Specify environmental variables as commandline parameter in a debug session of VisualStudio C#

Question

I want to use an environment variable as a commandline parameter in a debug session. So Project Properties->Debug->Command line arguments: %TEMP% gives me not the temp path as a parameter rather than the string "%TEMP%".

Of course I could resolve the environment variable to a path programmatically or copy past the correct path. But I want just to know, if an envvariable works and when, how it works?!

Does someone know how I can specify an envvar as a commandline parameter in VS debug commandline arguments?

Answer 1

If the program is launched by visual studio then it inherits VS's environment variables. VS gets its environment variables when it starts. So:

1. Change/set the environment variable
2. Restart Visual Studio
3. Launch/debug your program