Command button to validate data

[Eddie Malone]

Hi,

I'm new to access. I have built a database and a form (along with a subform). Before the command button updates I want it to run a validation. The current VBA code for the button is:

Option Compare Database
Option Explicit
 
Private Sub Command20_Click()
On Error GoTo Err_Command20_Click
 
 
    DoCmd.GoToRecord , , acNewRec
 
Exit_Command20_Click:
    Exit Sub
 
Err_Command20_Click:
    MsgBox Err.Description
    Resume Exit_Command20_Click
 
End Sub

I'm looking to add the following code in some manner:

Private Sub Form_BeforeUpdate(Cancel As Integer)
 
    If Me.[Cartons]-Me.[CartonCountSubtotal] <> 0 Then
        MsgBox "Check your carton count!"
        Cancel = True
    End If
 
End Sub

I'm trying all kinds of different combinations and it just does not want to work. I only want the form to update if Cartons - CartonCountSubtotal = 0. Any thoughts?

Thank you in advance. This is driving me nuts.

Eddie.

[nico5038]

Better to use a [Cancel] and [Save] button.
In the [Cancel] button code:

If Me.Dirty then
me.undo
endif
docmd.close

In the [Save button code:

If Me.[Cartons]-Me.[CartonCountSubtotal] <> 0 Then
MsgBox "Check your carton count!"
else
docmd.close
End If


Nic;o)

[Eddie Malone]

Better to use a [Cancel] and [Save] button.
In the [Cancel] button code:

If Me.Dirty then
me.undo
endif
docmd.close

In the [Save button code:

If Me.[Cartons]-Me.[CartonCountSubtotal] <> 0 Then
MsgBox "Check your carton count!"
else
docmd.close
End If


Nic;o)

Thank you so much for you quick reply. I'll kick it around and see if I can get it to work.

Eddie.

[Eddie Malone]

Thank you so much for you quick reply. I'll kick it around and see if I can get it to work.

Eddie.

Stupid question no doubt but is the Canel and Save button the same button? Or are there two? I can't find the save function in teh command button.

Eddie.

[nico5038]

It wil be two separate selfplaced buttons.
I use them always as it's the general way Windows forms work :-)

Nic;o)

[missinglinq]

Are the controls you're referring to, [Cartons] and [CartonCountSubtotal] both on the same form, or is one on the form and one on the subform?

[Eddie Malone]

Are the controls you're referring to, [Cartons] and [CartonCountSubtotal] both on the same form, or is one on the form and one on the subform?

One is in a form and the other in subform. Cartons is on the form and CartonCountSubtotal is in the in subform.

[NeoPa]

Look in Referring to Items on a Sub-Form for ways to access CartonCountSubtotal on the subform.
The Me! version should work best for you.