[VBA] Merge ไฟล์ Excel หลายไฟล์

พอดีมีเพื่อนตอนมํธยมทักมา เพื่อให้ช่วยรวมข้อมูลไฟล์ Excel หลายๆไฟล์ แต่ตอนนั้นผมเตรียมสอบ Toeic อยู่เลยปัดไป แต่จริงๆแอบเขียน VBA เพื่อรวมไฟล์ Excel หลายๆไฟล์ มารวมใน Sheet เดียว โดยมี Code คร่าวๆ ดังนี้
ถ้าว่างๆ เดี๋ยวมาอธิบาย Code นะ

[vb]
Option Explicit
Public strPath As String
Public Type SELECTINFO
hOwner As Long
pidlRoot As Long
pszDisplayName As String
lpszTitle As String
ulFlags As Long
lpfn As Long
lParam As Long
iImage As Long
End Type

Declare Function SHGetPathFromIDList Lib "shell32.dll" _
Alias "SHGetPathFromIDListA" (ByVal pidl As Long, ByVal pszPath As String) As Long
Declare Function SHBrowseForFolder Lib "shell32.dll" _
Alias "SHBrowseForFolderA" (lpBrowseInfo As SELECTINFO) As Long
Function SelectFolder(Optional Msg) As String
Dim sInfo As SELECTINFO
Dim path As String
Dim r As Long, x As Long, pos As Integer
sInfo.pidlRoot = 0&

If IsMissing(Msg) Then
sInfo.lpszTitle = "Select your folder."
Else
sInfo.lpszTitle = Msg
End If

sInfo.ulFlags = &H1

x = SHBrowseForFolder(sInfo)

path = Space$(512)
r = SHGetPathFromIDList(ByVal x, ByVal path)
If r Then
pos = InStr(path, Chr$(0))
SelectFolder = Left(path, pos - 1)
Else
SelectFolder = ""
End If
End Function
'Merge all your excel files to a main file.
Sub MergeExcels()
Dim path As String, ThisWB As String, lngFilecounter As Long
Dim wbDest As Workbook, shtDest As Worksheet, ws As Worksheet
Dim Filename As String, Wkb As Workbook
Dim CopyRng As Range, Dest As Range
Dim RowofCopySheet As Integer

RowofCopySheet = 1 ' Row Number from where you wish to start copying

ThisWB = ActiveWorkbook.Name

path = SelectFolder("Select a folder containing Excel files you want to merge")

Application.EnableEvents = False
Application.ScreenUpdating = False

Set shtDest = ActiveWorkbook.Sheets(1)
Filename = Dir(path & "\*.xls", vbNormal)
If Len(Filename) = 0 Then Exit Sub
Do Until Filename = vbNullString
If Not Filename = ThisWB Then
Set Wkb = Workbooks.Open(Filename:=path & "\" & Filename)
Set CopyRng = Wkb.Sheets(1).Range(Cells(RowofCopySheet, 1), Cells(ActiveSheet.UsedRange.Rows.Count, ActiveSheet.UsedRange.Columns.Count))
Set Dest = shtDest.Range("A" & shtDest.UsedRange.SpecialCells(xlCellTypeLastCell).Row + 1)
CopyRng.Copy Dest
Wkb.Close False
End If

Filename = Dir()
Loop

Range("A1").Select

Application.EnableEvents = True
Application.ScreenUpdating = True

MsgBox "Files Merged!"
End Sub
[/vb]