如何在一个IHttpModule中使用404结束请求？

我在写一个新的IHttpModule。 我想用404使用BeginRequest事件处理程序使某些请求无效。 我如何终止请求并返回404？

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你可以显式设置状态码为404，如下所示：

HttpContext.Current.Response.StatusCode = 404; 
HttpContext.Current.Response.End();

响应将停止执行。

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你可以试试

throw new HttpException(404, "File Not Found");

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另一种可能性是：

HttpContext.Current.Response.StatusCode = 404; 
HttpContext.Current.Response.Flush(); // Sends all currently buffered output to the client.
HttpContext.Current.Response.SuppressContent = true;  // Gets or sets a value indicating whether to send HTTP content to the client.
HttpContext.Current.ApplicationInstance.CompleteRequest(); // Causes ASP.NET to bypass all events and filtering in the HTTP pipeline chain of execution and directly execute the EndRequest event.

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