Hello - I have a grid that has a Quantity, a Cost, and a Total column. Currently, the Total Column is a TemplateColumn and on ItemDataBound I manaully calculate the Total (which is Quantity * Cost) for each row. This presents a problem when there are 100+ rows, performance wise. I know I can change it to a Calculated Column, which would erase the need to manually calculate it in the code behind. My problem is that the user needs to see the new Total while they are still editing the row. With the Template column, I can use JavaScript to udpdate it, but am unable to use JS when I change it to a Calculated Column. This seems like a pretty basic question... Any ideas?