private void ListBox1_SelectedIndexChanged(object sender, EventArgs e) { if (listBox1.SelectedIndex > -1) { if (listBox1.SelectedItem is Ozero) { Ozero o = listBox1.SelectedItem as Ozero; label4.Text = "T=" + o.Calc().ToString(); } else if (listBox1.SelectedItem is Reka) { Reka o = listBox1.SelectedItem as Reka; label4.Text = "T=" + o.Calc().ToString(); } else { Samosplav o = listBox1.SelectedItem as Samosplav; label4.Text = "T=" + o.Calc().ToString(); } } }
private void Button1_Click(object sender, EventArgs e) { double s = Convert.ToDouble(textBox1.Text); if (radioButton1.Checked) { double v = Convert.ToDouble(textBox2.Text); Ozero o = new Ozero(v, s); listBox1.Items.Add(o); } else if (radioButton2.Checked) { double v = Convert.ToDouble(textBox2.Text); double w = Convert.ToDouble(textBox3.Text); Reka r = new Reka(v, w, s); listBox1.Items.Add(r); } else { double w = Convert.ToDouble(textBox3.Text); Samosplav ss = new Samosplav(w, s); listBox1.Items.Add(ss); } }