当前位置: 首页 > 图文教程 > 网络编程 > ASP > 关于释放session的两篇文章(一)

ASP
ASP编程入门进阶(十二):ASP技巧累加(一)
ASP编程入门进阶(十三):Ad & Content Rotator
ASP编程入门进阶(十四):Browser & Linking
ASP编程入门进阶(十五):组件Counters
一些简单的ASP练习
ASP编程入门进阶(十六):FSO组件之驱动器操作
ASP编程入门进阶(十七):FSO组件之文件夹操作
ASP编程入门进阶(十八):FSO组件之文件操作(上)
ASP编程入门进阶(十八):FSO组件之文件操作(中)
ASP编程入门进阶(十八):FSO组件之文件操作(下)
ASP编程入门进阶(十九):ASP技巧累加(二)
ASP中有关双引号,单引号以及&号的解释
ASP编程入门进阶(二十):ADO组件之显示数据记录
ASP编程入门进阶(二十):ADO组件之插入数据记录
ASP编程入门进阶(二十):ADO组件之分页程序
ASP编程入门进阶(二十):ADO组件之修改数据记录
ASP编程入门进阶(二十):ADO组件之删除数据记录
ASP初学者常犯的几个错误(ZT)
无组件上传图片之文件采用方案
ASP编程入门进阶(二十):ADO组件之查询数据记录

ASP 中的 关于释放session的两篇文章(一)


出处:互联网   整理: 软晨网(RuanChen.com)   发布: 2009-11-03   浏览: 237 ::
收藏到网摘: n/a

  If you are using ASP 3.0 (the version of ASP that comes with Windows 2000 / IIS 5) then you can use the following syntax:

Session.Contents.Remove "name"

where Name is the name of the Session variable you wish to remove. Removing Session variables in this way has its advantages over using the following method:

Session("Name") = Null

Namely, the above method (setting a Session variable to Null) only removes the memory associated with the Session variable itself... the Session object still maintains a reference to it, though. Each Session variables is stored in the Session object with a key/item pair, similar to the Scripting.Dictionary object. Therefore, using the Null method above, you are not removing the key from the Session Contents collection that contains the reference to the variable...

With the Remove method that we looked at first, you are removing both the key and item associated with a Session variable. There is also a RemoveAll method that can be used to scrap all of the Session variables completely:

Session.Contents.RemoveAll

Again, the Remove and RemoveAll methods are new to ASP 3.0. If you have ASP 2.0, you will need to use the Null method