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Directory.CreateDirectory Method (String)

Creates all directories and subdirectories as specified by path.

Namespace:  System.IO
Assembly:  mscorlib (in mscorlib.dll)

Public Shared Function CreateDirectory ( _
	path As String _
) As DirectoryInfo
Dim path As String 
Dim returnValue As DirectoryInfo 

returnValue = Directory.CreateDirectory(path)


Type: System.String

The directory path to create.

Return Value

Type: System.IO.DirectoryInfo
A DirectoryInfo as specified by path.


The directory specified by path is a file.


The network name was not found.


The caller does not have the required permission.


path is a zero-length string, contains only white space, or contains one or more invalid characters as defined by InvalidPathChars.


path is prefixed with, or contains only a colon character (:).


path is Nothing.


The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters and file names must be less than 260 characters.


The specified path is invalid (for example, it is on an unmapped drive).


path contains a colon character (:) that is not part of a drive label ("C:\").

Any and all directories specified in path are created, unless they already exist or unless some part of path is invalid. The path parameter specifies a directory path, not a file path. If the directory already exists, this method does nothing.

You can create a directory on a remote computer, on a share that you have write access to. UNC paths are supported; for example, you can specify the following for path: \\2009\Archives\December.

Creating a directory with only the colon (:) character is not supported, and will cause a NotSupportedException to be thrown.

The following code example creates and deletes the specified directory.

Imports System
Imports System.IO
Imports Microsoft.VisualBasic

Public Class Test
    Public Shared Sub Main()
        ' Specify the directory you want to manipulate. 
        Dim path As String = "c:\MyDir" 

            ' Determine whether the directory exists. 
            If Directory.Exists(path) Then
                Console.WriteLine("That path exists already.")
            End If 

            ' Try to create the directory. 
            Dim di As DirectoryInfo = Directory.CreateDirectory(path)
            Console.WriteLine("The directory was created successfully at {0}.", Directory.GetCreationTime(path))

            ' Delete the directory.
            Console.WriteLine("The directory was deleted successfully.")

        Catch e As Exception
            Console.WriteLine("The process failed: {0}.", e.ToString())
        End Try 
    End Sub 
End Class

To create the directory C:\Users\User1\Public\Html when the current directory is C:\Users\User1, use any of the following calls to ensure that the backslash is interpreted properly.

In Visual Basic:


In C#:


In C++:


Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0

XNA Framework

Supported in: 3.0, 2.0, 1.0