How to get current windows directory e.g. C:\ in C#

Question

As the title suggests, how can you get the current OS drive, so you could add it in a string e.g.:

MessageBox.Show(C:\\ + \"My Documents\");

Answer 1

You can use Environment.CurrentDirectory to get the current directory. Environment.SystemDirectory will give you the system folder (ie: C:\Windows\System32). Path.GetPathRoot will give you the root of the path:

var rootOfCurrentPath = Path.GetPathRoot(Environment.CurrentDirectory);
var driveWhereWindowsIsInstalled = Path.GetPathRoot(Environment.SystemDirectory);