How to work the progress bar continuous style in windows application

private void btnSubmit_Click(object sender, EventArgs e)
        {

           string connstring = "Data Source=IICSS75;User ID=pmisdbadmin;Password=pmisdbadmin;Initial Catalog= PMA23052013";

            SqlConnection con = new SqlConnection(connstring);

            SqlDataAdapter da = new SqlDataAdapter("Select * from ATTENDANCE", con);

            DataSet ds = new DataSet();
            da.Fill(ds);

           

            dataGridView1.Visible = true;
           

            progressBar1.Visible = true;
            progressBar1.Show();

            progressBar1.Minimum = 1;
            progressBar1.Value = 1;
            progressBar1.Step = 1;
           
            progressBar1.Maximum = ds.Tables[0].Rows.Count;

            for (int i = 1; i < ds.Tables[0].Rows.Count; i++)
            {
                progressBar1.PerformStep();

                  x = 1;
                

            }
            if (x == 1)
            {
                dataGridView1.DataSource = ds;
            }