I have three forms similar to the one in the link.
Each form has a table from a dataset attached to it.
I want add a Total textbox to every form.
Meaning 3 forms, 3 tables, 3 total boxes that display the sum of the amount values that were entered by the user during every entry.
The total will add the values that will be entered in the montant textbox.
So the total will take the specific value of that texbox for...

I need help with a program.
Below is a link that shows one of my form.

http://i1006.photobuck et.com/albums/af189/diaboloent/OneForm.jpg

My problem is as follow:
The user will enter information in the designated spaces.
I don't know how many entries the user will make but I know that there will be various entries.
In the second textbox named montanttextbox which is allocated to Montant, the...