_61.PropertyTest”不包含采用“1”参数的构造函数

Question

using System;using System.Collections.Generic;using System.Linq;using System.Text; namespace _61{    class PropertyTest    {        private int age;        PropertyTest(int age)        {            this.age = age;        }        public int Age        {            get            {                return this.age;            }            set            {                if (value > 0 && value < 100)                {                    this.age = value;                }            }        }    }    class ReadProperty    {        private string name;        ReadProperty(string name)        {            this.name = name;        }        public string Name        {            get            {                return this.name;            }        }    }    class Program    {        static void Main(string[] args)        {            PropertyTest propertyTest=new PropertyTest(23);            propertyTest.Age = 33;            Console.WriteLine("年龄为：{0}", propertyTest.Age);            ReadProperty readProperty=new ReadProperty("张三丰");            Console.WriteLine("姓名为：{0}", readProperty.Name);            Console.ReadLine();        }    }} c#中不是可以声明属性吗？这个例子是我看的演示程序，为什么运行不出来呢，麻烦高手给看看~~

Answer 1

构造需要是Public的

public PropertyTest(int age)
{
            this.age = age;
}