I have a datagridview with all of a certain customers open invoices. There is a checkbox column that shows if we are applying money to this invoice or not. Sometimes the user will try to check off an invoice, but I don't want to allow that invoice to be
checked off because there is not enough money to apply to that invoice. How would I be able to do that? I don't want it to check and then to have to uncheck it. If possible, I want to just be able to before it even checks to say if it can't be checked return;
exit the subroutine. I just don't know which event handler I can do it in.
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