Creates a subdirectory or subdirectories on the specified path with the specified security. The specified path can be relative to this instance of the System.IO.DirectoryInfo class.
The last directory specified in path.
Any and all directories specified in path are created, unless some part of path is invalid. The path parameter specifies a directory path, not a file path. If the subdirectory already exists, this method does nothing.
Path names are limited to 248 characters.
For a list of common I/O tasks, see Common I/O Tasks.