C# 抛异常的问题

[tony-src]

using System;

namespace ConsoleApplication2
{
class DBHelper
{
public void showerr()
{
try
{
Convert.ToInt32("33");
}
catch (Exception)
{
Console.WriteLine("异常");
return;
}
}
}

class Program
{
static void Main(string[] args)
{
DBHelper dbHelper=new DBHelper();
dbHelper.showerr();
Console.WriteLine("执行成功!");

}
}
}

以上代码如何让其类实例抛出异常时,Console.WriteLine("执行成功!");不执行?
除了把try{}catch{}放外面...

[itzrx]

    class DBHelper
    {
        public bool showerr()
        {
            try
            {
                Convert.ToInt32("3a3");
                return true;
            }
            catch (Exception)
            {
                Console.WriteLine("异常");
                return false;
            }
        }
    }
    class Program
    {


        static void Main(string[] args)
        {
            DBHelper dbHelper = new DBHelper();
            if (dbHelper.showerr())
            {
                Console.WriteLine("执行成功!");
            }
            Console.ReadKey();
        }
    }

[d563382384]

Console.Readline()加上 你才能看出效果