VB.NET Language in a Nutshell, Second Edition

Name

Directory.GetDirectoryRoot Method

Class

System.IO.Directory

Syntax

Directory.GetDirectoryRoot(path)

path (required; String)

A valid path to a directory

Return Value

A String containing the name of the root directory of path

Description

Returns the name of the root directory of the drive on which path resides (assuming that path is valid). For example, the code:

Directory.GetDirectoryRoot("c:\program files\accessories")

returns the string C:\ as the root directory.

Rules at a Glance

• path can be either an absolute path (a complete path from the root directory to the target directory) or a relative path (starting from the current directory to the target directory).

• path can be either a path on the local system, the path of a mapped network drive, or a UNC path. For example, the code:

  Directory.GetDirectoryRoot("\\Pentium\C\AFolder")

  returns \\Pentium\C, and if the folder \\Pentium\C\AFolder maps to the network drive Z, then:

  Directory.GetDirectoryRoot("Z:\temp")

  returns Z:\.

• path cannot contain wildcard characters.

See Also

Directory.GetParent Method