public static void CopyDirectory(string sourceDirPath, string saveDirPath)
        {                         
            try
            {
                if (!Directory.Exists(sourceDirPath))
                {
                    Console.WriteLine("源目录不存在，请核对！");
                }

                if (!Directory.Exists(saveDirPath))
                {
                    Directory.CreateDirectory(saveDirPath);
                }
                string[] files = Directory.GetFiles(sourceDirPath);

                foreach (string file in files)
                {
                    string pFilePath = saveDirPath + @"\" + Path.GetFileName(file);
                    if (File.Exists(pFilePath))
                        continue;
                    File.Copy(file, pFilePath, true);
                }

                string[] dirs = Directory.GetDirectories(sourceDirPath);
                foreach (string dir in dirs)
                {
                    CopyDirectory(dir, saveDirPath + @"\" + Path.GetFileName(dir));
                }
            }
            catch (Exception)
            {

            }
        }