جرب هذا الكود في حدث بعد التحديث للكمبو بكس
Dim a As String
a = "renting"
If DCount("[Customer_Name]", "Customer", "[warehouse A] ='" & Me![Combo69] & "' AND [status] ='" & a & "'") > 0 Then
Cancel = True
MsgBox "هذا المخزن تم استأجاره", vbCritical, "عملية خاطئة"
ElseIf DCount("[Customer_Name]", "Customer", "[warehouse B] ='" & Me![Combo69] & "' AND [status] ='" & a & "'") > 0 Then
Cancel = True
MsgBox "هذا المخزن تم استأجاره", vbCritical, "عملية خاطئة"
ElseIf DCount("[Customer_Name]", "Customer", "[warehouse C] ='" & Me![Combo69] & "' AND [status] ='" & a & "'") > 0 Then
Cancel = True
MsgBox "هذا المخزن تم استأجاره", vbCritical, "عملية خاطئة"
ElseIf DCount("[Customer_Name]", "Customer", "[warehouse D] ='" & Me![Combo69] & "' AND [status] ='" & a & "'") > 0 Then
Cancel = True
MsgBox "هذا المخزن تم استأجاره", vbCritical, "عملية خاطئة"
ElseIf DCount("[Customer_Name]", "Customer", "[warehouse E] ='" & Me![Combo69] & "' AND [status] ='" & a & "'") > 0 Then
Cancel = True
MsgBox "هذا المخزن تم استأجاره", vbCritical, "عملية خاطئة"
End If