C#查看文件目录操作、复制、替换

class Program
    {
        static void Main(string[] args)
        {
            List<FileInfo> lst = new List<FileInfo>();
            string strPath = @"E:aaa";
            List<FileInfo> lstFiles = getFile(strPath, ".aspx", lst);
            foreach (FileInfo shpFile in lstFiles)
            {
                string aspxFile="";
                aspxFile += shpFile.FullName + "
";
                DirectoryInfo di = new DirectoryInfo("E:/bbb");
                DirectoryInfo di2 = new DirectoryInfo("E:/ccc");
                CopyFilesRecursively(di,di2);  //复制目录文件到新文件夹
                //DeleteFolder("E:/syjd_bak/abc"); //删除文件目录
                  DeleteBaiDuShangQiaoJStream("E:/ccc/myfile.txt"); //替换目录文件夹内容
               

            }
        }

        //删除文件目录
        public static void DeleteFolder(string dir)
        {
            if (Directory.Exists(dir))
            {
                foreach (string d in Directory.GetFileSystemEntries(dir))
                {
                    if (File.Exists(d))
                        File.Delete(d);
                    else
                        DeleteFolder(d);
                }
                Directory.Delete(dir, true);

            }
        }
        //复制文件到其它目录
        private static void CopyFilesRecursively(DirectoryInfo source, DirectoryInfo target)
        {
            foreach (DirectoryInfo dir in source.GetDirectories())
            {
                CopyFilesRecursively(dir, target.CreateSubdirectory(dir.Name));
            }

            foreach (FileInfo file in source.GetFiles())
            {
                file.CopyTo(Path.Combine(target.FullName, file.Name), true);
            }
        }
        //替换文件相关内容
        private static void DeleteBaiDuShangQiaoJStream(string FilePath)
        {
            string _html = "";
            //打开文件流
            FileStream file = new FileStream(FilePath, FileMode.Open, FileAccess.Read);
            //获取输出流
            StreamReader sr = new StreamReader(file);
            //读取文件所有内容并转为字符串
            _html = sr.ReadToEnd();
            //释放资源
            sr.Dispose();
            file.Dispose();
            //通过正则匹配，删除百度商桥的相关JS文件
            _html = _html.Replace(@"Windows 7", @"Windows 2007");
            //覆盖文件流
            file = new FileStream(FilePath, FileMode.Truncate, FileAccess.Write);
            //获取输入流
            StreamWriter sw = new StreamWriter(file);
            //覆盖
            sw.WriteLine(_html);
            //释放资源
            sw.Dispose();
            file.Dispose();
        }
        //显示当前目录下的所有文件
        public static List<FileInfo> getFile(string path, string extName, List<FileInfo> lst)
        {
            try
            {

                string[] dir = Directory.GetDirectories(path); //文件夹列表  
                DirectoryInfo fdir = new DirectoryInfo(path);
                FileInfo[] file = fdir.GetFiles();
                //FileInfo[] file = Directory.GetFiles(path); //文件列表  
                if (file.Length != 0 || dir.Length != 0) //当前目录文件或文件夹不为空          
                {
                    foreach (FileInfo f in file) //显示当前目录所有文件  
                    {
                        if (extName.ToLower().IndexOf(f.Extension.ToLower()) >= 0)
                        {
                            lst.Add(f);
                        }
                    }
                    foreach (string d in dir)
                    {
                        getFile(d, extName, lst);//递归  
                    }
                }
                return lst;
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }
    }