1、Editing self-referential tables using a treeview control?

http://social.msdn.microsoft.com/Forums/en-US/lightswitchgeneral/thread/a95034f4-3a90-4904-910d-fb60f1f7d413

2、Trees in SQL  Some answers to some common questions about SQL trees and hierarchies

     http://www.ibase.ru/devinfo/DBMSTrees/sqltrees.html

3、LightSwitch TreeView Custom Control

      http://social.msdn.microsoft.com/Forums/en-US/lsextensibility/thread/bcdaa86f-459a-47d3-853a-3c5e56eb088a?prof=required

4\上传文件 UODOWN 控件的扩展：How to upload files in LS using the DevExpress SL upload controlLIGHTSWITCH 的树控件设计！_LIGHTSWITCH

      http://social.msdn.microsoft.com/Forums/en-US/lightswitchgeneral/thread/eadf8007-0760-4e38-8f6f-2aa32ccf135e