Copy random 25 files from 1300 to another folder with VBA

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I have 1300 excel files on a server, with revenues in them. I need to compare these revenues with one pivot file to make sure the revenues are the same in the actual 2 files. Because it is on a server, opening all of them from a server would be pretty slow, thats why I want to copy a sample of them (25 excel files) to my compter first, and then run my comparison macro from this folder. But I want to make the copying process automatized, so I somehow need to select randomly 25 of these files, and then copy it to an other folder. I have a code to copy all of the files from one folder to another, but I need the random selection to it. Thanks.

 Sub Copy_Folder()

 Dim FSO As Object
    Dim FromPath As String
    Dim ToPath As String
FromPath = "C:\Users\NagyI2\Documents\Macro testing"
ToPath = "C:\Users\NagyI2\Documents\Copy test"

If Right(FromPath, 1) = "\" Then
    FromPath = Left(FromPath, Len(FromPath) - 1)
End If

If Right(ToPath, 1) = "\" Then
    ToPath = Left(ToPath, Len(ToPath) - 1)
End If

Set FSO = CreateObject("scripting.filesystemobject")

If FSO.FolderExists(FromPath) = False Then
    MsgBox FromPath & " doesn't exist"
    Exit Sub
End If

FSO.CopyFolder Source:=FromPath, Destination:=ToPath

End Sub

The files-collection of a folder-object gives a list of files in that folder. However, you cannot access to one of the files by index, just by name. So the following code creates first an array with the names of all files. Then, in a second loop, a file index is created by random, and the file is copied to the destination folder.

Dim FSO As Object, folder a Object, file as Object
Set folder = fso.GetFolder(FromPath)
Dim fList() As String, i As Long
ReDim fList(1 To folder.Files.Count)

For Each file In folder.Files
    i = i + 1
    fList(i) = file.Name
Next file

Dim copyCount As Long, fIndex As Long
copyCount = 0
Do While copyCount < 25 And copyCount < folder.Files.Count
    fIndex = Int(Rnd * folder.Files.Count) + 1
    If fList(fIndex) <> "" Then
        Set file = folder.Files(CStr(fList(fIndex)))
        file.Copy ToPath, True
        fList(fIndex) = ""    '  Mark this file as copied to prevent that it is picked a 2nd time
        copyCount = copyCount + 1
    End If
Loop

Copy random 25 files from 1300 to another folder with VBA, Copy random 25 files from 1300 to another folder with VBA. I have 1300 excel files on a server, with revenues in them. I need to compare these revenues with� Excel VBA FileCopy Function. File Copy is an inbuilt vba function used to copy the file from one location to another mentioned location. To use this function, we need to mention the current file path and destination file path. Ok, let us look at the syntax of the FileCopy function. Source: This is nothing but from where we need to copy the file

A possible solution for your task is:

  1. Read all filenames in FromPath in an array.
  2. In a loop with 25 runs generate a random number based on the length of the array.
  3. Ensure that you did not copy by chance a file you already have copied.

Скопируйте random 25 файлов из 1300 в другую папку с VBA , files -коллекция объекта folder - дает список файлов в этой папке. Однако вы не можете получить доступ к одному из файлов по индексу, только по� Here is the another Example to show you different situations while copying file from one location to another folder. Case 1: If file does not existing in the source location. VBA Program to check if file exists or not in the specified location. Case 2: If file is exists in the source location. VBA code should copy the source file to the

it must be very fast

Sub CopyFiles()
    Dim objRows() As String
    Dim fso As Object
    Dim randNum As Long
    Source = "C:\Users\NagyI2\Documents\Macro testing\"
    Destination = "C:\Users\NagyI2\Documents\Copy test\"
    randNum = 25 ' set random number
        results = CreateObject("WScript.Shell").Exec("CMD /C DIR """ & Source & "*.xls*"" /S /B /A:-D").StdOut.ReadAll ' get file list in Source
        objRows = Split(results, vbCrLf) ' move list to array
        ReDim Preserve objRows(UBound(objRows) - 1) ' trim last empty value
        sList = getRand(randNum, objRows) ' get randomized list
            Set fso = VBA.CreateObject("Scripting.FileSystemObject")
                For Each sFile In sList
                    Call fso.CopyFile(sFile, Destination, True) ' copy randomized files
                Next sFile
End Sub

Function getRand(rKey As Long, sArr As Variant) As Variant
    Randomize
    Set dict = CreateObject("Scripting.Dictionary")
    upperbound = UBound(sArr) 
    lowerbound = LBound(sArr)
    If rKey > upperbound Then getRand = sArr: Exit Function
    For i = 1 To rKey
        key = Int((upperbound - lowerbound + 1) * Rnd + lowerbound)
        If Not dict.Exists(key) Then dict.Add key, sArr(key) Else i = i - 1
    Next i
    getRand = dict.Items
End Function

How to copy 100 files to a folder based on first and last file name , Copy random 25 files from 1300 to another folder with VBA. I have 1300 excel files on a server, with revenues in them. I need to compare these revenues with� Related: Create Folder and Sub Folders in another Folder and Copy Source Files to the Sub Folders It is a very practical scenario and I have come across many such requirements in the past. If the books are in our inventory (in the folder) then the File Status column will show the status “ On Hand ” and the files will be copied or moved from

Mine data from .txt to excel spreadsheet with vba script, Copy random 25 files from 1300 to another folder with VBA. I have 1300 excel files on a server, with revenues in them. I need to compare these revenues with� The destination location (folder) where the source folders are to be copied to. overwrite Optional. If True will overwrite folders with same name in destination folder. If True it will omit folders for which there is an existing folder in the destination folder. VBA CopyFolder Examples

Copy and Move files and folders, For one file you can use the VBA Name and FileCopy function and for entire folders or a lot of files use the other macro example's on this page. Sub� VBA allows you to copy a file, using the FileSystemObject. In this tutorial, you will learn how to copy and rename a specific file. If you want to learn how to rename a file, you can click on this link: VBA Rename File . Copy A File / Workbook. We will show how to copy the existing file Sample file 1.xlsx in the folder VBA Folder. In this

How to create a list of random unique numbers, I have copied the above formula and the attached file to expand the range, though any modifications to either always results in #NUM error. Do� The files-collection of a folder-object gives a list of files in that folder. However, you cannot access to one of the files by index, just by name. So the following code creates first an array with the names of all files. Then, in a second loop, a file index is created by random, and the file is copied to the destination folder.

Comments
  • show you comparison macro, as you may do not need to copy and open all files to do that
  • RND() will return a random value between 0 and 1. INT(RND()*1300) will thus return a random value between 0 and 1300. So IF INT(RND()*1300) < 25 THEN will trigger, on average, about 25 times in your 1300 files
  • you can list files in array, then shuffle the array (stackoverflow.com/questions/29358857/…) and keep the first 25 elements