c#异常捕获

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            int number = 0;
            Console.WriteLine("请输入一个数字：");
            try
            {
                number = Convert.ToInt32(Console.ReadLine());
                Console.WriteLine(number * 2);
            }
            catch(Exception ex)
            {
                Console.WriteLine(ex);
            }
            Console.ReadKey();
        }
    }
}