单例模式 MonoState

    public class Boss
    {
        private static string name;

        public string Name { get => name; set => name = value; }

        public override string ToString()
        {
            return $"Boss is {name}";
        }
    }
    class Program
    {
        static void Main(string[] args)
        {
            Boss boss1 = new Boss();
            boss1.Name = "张三";

            Boss boss2 = new(); 
            Console.WriteLine(boss2);
        }
    }