How would I make an object visible once a checkbox has been checked?

Im wondering how I would reveal a label, and a textbox once a checkbox has been checked.

I know in my project, everything below initialize component starts once the form is visible, so i try this.

public Form2()
{
    InitializeComponent();
    if (checkBox1.Checked == true)
    {
        label9.Visible = true;
        textBox4.Visible = true;
    }
    else
    {
        label9.Visible = false;
        textBox4.Visible = false;
    }
}

but that doesnt work, and so i put it in a while(true) loop, which is just an infinite loop

public Form2()
{
    while (true)
    {
        InitializeComponent();
        if (checkBox1.Checked == true)
        {
            label9.Visible = true;
            textBox4.Visible = true;
        }
        else
        {
            label9.Visible = false;
            textBox4.Visible = false;
        }
    }
}

but that doesnt work either, if someone knows the answer, please let me know :).