Granted. I wouldn't load thousands of rows in Grid any how...

>Jayesh,
>
>Since this is an O(n²) algorithm I wouldn't recommend using it for anything but very small numbers of rows. O(n²) algorithms are very, very bad.
>
>>2. Create new form method and call it Calculate.
>>
>>3. Drop a Grid on the form with 3 Columns. Last Column should have Thisform.Calculate() as Controlsource.
>>
>>4. Put the following code into Calculate method.
>>
>>

>>
>>LPARAMETERS tnRecNo
>>
>>LOCAL lnRecNo,lnRtnValue
>>
>>lnRtnValue = 0
>>lnRecNo    = RECNO("c1") - 1
>>
>>IF lnRecNo >= 1
>>	SELECT C2
>>	SUM C2.cB FOR RECNO() <= lnRecNo TO lnRtnValue
>>	lnRtnValue = lnRtnValue + C1.cB
>>ELSE
>>	lnRtnValue = C1.cB
>>ENDIF
>>
>>SELECT C1
>>RETURN lnRtnValue
>>
>>