using System;
using System.IO;
class Test
{
    public static void Main()
    {
        string path = Path.GetTempFileName();
        FileInfo fi1 = new FileInfo(path);
        if (!fi1.Exists)
        {
            using (StreamWriter sw = fi1.CreateText())
            {
                sw.WriteLine("Hello");
                sw.WriteLine("And");
                sw.WriteLine("Welcome");
            }
        }
        using (StreamReader sr = fi1.OpenText())
        {
            string s = "";
            while ((s = sr.ReadLine()) != null)
            {
                Console.WriteLine(s);
            }
        }
        try
        {
            string path2 = Path.GetTempFileName();
            FileInfo fi2 = new FileInfo(path2);
            if (fi2.Exists )    fi2.Delete();
            fi1.CopyTo(path2);
            Console.WriteLine("{0} ļƵ {1}", path, path2);
            fi2.Delete();
            Console.WriteLine("{0} ļѳɹɾ", path2);
        }
        catch (Exception e)
        {
            Console.WriteLine("ʧܣԭǣ{0}", e.ToString());
        }
        Console.ReadLine();
    }
}
