VBA : Looping through Filesystem and finding the newest file - excel

Question

In my program, i want to browse through a complex file structure, and display the newest file in it.
The file structure has several folders and subfolders, most of the time empty. So this macro would help to reveal where the latest information is.
Sub newestFile()
Dim FileSystem as object
Dim MostRecentFile as string
Dim MostRecentDate as Date
Dim FileSpec as String
Dim filename as string
'This is where i specify what type of files i would be looking for
FileSpec ="*.*"
'This is where i specify where the master directory is, so that i may look down into it
Directory ="c:\Directory1\"
filename = Dir(Directory & FileSpec)
set Filesystem = CreateObject("Scripting.FileSystemObject")
Do Folder FileSystem.getFolder(Directory)
set ws = Sheets("Events")
ws.cells(2,7).value = MostRecentFile
ws.cells(2,8).value = MostRecentDate
end sub
private Function DoFolder(Directory)
For each subfolder in Directory.SubFolders
DoFolder subfolder
Dim file
For each File in Directory.files
'actions go here
If File <> "" Then
MostRecentFile = File
MostRecentDate = FileDateTime(Directory)
If FileDateTime(File) > MostRecentDate Then
MostRecentFile = File
MostRecentDate = FileDateTime(File)
End if
End If
next
next
End Function
on this code i always loose the variables (MostRecentFile and MostRecentDate) when the code goes to another subfolder.
I expected on having the name of the newest file (of the whole structure), and the date.

Answer 1

As was said, scope is certainly a concern. Here's a loop within the subroutine:
Sub newestFile()
Dim FileSystem As Object ' Needed to get file properties
Set FileSystem = CreateObject("Scripting.FileSystemObject")
Dim MostRecentDate As Date
Dim MostRecentFile As String
Directory = "c:\Directory1\"
FileSpec = "*.txt" '<-- can be "*.xls*" or whatever criteria needed
MyFile = ""
'Loop through text files in Directory finding the most current file
MyFile = Dir(Directory & FileSpec) 'Get first file name in directory
Do While MyFile <> ""
If MostRecentDate < FileSystem.GetFile(Directory & MyFile).DateLastModified Then
MostRecentDate = FileSystem.GetFile(Directory & MyFile).DateLastModified
MostRecentFile = MyFile
End If
MyFile = Dir 'Get next file matching criteria
Loop
set ws = Sheets("Events")
ws.cells(2,7).value = MostRecentFile
ws.cells(2,8).value = MostRecentDate
End Sub

Answer 2

You need to declare the variables at module level
Private MostRecentFile as string
Private MostRecentDate as Date
Sub newestFile()
....
End Sub