Datagrids & arrays

[Van Brollini]

I have a datagrid with 1250 rows and 28 columns.
The first 13 columns are data to be operated on. The last 15 columns are where the calculations are to be placed.

I have gone through the datagrid manual and it is still fuzzy on how to get data OUT of the datagrid to do the calculations and then place the answers back INTO the datagrid.

Any examples on how to this available?

Thanks