[Path or program category] Paths related to the current application [Class and members to use] 
The Application class has static members to obtain certain paths, such as StartupPath, ExecutablePath, LocalUserAppDataPath, and CommonAppDataPath. The GetTempPath method of the System.IO.Path returns the path of the temporary folder. The GetCurrentDirectory method of the System.IO.Directory class returns the application's current executing directory. The RootDirectory property of the DriveInfo class represents the specified drive's root directory.