private void activitiesSummary_CellEndEdit(object sender, DataGridViewCellEventArgs e) { string after = activitiesSummary.Rows[e.RowIndex].Cells[e.ColumnIndex].Value.ToString(); activitiesSummary.CancelEdit(); string before = activitiesSummary.Rows[e.RowIndex].Cells[e.ColumnIndex].Value.ToString(); lazyCure.RenameActivity(before, after); }