Sajjad

The best way to get row totals is to set the controlsource to give the result you want:

grid1.column7.controlsource = mytable.quantity*mytable.price

You will find that working directly with data (mytable.quantity*mytable.price) is more predictable than properties of objects (column5.text1.value*column6.text1.value) when you are using grids.

If you want column totals too, then try using a SQL query against the data source because it will give you results without moving the record pointer and therefore scrolling the grid.