C#学习笔记六异常

异常

 

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

 

namespace 异常

{

    class Program

    {

        static void Main(string[] args)

        {

            try

            {

                int i = Convert.ToInt32("abc");

            }

            catch (Exception e)

            {

                Console.WriteLine("发生错误:" + e.Message + "\n异常堆栈:" + e.StackTrace);//这样就可以直接打印出发生异常的原因和位置

            }

            Console.ReadKey();

        }

    }

}

 

 

 

namespace 抛出自己的异常

{

    class Program

    {

        static void Main(string[] args)

        {

            try

            {

                string desc = AgeDescribe(300);

            }

            catch(Exception e)

            {

                Console.WriteLine(e.Message);

            }

        }

        static string AgeDescribe(int age)

        {

            if (age >= 0 && age < 3)

            {

                return "婴儿";

            }

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

            {

                return "青少年";

            }

            else if (age >= 18 && age < 150)

            {

                return "成年人";

            }

            else if (age >= 150)

            {

                throw new Exception("你是神仙吧！");

            }

            else if (age < 0)

            {

                throw new Exception("你来自反物质吧！");

            }

            return "0";

        }

       

    }

}