Reference Subform control within the subform in Ms Access

Hi people There!

I having problems assigning a bound control within a sub form called sfrmCostofSales subform] see the photo below . I want a control called stdcost to be updated by un bound control called txtperformance which carries special calculation for cost of sales , I tried the VBA code below , but nothing is working:

Private Sub Form_BeforeInsert(Cancel As Integer)
Me.StdCost = Forms![frmCustomerInvoice]![sfrmCostofSales subform].Form![txtPerformance]
End Sub

The parent form is called frmCustomerInvoice , could it be I'm using a wrong event.

Instead of entering calculation of cost of sales per unit manually I want this control called stdCost which is bound to the table to be update by this unbound control within the datasheete subform called sfrmCostofSales subform] which calculate the correct cost of sales

Kindly help!

SubFormCosting.png

Regards

Chris
LVL 3
Hankwembo Christopher,FCCA,FZICA,CIA,MAAT,B.A.ScDirectorAsked:
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Gustav BrockCIOCommented:
This should work - but [sfrmCostofSales subform] must be name of the subform control, not the subform itself:

Private Sub Form_BeforeInsert(Cancel As Integer)

    Me!StdCost.Value = Me![sfrmCostofSales subform].Form![txtPerformance].Value

End Sub

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Fabrice LambertConsultingCommented:
Hi,

In your main form, there is a control holding the subform, and this  control have a Form property giving you access to the held form.
So basically, the syntax is:
SubFormControlHolderName.Form.SubFormControlName.PropertyName

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Side note:
Access give the sub form control holder's name the same name as the sub form (ehence the confusion), but you can name it whatever you like.
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Microsoft Access

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