private void BtnMostrar_Click(object sender, EventArgs e) { if (TxtN.Text.Trim().Length == 0) { MessageBox.Show("INGRESE UN DATO"); TxtN.Focus(); return; } int i, n, rest; n = Convert.ToInt16(TxtN.Text.Trim()); for (i = 1; i <= 10; i++) { if (n <= 10) { rest = i * n; LstMostrar.Items.Add(i + " * " + n + " = " + i * n); } else { MessageBox.Show("SOLO SE ADMITEN DATOS ENTRE 1 Y 10"); TxtN.Clear(); TxtN.Focus(); return; } } }
private void BtnLimpiar_Click(object sender, EventArgs e) { TxtN.Clear(); LstMostrar.Items.Clear(); TxtN.Focus(); }