Creates a subdirectory or subdirectories on the specified path.
Assembly: mscorlib (in mscorlib.dll)
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:\").