Progress Bar in C# Windows Application

How to work Progress Bar in C# 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 WindowsFormsApplication1

{

    public partial class Form1 : Form

    {

        int i = 15;

        public Form1()

        {

            InitializeComponent();

        }

        private void timer1_Tick(object sender, EventArgs e)

        {

            i--;

            if (i > 1)

                progressBar1.PerformStep();

            if (i < 1)

                i = 0;

            if (i == 0)

            {

                timer1.Stop();

                //Login objlogin = new Login();

                //objlogin.Show();

                //this.Hide();

            }

        }

        private void Form1_Load(object sender, EventArgs e)

        {

             timer1.Start();

        }

    }

}