Sub wjhb()
Dim str As String
Dim wb As Workbook

 
 str = Dir("c:\data\*.*")
 
    For i = 1 To 20
       ' 1 打开文件
     Set wb = Workbooks.Open("c:\data\" & str & "")
          ' 2 从遍历中的某一个工作簿中的第一张表执行拷贝 到这个工作簿中的最后一张表中去
       wb.Sheets(1).Copy after:=ThisWorkbook.Sheets(ThisWorkbook.Sheets.Count)
          ' 3 在这个工作簿中的最后一张表的名字是【已经完成拷贝操作】  = 文件名称
       ThisWorkbook.Sheets(ThisWorkbook.Sheets.Count).Name = Split(str, ".")(0)
          '4 遍历中的工作簿执行关闭
       wb.Close
           '下一次遍历
       str = Dir
       
       If str = "" Then
            Exit For
       End If
        
    Next

End Sub

End Sub
Sub wjhb2()
Dim str As String
Dim wb As Workbook

 
 str = Dir("c:\data\*.xlsx")
 
    For i = 1 To 20
       
     Set wb = Workbooks.Open("c:\data\" & str & "")
        
       wb.Sheets(1).Copy after:=ThisWorkbook.Sheets(ThisWorkbook.Sheets.Count)
       ThisWorkbook.Sheets(ThisWorkbook.Sheets.Count).Name = str
       wb.Close
       str = Dir
       
       If str = "" Then
            Exit For
       End If
        
    Next
End Sub