How to use environment variables in Path.Combine()?

Question

I am trying to read in from a file where a folder path is specified using environment variable shortcuts, like the following:

source          dest
filename.ext    %programfiles(x86)%\FolderName\

I get the following error when trying to use Path.Combine() to concatenate this with a filename:

"Could not find a part of the path %programfiles(x86)%\FolderName\filename.ext"

Do I have to parse environment variables (like %programfiles(x86)% and %appdata%) out and manually replace them, or is there a another way to have these resolved? Seems like a common use case for copying files, eg patching.

Answer 1

使用它来获取环境变量路径

var path = Environment.ExpandEnvironmentVariables(value);