Create folder structure

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VB

I need a way to automatically create the project folder structure across multiple drives and set the permissions for them properly.

Something like Robocopy to copy from a Template directory that has all the correct permissions set.

This is what I have:

Private Sub btnCreate_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCreate.Click
Try
Directory.CreateDirectory(Path(".") & "\" & txtProject.Text)
'Creating a directory by specifying a path in the TextBox, of the form C:\BDL\
'Instead of using a TextBox you can directly type the location of the directory like this
'Directory.CreateDirectory("T:\BDL\")
Catch ex As Exception
End Try
MsgBox("Directory " & txtProject.Text & " Created")
End Sub

I want to make sure that user puts only numbers. -the file does not exists
How do i do that?
Thank you