how to use progressbar

For using progress bar u have to use a timer control also .
Enable timer in property box and writ code as:

private void timer1_Tick(object sender, EventArgs e)
       {
           int d;
           for (d = 0; d<= 100; d++)
               progressBar1.Value = d;
           this.Visible = false;
           Login l = new Login();  // Show whatever you want
           l.Show();
           timer1.Enabled = false;  //Disable timer
       }

And for progress bar , initialize value of it to 100