ASP.NET - 动态注册在code一个HttpHandler（而不是在web.config中） [英] ASP.NET - Dynamically register an HttpHandler in code (not in web.config)
问题描述
可能重复：结果
<一href=\"http://stackoverflow.com/questions/1888016/any-way-to-add-httphandler-programatically-in-net\">Any方法添加的HttpHandler编程在.NET？
有没有一种方法，我可以动态地在C＃code寄存器的的IHttpHandler ，而不必手动将其添加到系统。在web.config网/ HttpHandlers的部分。
Is there a way I can dynamically register an IHttpHandler in C# code, instead of having to manually add it to the system.web/httpHandlers section in the web.config.
这听起来很疯狂，但我有很好的理由这样做。我建立一个WidgetLibrary，一个网站的所有者可以通过删除一个.dll文件到他们的bin目录中只使用了，想用最少的配置到web.config支持这一点。
This may sound crazy, but I have good reason for doing this. I'm building a WidgetLibrary that a website owner can use just by dropping a .dll file into their bin directory, and want to support this with minimal configuration to the web.config.
推荐答案
我不相信这是可以修改注册HttpHandlers的，一旦AppDomain中运行时，由于可用的处理程序是从网络直接读取的.config 文件，然后缓存在一个私有数据结构。
I don't believe it's possible to modify the registered HttpHandlers once the AppDomain is running because the available handlers is read directly from the web.config file then cached in a private data structure.
如果您知道前期你想它扩展，允许，你可以做的就是这些扩展名映射到一个 HttpHandlerFactory ，然后返回您所选择的处理程序（通过使用动态集加载和反射）。例如：
If you knew upfront which extensions you wanted to allow, you could do is map these extensions to a single HttpHandlerFactory and then return a handler of your choice (by using dynamic assembly loading and reflection). For example:
<add path="*.ch1,*.ch2,*.ch3" verb="*"
type="MyHandlers.MyHandlerFactory, MyHandlers" />
修改的web.config 在运行时会导致AppDomain重新启动。
Modifying the web.config at runtime would cause the AppDomain to restart.
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