黑马程序员_异常实例_.NET_编程开发_程序员俱乐部

using System;

using System.Collections.Generic;

using System.Linq; using System.Text;

//2014.3.14

namespace _6.异常

{

    class Program

    {

        static void Main(string[] args)

        {

            try

            {

                Console.WriteLine("Convert之前");

                int a = Convert.ToInt32(Console.ReadLine());

                Console.WriteLine("Convert之后");

            }

            catch (Exception ex)

            {

                Console.WriteLine("输入错误："+ex.Message+"异常堆栈："+ex.StackTrace);

            }

            try

            {

                Console.WriteLine("请输入你的年龄：");

                int s = Convert.ToInt32(Console.ReadLine());

                string desc = GetAgeDesc(s);

                Console.WriteLine(desc);

            }

            catch (Exception ex)

            {

                Console.WriteLine("数据错误，"+ex.Message);

            }

             Console.ReadKey();

        }

        static string GetAgeDesc(int age)

        {

            if (age >= 0 && age <= 3)

            {

                return "婴幼儿";

            }

            else if (age > 3 && age < 18)

            {

                return "青少年";

            }

            else if (age >=18 && age < 60)

            {

                return "成年人";

            }

            else if (age >= 60 && age < 100)

            {

                return "老年人";

            }

            else

            {

                throw new Exception("自己创建的ex.Message");

            }

        }

    }

}