当我在Excel中使用VBA时，我收到一个奇怪的错误，我该如何解决这个问题？

Question

我正在尝试将150,000个不同的.xls文件合并到一个只有一个主表单中。我以前做了很多次，但是我突然在过程中遇到错误。

以下是我使用的VBA：

http://i.stack.imgur.com/rQWiU.jpg

Option Explicit
Sub CombineDataFiles()

Dim DataBook As Workbook, OutBook As Workbook
Dim DataSheet As Worksheet, OutSheet As Worksheet
Dim TargetFiles As FileDialog
Dim MaxNumberFiles As Long, FileIdx As Long, _
 LastDataRow As Long, LastDataCol As Long, _
HeaderRow As Long, LastOutRow As Long
Dim DataRng As Range, OutRng As Range

initialize constants
MaxNumberFiles = 150001
HeaderRow = 1 'assume headers are always in row 1
LastOutRow = 1

'prompt user to select files
Set TargetFiles = Application.FileDialog(msoFileDialogOpen)
With TargetFiles
.AllowMultiSelect = True
.Title = "Multi-select target data files:"
.ButtonName = ""
.Filters.Clear
.Filters.Add ".xls files", "*.xls"
.Show
End With

'error trap - don't allow user to pick more than 150000 files
If TargetFiles.SelectedItems.Count > MaxNumberFiles Then
    MsgBox ("Too many files selected, please pick more than " & MaxNumberFiles & ". Exiting         sub...")
    Exit Sub
End If

'set up the output workbook
Set OutBook = Workbooks.Add
Set OutSheet = OutBook.Sheets(1)

'loop through all files
For FileIdx = 1 To TargetFiles.SelectedItems.Count

    'open the file and assign the workbook/worksheet
Set DataBook = Workbooks.Open(TargetFiles.SelectedItems(FileIdx))
Set DataSheet = DataBook.ActiveSheet

'identify row/column boundaries
LastDataRow = DataSheet.Cells.Find("*", SearchOrder:=xlByRows, SearchDirection:=xlPrevious).Row
    LastDataCol = DataSheet.Cells.Find("*", SearchOrder:=xlByColumns,                             SearchDirection:=xlPrevious).Column

'if this is the first go-round, include the header
If FileIdx = 1 Then
    Set DataRng = Range(DataSheet.Cells(HeaderRow, 1), DataSheet.Cells(LastDataRow, LastDataCol))
    Set OutRng = Range(OutSheet.Cells(HeaderRow, 1), OutSheet.Cells(LastDataRow, LastDataCol))
'if this is NOT the first go-round, then skip the header
Else
    Set DataRng = Range(DataSheet.Cells(HeaderRow + 1, 1), DataSheet.Cells(LastDataRow,                     LastDataCol))
    Set OutRng = Range(OutSheet.Cells(LastOutRow + 1, 1), OutSheet.Cells(LastOutRow + 1 + LastDataRow, LastDataCol))
End If

'copy the data to the outbook
DataRng.Copy OutRng

'close the data book without saving
DataBook.Close False

'update the last outbook row
LastOutRow = OutSheet.Cells.Find("*", SearchOrder:=xlByRows, SearchDirection:=xlPrevious).Row

Next FileIdx

'let the user know we're done!
MsgBox ("Combined " & TargetFiles.SelectedItems.Count & " files!")

End Sub