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Sub CheckIfFileOpen()
Dim fileName As String
fileName = "C:\Users\marks\Documents\......." 'Tên file kèm đường dẫn
'Gọi function kiểm tra file đóng hay mở
If IsFileOpen(fileName) = False Then
'Câu lệnh thực hiện khi file đang đóng
Else
'File đang mở hoặc lỗi khác
MsgBox fileName & " is already open."
End If
End Sub
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