private void checkBox2_CheckedChanged(object sender, EventArgs e)
 {
     if (checkBox2.Checked == true)
     {
         if (dataGridView2.Rows.Count > 0)
         {
             string temp = dataGridView2.Rows[dataGridView2.SelectedCells[0].RowIndex].Cells[0].FormattedValue.ToString();
             string ativ = "sim";
             DALCadastro.Inativa_Contas_Corrente(temp, ativ);
             MessageBox.Show("Conta Ativa");
             dataGridView2.DataSource = DALCadastro.Lista_Contas_Corrente("0");
         }
     }
     if (checkBox2.Checked == false)
     {
         if (dataGridView2.Rows.Count > 0)
         {
             string temp = dataGridView2.Rows[dataGridView2.SelectedCells[0].RowIndex].Cells[0].FormattedValue.ToString();
             string ativ = "não";
             DALCadastro.Inativa_Contas_Corrente(temp, ativ);
             MessageBox.Show("Conta Inativa");
             dataGridView2.DataSource = DALCadastro.Lista_Contas_Corrente("0");
         }
     }
 }