云飞扬的ITblog

 
using System;
using System.IO;
 
namespace IOcaozuo
{
    class Program
    {
        static void Main(string[] args)
        {
            string path = @"c:\temp\MyTest.txt";
            FileInfo fileinfo = new FileInfo(path);
            DisplayTimestamps(fileinfo);
        }
        public static void DisplayTimestamps(FileInfo fileInfo) //this
        {//Error 1 Extension method must be defined in a non-generic static class
            Console.WriteLine(fileInfo.CreationTime.ToString());
            Console.WriteLine(fileInfo.LastAccessTime.ToString());
            Console.WriteLine(fileInfo.LastWriteTime.ToString());
            //http://msdn.microsoft.com/zh-cn/library/system.io.file.aspx
           //http://www.ajaxcn.net/archives/850
        }
       
    }
}