<asp:GridView ID="listCds" runat="server"
        AutoGenerateColumns="False" BackColor="White" BorderColor="#CCCCCC"
        BorderStyle="None" BorderWidth="1px" CellPadding="3" DataKeyNames="cdNo"
        Width="95%" onrowcancelingedit="listCds_RowCancelingEdit"
        onrowdeleting="listCds_RowDeleting" onrowediting="listCds_RowEditing"
        onrowupdating="listCds_RowUpdating" AllowPaging="True"
        onpageindexchanging="listCds_PageIndexChanging" PageSize="5"  >

protected void listCds_PageIndexChanging(object sender, GridViewPageEventArgs e)
        {
            listCds.PageIndex = e.NewPageIndex;//paging index
            //code to bind the grid view
        }

protected void listCds_PageIndexChanging(object sender, GridViewPageEventArgs e)
        {
            listCds.PageIndex = e.NewPageIndex;
            SqlConnection conn = new SqlConnection(@"data source=LAKSHANYA\SQLEXPRESS;database=master;integrated security=true");
            conn.Open();
            SqlCommand cmd = new SqlCommand("select * from addcds", conn);
            SqlDataAdapter da = new SqlDataAdapter(cmd);
            DataSet ds = new DataSet();
            da.Fill(ds);
            listCds.DataSource = ds;
            listCds.DataBind();
        }