>>Hello Naomy
>>
>>Your Question is :
>>Do you want to calculate totals for the whole grid or put totals in an extra column of the grid?
>>
>>i want to calculate , no on any column in my Grid but on a textbox in my form the value of the column , for example : €totalinvoice , where the grid column checkbox is true.
>>
>>for example
>>Columns on my grid : Check , nº invoice , totalinvoice
>>

>>check           nº invoice      totalinvoice
>>.T.             11111               1000,00
>>.T.             22222                500,00
>>.F.              3333                100,00

>>
>>my textbox total on my form outside the grid is equal to : (1000,00+500,00)=1500
>>
>>Thanks, i hope you understand better now.
>>
>>Luis Santos
>
>Sure, it's much better now.
>

>select MyTable
>sum TotalInvoice to lnTotal for Check = .t.
>thisform.txtTotal.value = m.lnTotal

I really hate this:

... for Check = .t.

There is no need for one additional comparison, why not just:

... for Check