• Article

Directory.CreateDirectory Method

Microsoft Silverlight will reach end of support after October 2021. Learn more.

When it is called by trusted applications, creates all directories and subdirectories as specified by path.

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

Syntax

'Declaration
<SecuritySafeCriticalAttribute> _
Public Shared Function CreateDirectory ( _
    path As String _
) As DirectoryInfo

[SecuritySafeCriticalAttribute]
public static DirectoryInfo CreateDirectory(
    string path
)

Parameters

Return Value

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

Exceptions

Exception Condition
IOException

The directory specified by path is read-only.
UnauthorizedAccessException

The caller does not have the required permission.
ArgumentException

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

-or-

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

path is nulla null reference (Nothing in Visual Basic).
PathTooLongException

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.
DirectoryNotFoundException

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

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

Remarks

Platform Notes

Silverlight for Windows Phone Silverlight for Windows Phone

 This member has a SecurityCriticalAttribute attribute on Silverlight for Windows Phone, because the attribute was present in Silverlight 3. This attribute restricts this member to internal use. Application code that uses this member throws a MethodAccessException.

Version Information

Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.