Calcuations

[koncreat]

I have three fields in a subform that I need to use in a calculation on the main form. :
NG_Cast
OK_Cast
Repaired_Cast

The subform and the main form are linked via a field called Issue_Number. This is also the primary key.

What I need is a text box that adds together these fields on the main form using the Issue_Number field. Currently when someone starts a new entry the issue number is auto populated with a number and the subform uses that number to tie together the data entered there with the main form.

[ranman256]

In the main form, the text box formula= BG+ok+repaired+txtBoxSub
txtBoxSub box is unbound, but is filled via the subForm.
in the subForm,use the OnCurrent event to fill the txtBoxSub to the value.

sub form_onCurrent()
  Forms!mainForm!txtBoxSub = nz(me.field)
end sub

When user clicks a different record in the sub form,it updates the master form calculated field.

[koncreat]

So what i have now is:

=[NG_Cast]+[OK_Cast]+[Repaired_Cast]+[Text475]

This is the control source for the text box. The name of the text box is Text475

In the on current for the subform i have

Private Sub Form_Current() Forms!frm_p1_sorts!Text475 = Nz(Me.Text475)
End Sub:

When try to use the form i am getting an error from the on current event.

[ranman256]

Text475 is the name of the txtbox on the MAIN form.
the text box on the SUB form may be a different name.

Forms!frm_p1_sorts!Text475 = Nz(me.SUBFORMTEXTBOXNAME)

[ssanfu]

See this site for referring to controls on a subform from the main form

Refer to Form and Subform properties and controls
http://access.mvps.org/access/forms/frm0031.htm