        {                            Console.WriteLine(nameQuery + " " + table[nameQuery]);                        }                        break;                    case 3:                        Console.WriteLine();                        foreach (DictionaryEntry d in table)                        {                            Console.WriteLine(d.Key + " " + d.Value);                        }                        break;                    case 4:                        Console.WriteLine("请输入姓名：");                        string delete = Console.ReadLine();                        table.Remove(delete);                        break;                }2:list<KeyValuePair>泛型实现            List<KeyValuePair<string, string>> listkey = new List<KeyValuePair<string, string>>();            while (true)            {                Console.WriteLine("------------------1.增加--------------------");                Console.WriteLine("------------------2.查询--------------------");                Console.WriteLine("------------------3.查询全部----------------");                Console.WriteLine("------------------4.删除--------------------");                Console.WriteLine("请输入你要使用的功能：");                int num = int.Parse(Console.ReadLine());                switch (num)                {                    case 1:                        Console.WriteLine("请输入添加的姓名：");                        string name = Console.ReadLine();                        Console.WriteLine("请输入年龄 性别 爱好 联系方式：");                        string str = Console.ReadLine();                        listkey.Add(new KeyValuePair<string, string>(name, str));                        Console.WriteLine("成功");                        break;                    case 2:                        Console.WriteLine("请输入查找的姓名：");                        string nameQuery = Console.ReadLine();                        Console.WriteLine();                        if (listkey)                        {                            Console.WriteLine(nameQuery + " " + listkey[nameQuery]);                        }                        Console.WriteLine("成功");                        break;                    case 3:                        Console.WriteLine("查找全部");                        foreach (DictionaryEntry d in listkey)                        {                            Console.WriteLine(d.Key + " " + d.Value);                        }                        Console.WriteLine("成功");                        break;                    case 4:                        Console.WriteLine("请输入删除的姓名：");                        string delete = Console.ReadLine();                        table.Remove(delete);                        Console.WriteLine("成功");                        break;                }