program.cs

这是.net2005学习不可缺少的教程

using System;

class RefRefExample
{
    static void Method(ref string s)
    {
        s = "changed";
    }
    static void Main()
    {
        string str = "original";
        Console.WriteLine("str = " + str);

        Method(ref str);
        // str is now "changed"
        Console.WriteLine("str = " + str);
    }
}