• Article

DirectoryInfo.CreateSubdirectory Method

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When it is called by trusted applications, creates a subdirectory or subdirectories on the specified path.

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

Syntax

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

[SecuritySafeCriticalAttribute]
public DirectoryInfo CreateSubdirectory(
    string path
)

Parameters

  • path
    Type: System.String
    The specified path. This cannot be a different disk volume or Universal Naming Convention (UNC) name.

Return Value

Type: System.IO.DirectoryInfo
The last directory specified in path.

Exceptions

Exception Condition
ArgumentException

path does not specify a valid file path or contains invalid DirectoryInfo characters.
ArgumentNullException

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

The specified path is invalid, such as being on an unmapped drive.
IOException

The subdirectory cannot be created.

-or-

A file or directory already has the name specified by path.
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. The specified path, file name, or both are too long.
SecurityException

The caller does not have code access permission to create the directory.

-or-

The caller does not have code access permission to read the directory described by the returned DirectoryInfo object. This can occur when the path parameter describes an existing directory.
NotSupportedException

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

Remarks

The specified path can be relative to this instance of the DirectoryInfo class.

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.