Visual Basic 6's MkDir command, as well as the DOS MD command, can create only one subdirectory and fail if any subdirectory on the specified path doesn't exist:
' This VB6 statement fails if C:\MyApp doesn't exist
MKDIR "c:\MyApp\MyDir"
Conversely, the Directory.CreateDirectory method of Visual Basic .NET creates a directory, and all the intermediate directories on the path, if necessary:
' Next VB.NET line works even if the C:\MyApp directory doesn't exist yet.
Directory.CreateDirectory("C:\MyApp\Data")
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