如何在C#中使用"using"捕获异常

using System;
using System.IO;

class Example
{
    static void Main()
    {
        try
        {
            using (FileStream fs = new FileStream("example.txt", FileMode.OpenOrCreate))
            {
                // 在这里执行文件操作
                fs.WriteByte(0xFF);
                throw new Exception("An error occurred.");
            }
        }
        catch (Exception ex)
        {
            Console.WriteLine("An exception was caught: " + ex.Message);
        }
        finally
        {
            Console.WriteLine("The FileStream object has been disposed.");
        }
    }
}