c# open file, path starting with %userprofile%

Question

I have a simple problem. I have a path to a file in user directory that looks like this:

%USERPROFILE%\\AppData\\Local\\MyProg\\settings.file

Answer 1

Use Environment.ExpandEnvironmentVariables on the path before using it.

var pathWithEnv = @"%USERPROFILE%\AppData\Local\MyProg\settings.file";
var filePath = Environment.ExpandEnvironmentVariables(pathWithEnv);

using(ostream = new FileStream(filePath, FileMode.Open))
{
   //...
}