思归大哥，帮我看一下，DropDownList为什么要闪一下，http://61.241.229.252/rsgl/rsgl.aspx

[tangjun]

http://expert.csdn.net/Expert/topic/1270/1270664.xml?temp=.5330927
这是以前的帖子

[saucer]

you have too many controls, too much content on a single page, try to use frames

[tangjun]

我首先也是用的Frame，但会遮住我的下拉菜单的，找了很多资料没有解决，所以只好不用frame。

[daqingshu]

用 frames 不遮住下拉菜单有很多方法，好像至少要IE5.5以上才支持，你可以看看msdn的资料，保证有。不过E文很讨厌是吧？

[tangjun]

还有一个问题，如果是控件数过多，那我的TextBox和Label控件为什么不闪呢？

[saucer]

DropDownList control is a windowed control, you can use a tool called Spy++ from Visual Studio to tell the difference

[tangjun]

啊，死惨了啊，这下怎么改啊

[saucer]

1. use frames
2. if you really need that many controls, do not refresh the whole window everytime the user changes selection in the tree, use techniques like hidden frame, remote scripting, ActiveX components like XMLHTTP, Java applet, download behavior, or webservice behavior...to retrieve the user information, then update the screen with javascript

[tangjun]

谢谢，思归大哥，深度实践中，有问题还会请教啊。