你怎么一个URL转换为虚拟路径在asp.net中无需人工字符串解析？ [英] How do you convert a url to a virtual path in asp.net without manual string parsing?

问题描述

我已经看到了关于从虚拟到绝对和URL转换类似的问题和答案，但我怎么能一个URL转换为虚拟路径，无需人工字符串解析？

I've seen similar questions and answers regarding conversions from virtual to absolute and url, but how can I convert a url to a virtual path without manual string parsing?

例如：

我要的http：//myserver/home.aspx转换为：〜/ home.aspx

I want "http://myserver/home.aspx" converted to: "~/home.aspx"

我认识上面的例子是一个简单的字符串分析例程，但是我正在寻找一个合适的解决方案，将扩展到URL格式的变化。

I realize the above example would be an easy string parsing routine, but I'm looking for a proper solution that will scale to the changing of the url format.

推荐答案

您可以得到其中大部分来自Uri类：

You can get most of it from the Uri class:

new Uri("http://myserver.com/home.aspx").AbsolutePath

然后你只需要prePEND了〜

Then you just have to prepend the ~

不过，如果你在一个子目录承载的意愿可能会破坏 - 我不认为有一种方式，你正在运行的应用程序的情况下做到这一点特别

Though, that will might break if you host in a subdirectory - I don't think there's a way to do it specifically in the context of the application you're running.

编辑：这可能做到这一点：

This might do it:

VirtualPathUtility.ToAppRelative(new Uri("http://myserver.com/home.aspx").AbsolutePath);

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