Bdtjtk

When I click on the DataPager of the listview, the full page gets refreshed, despite the control is on a update panel. I would expect only the list view is updated. Here is the aspx code
pertaining to the problem.

<asp:UpdatePanel ID="UpdatePanel1" runat="server">

      <ContentTemplate>



           <asp:ListView ID="lv"  runat="server" 

              ItemPlaceholderID="ItemPlaceHolder" 



              >

            <LayoutTemplate>

               <div class="container">

                   <div class="row">

                       <div runat="server" class="col-sm-4" id="ItemPlaceHolder"></div>

                   </div>

               </div>

                <asp:DataPager ID="lvDataPager" runat="server"

                    QueryStringField ="id"

                    PageSize="3">

                    <Fields>

                        <asp:NumericPagerField ButtonType="Button"/>

                    </Fields>

                </asp:DataPager>

             </LayoutTemplate>



              <ItemTemplate>

                <div class="col-sm-4"> 

                    Title: <%# Eval("title") %> <br />

                    Href: <%# Eval("href") %> <br />

                    Visited: <%# Eval("visited") %><br />



                </div>



              </ItemTemplate>





          </asp:ListView>

</ContentTemplate>    

    </asp:UpdatePanel>

The code behind:
In page load event, I create the data source which tne I bind to the ListView.

 protected void Page_Load(object sender, EventArgs e)

        {

            if (IsPostBack) return;

            DataTable dt = new DataTable();

            if (ViewState["data"] != null)

            {

                dt = (DataTable)ViewState["data"];

            }

            else

            {

                dt.Columns.Add("id");

                dt.Columns.Add("title");

                dt.Columns.Add("href");

                dt.Columns.Add("visited");

                dt.Rows.Add(0, "google", "http://www.google.com", false);

                dt.Rows.Add(1, "bing", "http://www.bing.com", false);

                dt.Rows.Add(2, "yahoo", "http://www.yahoo.com", false);

                for (int i = 3; i <= 30; i++)

                {

                  dt.Rows.Add(i, "mywebsite", "http://www.mywebsite.com", false);

                }

                ViewState["data"] = dt;



            }



            BindLV();

}



private void BindLV()

        {

            DataTable dt = (DataTable)ViewState["data"];

            lv.DataSource = dt;

            lv.DataBind();

        }