如何访问的线程或计时器HttpServerUtility.MapPath方法？ [英] How to access the HttpServerUtility.MapPath method in a Thread or Timer?

问题描述

我在Asp.Net应用程序中使用 System.Timers.Timer ，我需要使用 HttpServerUtility.MapPath 这似乎方法是仅通过 HttpContext.Current.Server.MapPath 。
问题是， HttpContext.Current 是空在 Timer.Elapsed 事件触发。

I use a System.Timers.Timer in my Asp.Net application and I need to use the HttpServerUtility.MapPath method which seems to be only available via HttpContext.Current.Server.MapPath. The problem is that HttpContext.Current is null when the Timer.Elapsed event fires.

有另一种方式得到一个HttpServerUtility对象的引用？
我可以在我的类的构造函数注入它。是否安全？我怎样才能确保它不会被垃圾在当前请求结束时收集的？

Is there another way to get a reference to a HttpServerUtility object ? I could inject it in my class' constructor. Is it safe ? How can I be sure it won't be Garbage Collected at the end of the current request?

谢谢！

推荐答案

这是可以使用 HostingEnvironment.MapPath（）而不是 HttpContext.Current .Server.MapPath（）

我没有在一个线程或定时器事件尝试过，但。

I haven't tried it yet in a thread or timer event though.

一些（非活）解决方案我认为是;

Some (non viable) solutions I considered;

• 我在乎的 HttpServerUtility 的唯一方法是的MapPath 。因此，作为一种替代我可以使用 AppDomain.CurrentDomain.BaseDirectory 和建设从此我的路径。 但是，这将如果应用程序使用的虚拟目录失败（矿一样）。

• The only method I care about on HttpServerUtility is MapPath. So as an alternative I could use AppDomain.CurrentDomain.BaseDirectory and build my paths from this. But this will fail if your app uses virtual directories (Mine does).

另一种方法：
加入我需要将在全球类的所有路径。解决的Application_Start 这些路径。

Another approach: Add all the paths I need to the the Global class. Resolve these paths in Application_Start.

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