class Program

    {

        static void Main(string[] args)

        {

            //通过反射来调私有的成员

            Type type = typeof(Person);

            //BindingFlags类型枚举，BindingFlags.NonPublic | BindingFlags.Instance 组合才能获取到private私有方法

            MethodInfo methodInfo = type.GetMethod("SayHello", BindingFlags.NonPublic | BindingFlags.Instance);

            object obj = Activator.CreateInstance(type);  //通过反射类型创建实例对象

            methodInfo.Invoke(obj, null);

        }

    }

    public class Person

    {

        private void SayHello()

        {

            Console.WriteLine("我是私有方法。");

            Console.ReadKey();

        }

    }