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Displaying Subform Totals in a Main Form in MS Access

In this article we are going to show you how to display totals taken from your subform, and display these in controls in your main form.
http://www.databasedev.co.uk/subform-total.html

Description:

In this article we are going to show you how to display totals taken from your subform, and display these in controls in your main form. We need to be able to reference the subform control from the main Microsoft Access form.

If you attempt to sum a subform field by using a calculated control on a main form, you may receive an error message in the main form control. For example, the following expression in a main form control generates a "#Error" error message:

=Sum(sfrmAlbumTracks.Form!txtLength)We can see this in use on the following form, where we would like to show the Total Album Length on our main form by calculating the sum of the tracks displayed in the subform.

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