异常处理与自定义异常学习笔记

 

 1 public class Person   
 2{
 3        private int _age;
 4        public int Age
 5        {
 6            set {
 7                    if (value < 0 || value > 150)
 8                    {
 9                        throw new AgeFormatException("年龄输入不对！");
                    }
                    else
                    {
                        this._age = value;
                    }
                }
            get { return this._age; }
        }
        public class AgeFormatException : FormatException //自定义异常
        {
            public AgeFormatException()
                : base()
            { }
            public AgeFormatException(string message)
                : base(message)
            { }
               
        }
      public  static void Main(string[] args)
        {
            Person p = new Person();
            while (true)
            {
                try
                {
                    Console.WriteLine("请输入年龄：");
                    int intAge = Convert.ToInt32(Console.ReadLine());
                    p.Age = intAge;
                    Console.WriteLine("此人的年龄：" + p.Age);
                }
                catch (OverflowException oex)
                {
                    throw oex; 
                }
                catch (FormatException fex)
                {
                    throw fex;
                }
                catch (Exception ex)
                {
                    throw ex;
                }
            }
        }
    }