using next button in c#

protected void Page_Load(object sender, EventArgs e)
    {
                con = new SqlConnection();
        con.ConnectionString = @"Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\Database.mdf;Integrated Security=True;User Instance=True";
        con.Open();

        ds = new DataSet();
        string sql = "SELECT * FROM Internet";
        da = new SqlDataAdapter(sql, con);
        da.Fill(ds, "Internet");
        Maxrows = ds.Tables["Internet"].Rows.Count;

        Label2.Text = inc.ToString();
        Label3.Text = Maxrows.ToString(); // displays the number of rows
       Records();
        con.Close();
    }

    private void Records()
    {
        drow = ds.Tables["Internet"].Rows[inc];
        Label1.Text = drow.ItemArray.GetValue(1).ToString();
        inc++;

    }


protected void Button1_Click(object sender, EventArgs e)
    {
if (inc <= Maxrows )
        {

            Records();
            Label2.Text = inc.ToString(); // outputs the row number which is being displayed
        }
    }
}

I have this above code and I am trying to display a number of records from a database on a web application. when I first load the page it load the first record. I click the next button and displays the second button. I have 3 records but the 3rd record never displays why? please can anyone help?