递规篇历路径之 使用正则过滤( 将符合正则的名称用另种正则格式替换掉 )某个路径下的所有文件或文件夹的完整路径

  private void btn_open_Click(object sender, EventArgs e)
        {
            if (folderBrowserDialog1.ShowDialog() == DialogResult.OK)
            {
                tbox_way.Text = folderBrowserDialog1.SelectedPath;               
            }

        }

        #region
        /// <summary>
        /// 使用递归 篇历目录下的所有文件或文件夹
        /// </summary>
        /// <param name="fsinfo">FileSystemInfo数组参数</param>
        /// <param name="swt">StreamWriter写入流对像</param>
        public void Gets(FileSystemInfo[] fsinfo,StreamWriter swt)
        {
            foreach (FileSystemInfo s in fsinfo)
                {
                    if (s is DirectoryInfo)
                    {
                        DirectoryInfo drc = new DirectoryInfo(s.FullName);
                        int i = drc.GetDirectories().Count() + drc.GetFiles().Count();
                        if (Regex.IsMatch(drc.FullName, tbox_first.Text))  //检查目录文件夹路径是否符合正则
                        {
                            Regex r = new Regex(tbox_first.Text);
                            string str = r.Replace(drc.FullName, tbox_new.Text);  //使用正则替换符合表达式的目录
                            swt.WriteLine("文件夹名:" + str + "    " + "子目录数:" + i.ToString() + "    ");

                        }
                        else
                        {
                            swt.WriteLine("文件夹名:" + drc.FullName + "    " + "子目录数:" + i.ToString() + "    ");
                        }
                        FileSystemInfo[] fsnext = drc.GetFileSystemInfos();
                        Gets(fsnext, swt);    //递规调用
                        
                    }
                    else
                    {
                        FileInfo finfo = new FileInfo(s.FullName);
                        if (Regex.IsMatch(finfo.FullName, tbox_first.Text))    //检查目录文件路径是否符合正则
                        {
                            Regex r = new Regex(tbox_first.Text);
                            string str = r.Replace(finfo.FullName, tbox_new.Text);  //使用正则替换符合表达式的目录
                            swt.WriteLine("文件名:" + str + "    " + "子目录数: 0" + "    " + "大小: " + finfo.Length);

                        }
                        else
                        {
                            swt.WriteLine("文件名:" + finfo.FullName+ "    " + "子目录数: 0" + "    " + "大小: " + finfo.Length);
                        }
                    }
                }
        }
        #endregion

        private void btn_go_Click(object sender, EventArgs e)
        {
            saveFileDialog1.Filter = "*.txt(文本文件)|*.txt";
            if (tbox_way.Text != "" && tbox_first.Text != "" && tbox_new.Text != "")
            {
                if (saveFileDialog1.ShowDialog() == DialogResult.OK)
                {
                        DirectoryInfo dic = new DirectoryInfo(tbox_way.Text); 
                        FileSystemInfo[] fsinfo = dic.GetFileSystemInfos();
                        StreamWriter swt = new StreamWriter(saveFileDialog1.FileName);
                        Gets(fsinfo, swt);   //调用递规方法
                        swt.Close();
                }
            }
            else
            {
                MessageBox.Show("输入不能为空!!");
            }
        }