Title show while timer is enabled

Question

so I have a problem where I want to make a label pop up when timer is enabled. I tried writing this but it just doesn't work. I have set every object property as needed, but still there is some kind of problem. Can you help me please? Thanks.

private void timer1_Tick(object sender, EventArgs e)
    {
        if (button3Click == true && FullNameBOX.Text == "")
        {
            timer1.Start();
             while(timer1.Enabled == true)
            {
                label5.Show();
            }
            
            timer1.Stop();

        }
        else if(timer1.Enabled == false)
        {
            label5.Hide();
        }
        else
        {

        }