HttpRequest.ServerVariables与HttpRequest.UserAgent属性VB.net [英] HttpRequest.ServerVariables vs HttpRequest.UserAgent Properties VB.net

问题描述

用于确定用户代理的这两个属性之间的区别(如果有)和优点/缺点是什么?

What would be the difference (if any) and advantages/disadvantages between these two properties used to determine the user agent?

Dim strUserAgt as String
userAgent = Request.userAgent

vs.

Dim strUserAgt as String = Request.ServerVariables("HTTP_USER_AGENT")

推荐答案

来源:如何确定浏览器类型ASP.NET中没有BrowserType对象的服务器端代码

在ASP.NET中，您可以访问Request.ServerVariables集合或 使用新的Request.UserAgent属性检索HTTP_USER_AGENT 标头值.

In ASP.NET, you can access the Request.ServerVariables collection or use the new Request.UserAgent property to retrieve the HTTP_USER_AGENT header value.

没有什么区别，两者都会检索相同的内容.

There are no difference, both will retrieve same thing HTTP_USER_AGENT header value.

检查 Request.ServerVariables集合和 IIS服务器变量想深入挖掘.这些服务器变量收集值在某种程度上也取决于IIS版本.

Check Request.ServerVariables Collection and IIS Server Variables if you want to dig it in deep. These server variables collection values somewhat depend ond the IIS version also.

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