private void btnFltrar_Click(object sender, EventArgs e) { dataGridView1.DataSource = null; if ((combo_afiliacion.Text != "") || (txtConsultaAÑO.Text != "") || (txtConsultaMES.Text != "")) { dataGridView1.DataSource = servicios.Filtro(combo_afiliacion.Text, int.Parse(txtConsultaAÑO.Text), int.Parse(txtConsultaMES.Text)); lbbTotalizar.Text = servicios.Totalizar().ToString(); } }