private void comboBox1_SelectedIndexChanged(object sender, EventArgs e) { int index = 9; if (index != comboBox1.SelectedIndex) { index = comboBox1.SelectedIndex; comboBox2.DataSource = itens.tiposUtensilio(index + 1); comboBox2.DisplayMember = "nome"; comboBox2.ValueMember = "id"; comboBox2.Enabled = true; } comboBox2.Text = ""; }