C#查看文件目錄操作、復制、替換

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 + "\n";
                DirectoryInfo di = new DirectoryInfo("E:/bbb");
                DirectoryInfo di2 = new DirectoryInfo("E:/ccc");
                CopyFilesRecursively(di,di2);  //復制目錄文件到新文件夾
                //DeleteFolder("E:/syjd_bak/abc"); //刪除文件目錄
                  DeleteBaiDuShangQiaoJStream("E:/ccc/myfile.txt"); //替換目錄文件夾內容
               

            }
        }

        //刪除文件目錄
        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);

            }
        }
        //復制文件到其它目錄
        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);
            }
        }
        //替換文件相關內容
        private static void DeleteBaiDuShangQiaoJStream(string FilePath)
        {
            string _html = "";
            //打開文件流
            FileStream file = new FileStream(FilePath, FileMode.Open, FileAccess.Read);
            //獲取輸出流
            StreamReader sr = new StreamReader(file);
            //讀取文件所有內容並轉為字符串
            _html = sr.ReadToEnd();
            //釋放資源
            sr.Dispose();
            file.Dispose();
            //通過正則匹配，刪除百度商橋的相關JS文件
            _html = _html.Replace(@"Windows 7", @"Windows 2007");
            //覆蓋文件流
            file = new FileStream(FilePath, FileMode.Truncate, FileAccess.Write);
            //獲取輸入流
            StreamWriter sw = new StreamWriter(file);
            //覆蓋
            sw.WriteLine(_html);
            //釋放資源
            sw.Dispose();
            file.Dispose();
        }
        //顯示當前目錄下的所有文件
        public static List<FileInfo> getFile(string path, string extName, List<FileInfo> lst)
        {
            try
            {

                string[] dir = Directory.GetDirectories(path); //文件夾列表  
                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) //當前目錄文件或文件夾不為空          
                {
                    foreach (FileInfo f in file) //顯示當前目錄所有文件  
                    {
                        if (extName.ToLower().IndexOf(f.Extension.ToLower()) >= 0)
                        {
                            lst.Add(f);
                        }
                    }
                    foreach (string d in dir)
                    {
                        getFile(d, extName, lst);//遞歸  
                    }
                }
                return lst;
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }
    }