When it is called by trusted applications, creates a subdirectory or subdirectories on the specified path.
Assembly: mscorlib (in mscorlib.dll)
- Type: System.String
The specified path. This cannot be a different disk volume or Universal Naming Convention (UNC) name.
Return ValueType: System.IO.DirectoryInfo
The last directory specified in path.
path does not specify a valid file path or contains invalid DirectoryInfo characters.
path is null.
The specified path is invalid, such as being on an unmapped drive.
The subdirectory cannot be created.
A file or directory already has the name specified by path.
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.
The caller does not have code access permission to create the directory.
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.
path contains a colon character (:) that is not part of a drive label ("C:\").
The specified path can be relative to this instance of the DirectoryInfo class.
Silverlight for Windows PhoneThis 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.
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.