HTTPModule与Session_Start

最新推荐文章于 2018-06-26 11:22:17 发布

原创最新推荐文章于 2018-06-26 11:22:17 发布 · 2.2k 阅读

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#httpmodule #session #module #access

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本文解释了为何在HTTPModule中不能直接使用Session_Start，并提供了一种通过注册SessionStateModule的Start事件来实现类似功能的方法。

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HTTPModule中不能直接写Session_Start，这是为什么？

有时看书能看到Session_Start不能在HTTPModule中使用，不清楚为什么。

今天找到一个答案：http://forums.asp.net/t/1156462.aspx

Session_Start will actually be mapped to the Start event of the System.Web.SessionState.SessionStateModule class. That is already an HttpModule. You can access the modules in the pipeline through the Modules property of the HttpApplication. If you cast the session module to a System.Web.SessionState.SessionStateModule, you should have access to the Start and End events. I have actually not tried this, so let me know if it works.

Thank you! This explination really helped.
Here is the code to call in your HTTPModule's Init that assumes you have a method named Session_Start:

1    IHttpModule module = context.Modules["Session"];
2    if (module.GetType() == typeof(SessionStateModule))
3    {
4        SessionStateModule stateModule = (SessionStateModule) module;
5        stateModule.Start += (Session_Start);
6    }