递归算法－－遍历指定目录下的子目录及文件（C＃.net）

//递归算法－－遍历指定目录下的子目录及文件（C＃.net），希望有用，顺带数据入库 

  private void button1_Click(object sender, System.EventArgs e)
  {
   Conn.Open();

   displayItems(textBox1.Text);
   //MessageBox.Show(dirs.Length.ToString());
   Conn.Close();
  }
 /*这里是递归算法的遍历程序部分*/
  private void displayItems(string path)
  {
   try
   {
    DirectoryInfo di=new DirectoryInfo(path);
    FileInfo[] SubFiles=di.GetFiles();

    FileSystemInfo[] dirs = di.GetDirectories();

      foreach(FileInfo fileNext in SubFiles)
      {
     /*-----------------------------------------------------------------------------------------------------*/
       string path_total=path + "/" +fileNext.ToString();
       int path_start=path_total.IndexOf("/")+1;
       int path_end=path_total.LastIndexOf("/");
       string path_name;
       if(path_start-1==path_end)
       {
         path_name="";
       }
       else
       {
         path_name=path.Substring(path_start,path_end-path_start);
       }
       switch(path_start.ToString())
       {
        case "....":
         break;
       }
     /*-----------------------------------------------------------------------------------------------------*/
       string sql="insert into pic_data(pic_name,pic_path,pic_time) values(’"+ fileNext.ToString() +"’,’"+ path_name +"’,’"+ DateTime.Now.ToString() +"’)";
       SqlCommand Cmd=new SqlCommand(sql,Conn);
       if(checkBox_insertdb.Checked==true)
       Cmd.ExecuteNonQuery();

       richTextBox1.Text=richTextBox1.Text + "\r\n" + path + "/" +fileNext.ToString() + "  （"+sql+"）";
      }
    foreach(DirectoryInfo diNext in dirs)
    {
     displayItems(path + "/" + diNext.ToString());
    }
   }
   catch(Exception ex)
   {
    richTextBox1.Text=ex.Message +"\r\n"+ richTextBox1.Text;
   }

  } 
 }