Looping in folders

I had to copy a 30 Gb folder which contains folders and subfolders and a lot of files but the copy failed at about 22 Gb copied.

I would like to create a application that compare each files from the source folder with the destination folder and copy the files that changed and the one that don't exist.

The problem is that I don't know how to do the loop to get all files.

I know how to loop, but in the main loop, I'll have to add another loop, and another one in this one ...

I don't know how to proceed.

Can I have an example on how to list all files ?

You need to create a 'recursive' function

create a function that scans the folder pass into the function... if it finds another folder... call the SAME function again passing the new folder in.. it will loop untill it finishes the return to where it was...

example: (Not real code! LOL)

Public Function SearchFolders(Fldr as Folder)
dim FLE as file
for each FLE in FLDR
if FLE Type is Folder Then Call SearchFolder(FLE)
Debug.print FLE.Name
Next
End function

get it?

Here is a working example: (You need a ref to the MS Scipting runtime)

VB Code:

Public Function RecurseFolderList(FolderName As String)  As Boolean
    
    On Error Resume Next
    Dim fso, f, fc, fj, f1
    
    Set fso = CreateObject("Scripting.FileSystemObject")
    
    If Err.Number > 0 Then
        RecurseFolderList = False
        Exit Function
    End If
    
    On Error GoTo 0
    If fso.FolderExists(FolderName) Then
        
        Set f = fso.GetFolder(FolderName)
        Set fc = f.Subfolders
        Set fj = f.Files
        'For each subfolder in the Folder
        For Each f1 In fc
            'Do something with the Folder Name
            Debug.Print f1
            'Then recurse this function with the sub-folder to get any'
            ' sub-folders
            RecurseFolderList (f1)
        Next
        
        'For each folder check for any files
        For Each f1 In fj
            Debug.Print f1
        Next
        
        Set f = Nothing
        Set fc = Nothing
        Set fj = Nothing
        Set f1 = Nothing
        
    Else
        RecurseFolderList = False
    End If
    
    Set fso = Nothing
    
End Function

Call RecurseFolderList("C:\")

and watch your debug(immediate) window ;) have fun!

Thanks, but how can I compare file's last modified date ?

Since he mentioned FSO, try to look up FSO if your interested in the FSO implementation.

DateLastModified Property


Description

Returns the date and time that the specified file or folder was last modified. Read-only.

Syntax

object.DateLastModified

The object is always a File or Folder object.

Remarks

The following code illustrates the use of the DateLastModified property with a file:

Sub ShowFileAccessInfo(filespec)
Dim fs, f, s
Set fs = CreateObject("Scripting.FileSystemObject")
Set f = fs.GetFile(filespec)
s = UCase(filespec) & vbCrLf
s = s & "Created: " & f.DateCreated & vbCrLf
s = s & "Last Accessed: " & f.DateLastAccessed & vbCrLf
s = s & "Last Modified: " & f.DateLastModified
MsgBox s, 0, "File Access Info"
End Sub