VBA合并多个excel表

Sub 合并当前目录下所有工作簿的全部工作表()
Dim MyPath, MyName, AWbName
Dim Wb As Workbook, WbN As String
Dim G As Long
Dim Num As Long
Dim BOX As String
flag = 0

Application.ScreenUpdating = False
MyPath = ActiveWorkbook.Path
MyName = Dir(MyPath & "\" & "*.xls")
AWbName = ActiveWorkbook.Name
Num = 0

Do While MyName <> ""
If MyName <> AWbName Then
Set Wb = Workbooks.Open(MyPath & "\" & MyName)
Num = Num + 1
With Workbooks(1).ActiveSheet
For G = 1 To Sheets.Count
If flag = 0 Then
Wb.Sheets(G).UsedRange.Copy .Cells(.Range("A65536").End(xlUp).Row , 1)
flag = 1
Else
Wb.Sheets(G).Range("a2", Wb.Sheets(G).Cells.SpecialCells(xlCellTypeLastCell)).Copy .Cells(.Range("A65536").End(xlUp).Row + 1, 1)

End If
Next
WbN = WbN & Chr(13) & Wb.Name
Wb.Close False
End With
End If
MyName = Dir
Loop
Range("A1").Select

Application.ScreenUpdating = True
MsgBox "共合并了" & Num & "个工作薄下的全部工作表。如下：" & Chr(13) & WbN, vbInformation, "提示"
End Sub