I am Noor, Your great solution proves really helpful. I faced the same
problem which is solved by your provided solution but there is a little
problem still present. I have two forms on main form. I have to calculate the
SUM of Quantity of each Item in both the subforms and subtract the total of
second subform from the first subform in main form. Your provided solution
help me to solve this problem but when the value in second form equal to
Zero, then it show 0 as answar while it should show the original value of the
first subform. Please help me. Thankx alot in advance.
"Allen Browne" wrote:
1. From the database window, open your subform in design view.
2. If you do not see a Form Footer section, click Form Header/Footer on the
View menu. You can set the section's Visible property to No if you do not
wish to see this section.
3. In the Form Footer section, add a text box, and give it these properties:
Control Source =Sum([Quantity] * [Price])
Name txtSubTotal
Format Currency
4. Save and close.
5. In the main form, set the Control Source of the text box that should show
this total to:
=[Order Details Subform].[Form].[txtSubTotal]
You can then multiply that value by your Discount Multiplier field to
display the calculated total in another text box. (Note that you should not
store the amount of discount nor the order total in the main Order table.)
--
Allen Browne - Microsoft MVP. Perth, Western Australia.
Tips for Access users - http://allenbrowne.com/tips.html
Reply to group, rather than allenbrowne at mvps dot org.
"Richard Horne" wrote in message
...
Hi guys.
I have a field in a sub form called Total Item Cost which multiplies the
quantity and price of an item in my ordering system. This form is called
Order Details Subform, then I have my main order form called Orders I want
to
create a text box in this main form which SUMs the field Total Item Cost,
can
this be done and if so how do I go about this?
Can you apply calculations from fields in a sub form to fields in a main
form? As I also have a discount multiplier in the mai form I would like to
multiply the SUM total by also. But obviously the answer to the first part
of
my question should answer the second part.