Hi....I am using windows application (VB.NET). I have a form with datagridview with columns qty , unit price and cost . The Cost column is qty * unit price column. When i enter unit cost in unit price column i wrote this calculation in cell end edit event for datagridview but when mouse left the focus only the event do calculations.. Is there any other event to do calculation in data gridiview so that calculation is correct.Thanks and RegardsSankar