BozzoCage
asked on
Custom delete of record
I want to change one field of record instead of deleting whole record with standard delete action. My current solution:
Private Sub Form_BeforeDelConfirm(Canc
If MsgBox("Delete?", vbQuestion + vbYesNo) = vbYes Then
Cancel = True
ImportantField.Value = Null
Else
Cancel = True
End If
End Sub
ImportantField is name of field on that form that is criteria in query. My delete should only set this field to Null instead of deleting whole record - record would disappear from shown datasheet, since it would no longer match my criteria (..WHERE ImportantField Is Not Null)
Previously written code sets field to Null, but when event completes (BeforeDelConfirm), it gets back old value - it discards my changes. How to prevent that?
Private Sub Form_BeforeDelConfirm(Canc
If MsgBox("Delete?", vbQuestion + vbYesNo) = vbYes Then
Cancel = True
ImportantField.Value = Null
Else
Cancel = True
End If
End Sub
ImportantField is name of field on that form that is criteria in query. My delete should only set this field to Null instead of deleting whole record - record would disappear from shown datasheet, since it would no longer match my criteria (..WHERE ImportantField Is Not Null)
Previously written code sets field to Null, but when event completes (BeforeDelConfirm), it gets back old value - it discards my changes. How to prevent that?
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ASKER
paasky, thanks!
It works as I wanted.
My idea:
Let's say I'm managing subscriptions and when I unsubscibe someone, I don't want to erase users data (name,...). Because there is only one property that says someone is subscribed (date), I put it in same table with all other users data. I don't need another table that would say who is subscribed, since that one would be related to main table only 1:1. It would be easier to unsubscribe users, but I think current way is better.
I have subform with list of subscribed users, from where I simply delete someone to unsubscribe it.
It works as I wanted.
My idea:
Let's say I'm managing subscriptions and when I unsubscibe someone, I don't want to erase users data (name,...). Because there is only one property that says someone is subscribed (date), I put it in same table with all other users data. I don't need another table that would say who is subscribed, since that one would be related to main table only 1:1. It would be easier to unsubscribe users, but I think current way is better.
I have subform with list of subscribed users, from where I simply delete someone to unsubscribe it.
Glad I could help you BozzoCage.
Interesting approach ...
and the reason why you're doing importantfield-nulling in OnBef./Aft.Delete event is that built-in toolbar or menu is used for unsubscribing the user, not button where you could just set null to "importantfield", right?
' unsubscribe user with button
Private Sub B_Delete_Click()
If MsgBox("Delete?", vbQuestion + vbYesNo) = vbYes then Me!ImportantField = Null
End Sub
Regards,
Paasky
Interesting approach ...
and the reason why you're doing importantfield-nulling in OnBef./Aft.Delete event is that built-in toolbar or menu is used for unsubscribing the user, not button where you could just set null to "importantfield", right?
' unsubscribe user with button
Private Sub B_Delete_Click()
If MsgBox("Delete?", vbQuestion + vbYesNo) = vbYes then Me!ImportantField = Null
End Sub
Regards,
Paasky
ASKER
paasky, Hello!
I have main form with some common propertis with a subform, in which I have list (with some details) of subscribers, matching some criteria. Main form has button that opens new form for adding (actually selecting from existing users) subscribers. Changes (additions) are immediately shown in subform. To delete (unsubscribe) them, I "have to" use standard method (delete key on selected row).
It would be great if I could put some buttons to main form (Delete, Properties of person...), but I didn't found a way to access subforms data from main form - to access single records. Subform is shown as datasheet, so I cannot put those buttons onto subform.
But that would be for another question - and my time is ticking away...
Thanks again!
I have main form with some common propertis with a subform, in which I have list (with some details) of subscribers, matching some criteria. Main form has button that opens new form for adding (actually selecting from existing users) subscribers. Changes (additions) are immediately shown in subform. To delete (unsubscribe) them, I "have to" use standard method (delete key on selected row).
It would be great if I could put some buttons to main form (Delete, Properties of person...), but I didn't found a way to access subforms data from main form - to access single records. Subform is shown as datasheet, so I cannot put those buttons onto subform.
But that would be for another question - and my time is ticking away...
Thanks again!
Just set focus to your subform and use DoCmd.Runcommand statement to delete record:
Private Sub B_DeleteRecord_Click()
' this prevents error messages
On Error Resume Next
' set focus to subform
Me.Subform1.SetFocus
' delete active record
DoCmd.RunCommand acCmdDeleteRecord
End Sub
:o)
Private Sub B_DeleteRecord_Click()
' this prevents error messages
On Error Resume Next
' set focus to subform
Me.Subform1.SetFocus
' delete active record
DoCmd.RunCommand acCmdDeleteRecord
End Sub
:o)
(above code is from mainform's "Delete" button)
Here are possible status codes in AfterDelConfirm event:
acDeleteOK
Indicates the deletion was successful.
acDeleteCancel
Indicates the deletion was canceled in Visual Basic. (we catch this!)
acDeleteUserCancel
Indicates the deletion was canceled by the user.
Hope this helps,
Paasky