To go to the folder in the root directory: when calling the file path instead of the query: "C: \ Root folder you want" Use: "\ Root Folder You Want".
But it depends on the system, because people have different folders (for example, Program Files vs. Program Files (x86)), in which case you can use the System.Environment function to find the version of the OS that they run, etc. d.
The documentation can be found here: Environment Methods
Visual Studio EDIT, INSERT SNIPPET, .