The ASP.NET ISAPI extension is a Win32 DLL and does not host managed code.

NET ISAPI扩展是一个win32 DLL，并不为托管代码提供宿主。

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For ASP.NET pages, IIS routes the message to the aspnet_isapi.dll isapi extension.

对于ASP.NET页面，IIS会将此消息路由到aspnet _ isapi . dll isapi扩展。

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When the request arrives, IIS examines the resource type and calls into the ASP.NET ISAPI extension.

当请求到达，IIS检查资源类型并调用到asp.net ISAPI扩展。

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