AMPSExcel.ManageSubsForm.btnDeactivate_Click C# (CSharp) Method

        private void btnDeactivate_Click(object sender, EventArgs e)
        {
            for (int i = 0; i < dataGridView1.RowCount; i++)
            {
                if ((bool)dataGridView1.Rows[i].Cells[0].Value != false)
                {
                    deactivate(i);
                    dataGridView1.Rows[i].Cells[0].Value = false;
                }
            }
        }