C#中Directory类目录操作(复制\重命名\创建\删除)

//创建文件夹
Directory.CreateDirectory(Server.MapPath("a"));
Directory.CreateDirectory(Server.MapPath("b"));
Directory.CreateDirectory(Server.MapPath("c"));
//移动b到a
Directory.Move(Server.MapPath("b"), Server.MapPath("a\b"));
//删除c
Directory.Delete(Server.MapPath("c"));

//2.---------文件创建、复制、移动、删除---------

//创建文件
//使用File.Create创建再复制/移动/删除时会提示：文件正由另一进程使用,因此该进程无法访问该文件
//改用 FileStream 获取 File.Create 返回的 System.IO.FileStream 再进行关闭就无此问题
FileStream fs;
fs = File.Create(Server.MapPath("a.txt"));
fs.Close();
fs = File.Create(Server.MapPath("b.txt"));
fs.Close();
fs = File.Create(Server.MapPath("c.txt"));
fs.Close();
//复制文件
File.Copy(Server.MapPath("a.txt"), Server.MapPath("a\a.txt"));
//移动文件
File.Move(Server.MapPath("b.txt"), Server.MapPath("a\b.txt"));
File.Move(Server.MapPath("c.txt"), Server.MapPath("a\c.txt"));
//删除文件
File.Delete(Server.MapPath("a.txt"));

//3.---------遍历文件夹中的文件和子文件夹并显示其属性---------

if(Directory.Exists(Server.MapPath("a")))
{
    //所有子文件夹
    foreach(string item in Directory.GetDirectories(Server.MapPath("a")))
    {
        Response.Write("<b>文件夹：" + item + "</b><br/>");
        DirectoryInfo directoryinfo = new DirectoryInfo(item);
        Response.Write("名称：" + directoryinfo.Name + "<br/>");
        Response.Write("路径：" + directoryinfo.FullName + "<br/>");
        Response.Write("创建时间：" + directoryinfo.CreationTime + "<br/>");
        Response.Write("上次访问时间：" + directoryinfo.LastAccessTime + "<br/>");
        Response.Write("上次修改时间：" + directoryinfo.LastWriteTime + "<br/>");
        Response.Write("父文件夹：" + directoryinfo.Parent + "<br/>");
        Response.Write("所在根目录：" + directoryinfo.Root + "<br/>");
        Response.Write("<br/>");
    }

    //所有子文件
    foreach (string item in Directory.GetFiles(Server.MapPath("a")))
    {
        Response.Write("<b>文件：" + item + "</b><br/>");
        FileInfo fileinfo = new FileInfo(item);
        Response.Write("名称：" + fileinfo.Name + "<br/>");
        Response.Write("扩展名：" + fileinfo.Extension +"<br/>");
        Response.Write("路径：" + fileinfo.FullName +"<br/>");
        Response.Write("大小：" + fileinfo.Length +"<br/>");
        Response.Write("创建时间：" + fileinfo.CreationTime +"<br/>");
        Response.Write("上次访问时间：" + fileinfo.LastAccessTime +"<br/>");
        Response.Write("上次修改时间：" + fileinfo.LastWriteTime +"<br/>");
        Response.Write("所在文件夹：" + fileinfo.DirectoryName +"<br/>");
        Response.Write("文件属性：" + fileinfo.Attributes +"<br/>");
        Response.Write("<br/>");
    }
}

//4.---------文件读写---------

if (File.Exists(Server.MapPath("a\a.txt")))
{
    StreamWriter streamwrite = new StreamWriter(Server.MapPath("a\a.txt"));
    streamwrite.WriteLine("木子屋");
    streamwrite.WriteLine("http://www.111cn.net/");
    streamwrite.Write("2008-04-13");
    streamwrite.Close();

    StreamReader streamreader = new StreamReader(Server.MapPath("a\a.txt"));
    Response.Write(streamreader.ReadLine());
    Response.Write(streamreader.ReadToEnd());
    streamreader.Close();
}

        /// <summary>
        /// 得到所有磁盘驱动器
        /// </summary>
        /// <returns></returns>
        public string[] AllDrivers()
        {
            return Directory.GetLogicalDrives();
        }

        /// <summary>
        /// 应用程序的当前工作目录，bin文件夹
        /// </summary>
        /// <returns></returns>
        public string CurrentDirectory()
        {
            return Directory.GetCurrentDirectory();
        }

        /// <summary>
        /// 获取path目录下的文件，不包括文件夹
        /// </summary>
        /// <param name="path"></param>
        /// <returns></returns>
        public string[] AllFiles(string path)
        {
            return Directory.GetFiles(path);
        }

        /// <summary>
        /// 创建一个目录如果directory存在，那么就不创建了目录了
        /// </summary>
        /// <param name="directory"></param>
        public void CreateDirectory(string directory)
        {
            //DirectoryInfo info = new DirectoryInfo(directory);        
            //info.Create();  

            DirectoryInfo info = Directory.CreateDirectory(directory);
        }

        /// <summary>
        /// 删除目录
        /// </summary>
        /// <param name="path"></param>
        public void DeleteDirectory(string path)
        {
            //Directory.Delete(path, false/*删除子目录*/);   //子目录非空则报错。

            Directory.Delete(path, true/*保留子目录*/);  //忽略子目录内容，有没有内容都删除
        }

        /// <summary>
        /// 目录下的所有文件，隐藏文件也可见,偷窥吗？
        /// </summary>
        /// <param name="path"></param>
        /// <returns></returns>
        public string[] AllContent(string path)
        {
            return Directory.GetFileSystemEntries(path);//如果path不存在则报错
        }

        /// <summary>
        /// 复制文件目录，复制完成原目录删除
        /// </summary>
        /// <param name="path1"></param>
        /// <param name="path2"></param>
        public void CopyDirectory(string sourcePath/*复制前必须存在,复制完成后挂掉了*/,string targetPath/*复制前不能存在*/)
        {
            Directory.Move(sourcePath,targetPath);
        }

        /// <summary>
        /// 编码，说实话我没用过，不知道干吗用.
        /// </summary>
        /// <returns></returns>
        public string Codeing()
        {
            Encoding code = Encoding.Default;
            //byte[] bytes = code.GetBytes("中华人民共和国");    
            byte[] bytes = code.GetBytes("i'm a smart boy");     
            return Encoding.GetEncoding("UTF-8").GetString(bytes);       //doc环境不支持中文吗？中文不能正常转回去，英文就可以。
        }
    }