Add label to Panel programmatically

Question

So I have a form, and I want to add some Panels with some controls(labels, and radiobuttons) when the form loads.
And I want to do it from the code, of course(it's for making an application with tests, and the questions will be random)
This is what I have done till now:

List<Panel>ls=new List<Panel>();

private void VizualizareTest_Load(object sender, EventArgs e)
{
    for (int i = 0; i < 4; i++)
    {
        Panel pan = new Panel();
        pan.Name = "panel" + i;
        ls.Add(pan);
        Label l = new Label();
        l.Text = "l"+i;
        pan.Controls.Add(l);
        pan.Show();
    }

}

But it doesn't show anything on the form.

Answer 1

Add the panel just created to the Form.Controls collection

private void VizualizareTest_Load(object sender, EventArgs e)
{
    for (int i = 0; i < 4; i++)
    {
        Panel pan = new Panel();
        pan.Name = "panel" + i;
        ls.Add(pan);
        Label l = new Label();
        l.Text = "l"+i;
        pan.Location = new Point(10, i * 100);
        pan.Size = new Size(200, 90);  // just an example
        pan.Controls.Add(l);
        this.Controls.Add(pan);

    }
}