How to open a form in a thread and force it to stay open

Question

I am still having problems with figuring out how to create winforms in a separate UI thread that I discussed here.

In trying to figure this out I wrote the following

Answer 1

private void button1_Click(object sender, EventArgs e)
{
    var t = new Thread(RunNewForm);
    t.Start();
}
public static void RunNewForm()
{
     Application.Run(new Form2());
}