Cac doan ma VBA cho Excel

<span class='text_page_counter'>(1)</span><div class='page_container' data-page=1>

<b>Cấm in:</b>

Private Sub workbook_BeforePrint(Cancel As Boolean)
Cancel = True

MsgBox "Thành thật xin lỗi, Toi khong cho phep ban in trang nay", vbInformation
End Sub

<b>Cấm lưu bảng tính với tên khác</b>

Private Sub workbook_BeforeSave(ByVal SaveAsUI As Boolean, _
Cancel As Boolean)

Dim lReply As Long
If SaveAsUI = True Then

lReply = MsgBox("Sorry, you are not allowed to save this workbook as another name." _
& "Do you wish to save this workbook?", vbQuestion + vbOKCancel)

Cancel = (lReply = vbCancel)
If Cancel = False Then Me.Save
Cancel = True

End If
End Sub

<b>Cấm in từng sheet:</b>

Private Sub workbook_BeforePrint(Cancel As Boolean)
Select Case ActiveSheet.Name

Case "Sheet1", "Sheet2"
Cancel = True

MsgBox "Sorry, you cannot print this sheet from this workbook", _
vbInformation

End Select
End Sub

<b>Cấm chèn thêm sheet:</b>

Private Sub Workbook_NewSheet(ByVal Sh As Object)
Application.DisplayAlerts = False

MsgBox "Sorry, you cannot add any more sheets to this workbook", _
vbInformation

Sh.Delete

</div>
<span class='text_page_counter'>(2)</span><div class='page_container' data-page=2>

<b>Phá pass trong sheet</b>

Sub PasswordBreaker()

If ActiveSheet.ProtectContents = False Then

MsgBox "Sheet '" & ActiveSheet.Name & "' is unprotected!", vbInformation
Else

If MsgBox("Sheet '" & ActiveSheet.Name & "' is protected, do you want to unprotect
it?", _

vbYesNo + vbQuestion, "Unprotect Active Sheet") = vbNo Then Exit Sub
Dim i As Integer, j As Integer, k As Integer

Dim l As Integer, m As Integer, n As Integer
Dim i1 As Integer, i2 As Integer, i3 As Integer
Dim i4 As Integer, i5 As Integer, i6 As Integer
On Error Resume Next

For i = 65 To 66: For j = 65 To 66: For k = 65 To 66
For l = 65 To 66: For m = 65 To 66: For i1 = 65 To 66
For i2 = 65 To 66: For i3 = 65 To 66: For i4 = 65 To 66
For i5 = 65 To 66: For i6 = 65 To 66: For n = 32 To 126
ActiveSheet.Unprotect Chr(i) & Chr(j) & Chr(k) & _
Chr(l) & Chr(m) & Chr(i1) & Chr(i2) & Chr(i3) & _
Chr(i4) & Chr(i5) & Chr(i6) & Chr(n)

Next: Next: Next: Next: Next: Next
Next: Next: Next: Next: Next: Next

If ActiveSheet.ProtectContents = False Then MsgBox "Sheet '" & ActiveSheet.Name
& "' is unprotected!", vbInformation

</div>

<!--links-->