AMPSExcel.ManageSubsForm.btnActivate_Click C# (CSharp) Method

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