Subtotal on Main Form

I have a field (InvoiceSubTotal) on a Main form that is linked to the Subtotal field on the subform's footer. =[sfrmInvoiceDetails].[Form]![subtotal] This works correctly.  

I want that value to also appear in the bound InvoiceTotal field.  I have tried to put code on the InvoiceSubTotal AfterUpdate event but nothing happens.  How do I get the subform's SubTotal to appear in the bound InvoiceTotal field.  Thanks for your help.
Sasha42Asked:
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Sasha42Author Commented:
Btw, a year's worth of invoice totals were put in the database without having invoice details.  So I can't just make the Invoice Total field a calculated field.
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IrogSintaCommented:
I'm a bit confused about what you mean by getting the subform's SubTotal to appear in the bound InvoiceTotal field.  Since it's bound to the InvoiceTotal field and you already have a year's worth of invoice totals, doesn't it already have a value there?
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suvmitraCommented:
You need to use an Unbound text box may be in the Report Footer or Group the Field and populate the Total value in the after update event.
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clarkscottCommented:
Use a function to get your results.  You can use it anywhere.

Create a query that SUMS the field you need.

In a module, create a function to retrieve this value from the query.


Function GetTotals() as currency
Dim db as dao.database
dim rst as dao.recordset
set db = codedb
set rst = db.openrecordset("YourQuery",dbopensnapshot)
rst.movefirst
GetTotals = rst!YourSum
rst.close
db.close
set rst = nothing
set db = nothing
End Function


Scott C
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clarkscottCommented:
Whoops.... in the text field of your Main form ...  control source:  =GetTotals()

Scott C
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Jeffrey CoachmanMIS LiasonCommented:
<I want that value to also appear in the bound InvoiceTotal field. >
You cannot make calculated fields appear in "bound" fields...
(inserting calculated data into a field will typically create "redundant" data...)
...you also did not stated where this mystery field/control was located...?

As always, you should first always fully explain your design, ...then explain, in detail, what your ultimate goal is...
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