App.config 设置，环境变量作为部分路径 [英] App.config settings, environment variable as partial path

问题描述

我刚开始修改 app.config 和 xml，目前正在对一些我没有编写的代码进行重构.
目前我们有一个看起来像这样的片段:

I'm new to tinkering with app.config and xml, and am currently doing some refactoring in some code I haven't written.
Currently we have a snippet which looks like this:

<setting name="FirstSetting" serializeAs="String">
  <value>Data Source=C:\Documents and Settings\All Users\ApplicationData\Company ...;Persist Security Info=False</value>

我想做的是让它指向类似 ${PROGRAMDATA}\Company\...

What I'd like to do is have it instead point to something like ${PROGRAMDATA}\Company\...

我怎样才能做到这一点，记住 PROGRAMDATA 并不总是指向 C:\ProgramData ?

How can I achieve this, keeping in mind that PROGRAMDATA will not always point to C:\ProgramData ?

推荐答案

我真的不想按照其他回复在代码中更改它，因为这消除了将其作为配置设置的目的.

I didn't really want to change it in code as per the other responses, since that removes the purpose of having it as a config setting.

事实证明，%ProgramData%\Company... 是在这种情况下使用环境变量的正确方法.

As it turns out, %ProgramData%\Company... is the proper way of using environment variables in this context.

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