My class doesn't work in windows application

Question

I created a class called "NewLabel" and it's supposed to make a label on windows application. 

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

namespace WindowsFormsApplication2

{

    public partial class Form1 : Form

    {

        public Form1()

        {

            InitializeComponent();

        }

        public class NewLabel: Form1 

        {

            public NewLabel()

            {

                Label test = new Label();

                test.Text = "This is a label";

                test.Location = new Point(100, 100);

test.Visible = true;

                this.Controls.Add(test);              

            }

        }

        private void CreateLabelButton_Click(object sender, EventArgs e)

        {

            NewLabel TestLabel = new NewLabel();

        }       

    }

}

When I create an instance of my class, the constructor method should be called and create a new label and location (100,100). The problem is the label does not show on the form. 

I just started C# a few weeks ago and would like to know where the problem is in my code. 

Thanks.