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Expertise: Beginner
Nov 19, 1999



Building the Right Environment to Support AI, Machine Learning and Deep Learning

Create Nested Folders In One Call

Suppose you need to create a tree of directories, all at once, in code. For example, you could create the tree C:\1stDir\2ndDir\3rdDir\4thDir with one call simply by feeding that path, as a string, into this procedure:
Public Function MkDirs(ByVal PathIn As String) _
	As Boolean
	Dim nPos As Long
	MkDirs = True  'assume success
	If Right$(PathIn, 1) <>"\" Then PathIn = _
		PathIn + "\"
	nPos = InStr(1, PathIn, "\")
	Do While nPos > 0
		If Dir$(Left$(PathIn, nPos), _
			vbDirectory) = "" Then
			On Error GoTo Failed
				MkDir Left$(PathIn, nPos)
			On Error GoTo 0
		End If
		nPos = InStr(nPos + 1, PathIn, "\")
	Exit Function
	MkDirs = False
End Function 
If any part of the path already exists, the routine creates only the new part. This routine works on strings representing local and mapped drives-those with a letter, colon, and backslash at the beginning. If the drive designation is left out, the directories are created starting at the default directory on the current drive.
Frederick Rothstein
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