How to: Create a Directory in Visual Basic
Use the CreateDirectory method of the My.Computer.FileSystem object to create directories.
If the directory already exists, no exception is thrown.
To create a directory
Use the CreateDirectory method by specifying the full path of the location where the directory should be created. This example creates the directory NewDirectory in C:\Documents and Settings\All Users\Documents.
My.Computer.FileSystem.CreateDirectory( "C:\Documents and Settings\All Users\Documents\NewDirectory")
The following conditions may cause an exception:
The directory name is malformed. For example, it contains illegal characters or is only white space (ArgumentException).
The parent directory of the directory to be created is read-only (IOException).
The directory name is Nothing (ArgumentNullException).
The directory name is too long (PathTooLongException).
The directory name is a colon ":" (NotSupportedException).
The user does not have permission to create the directory (UnauthorizedAccessException).
The user lacks permissions in a partial-trust situation (SecurityException).