為什么我在 VBA 循環中遇到 Dir 錯誤？

Question

我一直在構建一個宏來遍歷文件夾中的一系列文件，並將每個文件復制並粘貼到另一個文件夾中的一系列其他工作表中。 我從下面的這段代碼開始，它可以很好地進行復制和粘貼：

'PURPOSE: To loop through all Excel files in a user specified folder and perform a set task on them
'SOURCE: www.TheSpreadsheetGuru.com

Dim wb As Workbook
Dim myPath As String
Dim myFile As String
Dim myExtension As String
Dim FldrPicker As FileDialog

'Optimize Macro Speed
  Application.ScreenUpdating = False
  Application.EnableEvents = False
  Application.Calculation = xlCalculationManual

'Retrieve Target Folder Path From User
  Set FldrPicker = Application.FileDialog(msoFileDialogFolderPicker)

    With FldrPicker
      .Title = "Select A Target Folder"
      .AllowMultiSelect = False
        If .Show <> -1 Then GoTo NextCode
        myPath = .SelectedItems(1) & "\"
    End With

'In Case of Cancel
NextCode:
  myPath = myPath
  If myPath = "" Then GoTo ResetSettings

'Target File Extension (must include wildcard "*")
  myExtension = "*.xls*"

'Target Path with Ending Extention
  myFile = Dir(myPath & myExtension)

'Loop through each Excel file in folder
  Do While myFile <> ""
    'Set variable equal to opened workbook
      Set wb = Workbooks.Open(Filename:=myPath & myFile)

    'Ensure Workbook has opened before moving on to next line of code
      DoEvents

    'Change First Worksheet's Background Fill Blue
      wb.Worksheets(1).Range("A1:Z1").Interior.Color = RGB(51, 98, 174)

    'Save and Close Workbook
      wb.Close SaveChanges:=True

    'Ensure Workbook has closed before moving on to next line of code
      DoEvents

    'Get next file name
      myFile = Dir
  Loop

'Message Box when tasks are completed
  MsgBox "Task Complete!"

ResetSettings:
  'Reset Macro Optimization Settings
    Application.EnableEvents = True
    Application.Calculation = xlCalculationAutomatic
    Application.ScreenUpdating = True

End Sub

但是，我現在添加了第二個循環來處理多個到多個文件，並且在第二個版本中出現運行時錯誤 5：

myFile = Dir

我已將 myFile 重命名為另一個名稱，因此它與第一個名稱不沖突。

我沒有在這里發布我所有的代碼，因為它更長更復雜。 希望這足以讓你們繼續下去嗎？

Answer 1

您無法使用Dir() Function實現這一點。 為此，您可以使用Scripting.FileSystemObject 。
這是我寫的一個示例，您可以輕松地適應您的代碼：

Dim oFile       As Object
Dim oFSO        As Object
Dim oFolder     As Object
Dim oFiles      As Object

Set oFSO = CreateObject("Scripting.FileSystemObject")
Set oFolder = oFSO.GetFolder(myPath) 'You must initialize this before
Set oFiles = oFolder.Files

'For all files in the folder
For Each oFile In oFiles
    If (oFile Like "*.xls*") Then
        'Set variable equal to opened workbook
        Set wb = Workbooks.Open(Filename:=oFile)

        'Ensure Workbook has opened before moving on to next line of code
         DoEvents

        'Change First Worksheet's Background Fill Blue
        wb.Worksheets(1).Range("A1:Z1").Interior.Color = RGB(51, 98, 174)

        'Save and Close Workbook
        wb.Close SaveChanges:=True

        'Ensure Workbook has closed before moving on to next line of code
        DoEvents
    End If
Next

希望這可以幫助。