Problem with refresh radlistview

[Fabio Cirillo]

hi...

this is my web page where i use a radlistview:

<form id="form1" runat="server">
<telerik:RadScriptManager ID="RadScriptManager1" runat="server">
</telerik:RadScriptManager>
<telerik:RadAjaxManager ID="RadAjaxManager1" runat="server">
<AjaxSettings>
<telerik:AjaxSetting AjaxControlID="ImageButtonRicerca">
<UpdatedControls>
<telerik:AjaxUpdatedControl ControlID="Panel1"
LoadingPanelID="RadAjaxLoadingPanel1" />
</UpdatedControls>
</telerik:AjaxSetting>
</AjaxSettings>
</telerik:RadAjaxManager>
<telerik:RadFormDecorator ID="QsfFromDecorator" runat="server"
DecoratedControls="Textbox" Skin="Sunset" />
<telerik:RadAjaxLoadingPanel ID="RadAjaxLoadingPanel1" runat="server"
Skin="Simple" BorderColor="#D5842B" BorderStyle="Double" BorderWidth="1px">
</telerik:RadAjaxLoadingPanel>
<div align="center" class="backgroundup">
<div align="center" class="banner">
<telerik:RadAjaxPanel ID="RadAjaxPanel1" runat="server" Height="85px" width="1024px">
<div style="padding-left:200px;">
<div class="profilesearch">
<asp:Panel ID="Panel1" runat="server" DefaultButton="ImageButtonRicerca" Height="55px">
<table style="width:620px; padding-top:6px">
<tr>
<td style="width: 360px; margin: 0px; border: 0px; padding: 0px; text-align: right;">
<telerik:RadTextBox ID="Txt_ricerca1" Runat="server"
EmptyMessage="Nominativo o azienda o categoria" Width="350px" Height="23px" Skin="" Font-Italic="True"
Font-Names="Verdana">
<EmptyMessageStyle ForeColor="Gray" Font-Italic="True" Font-Names="Verdana" />
<HoveredStyle Font-Italic="True" Font-Names="Verdana" ForeColor="#993300" />
</telerik:RadTextBox>
</td>
<td style="width: 260px; margin: 0px; border: 0px; padding: 0px; text-align: left;">
<telerik:RadTextBox ID="txt_ricerca2" Runat="server"
EmptyMessage="Città di residenza" Width="250px" Height="23px" Skin="" Font-Italic="True"
Font-Names="Verdana">
<EmptyMessageStyle ForeColor="Gray" Font-Italic="True" Font-Names="Verdana" />
<HoveredStyle Font-Italic="True" Font-Names="Verdana" ForeColor="#993300" />
</telerik:RadTextBox>
</td>
<td style="width: 80px; margin: 0px; border: 0px; padding: 0px;">
<asp:ImageButton ID="ImageButtonRicerca" runat="server"
ImageUrl="~/Image/cerca.png" />
</td>
</tr>
</table>
</asp:Panel>
</div>
</div>
</telerik:RadAjaxPanel>
</div>
<telerik:RadAjaxPanel ID="RadAjaxPanel2" runat="server" Width="700px"
HorizontalAlign="NotSet" LoadingPanelID="RadAjaxLoadingPanel1">
<div class="divresultmenu">
<telerik:RadMenu ID="RadMenu1" runat="server" Skin="Office2010Silver"
OnItemClick="RadMenu1_ItemClick">
<Items>
<telerik:RadMenuItem runat="server" Font-Names="Verdana" Font-Size="Small"
Text="Home page" Owner="RadMenu1">
</telerik:RadMenuItem>
<telerik:RadMenuItem runat="server" IsSeparator="True" Text="Root RadMenuItem2">
</telerik:RadMenuItem>
<telerik:RadMenuItem runat="server" Font-Names="Verdana" Font-Size="Small"
Text="Registrati in Trycontact">
</telerik:RadMenuItem>
</Items>
</telerik:RadMenu>
</div>
<div class="resultseparator">
</div>
<div style="font-family:Verdana" id="div_radlistview">
<telerik:RadListView ID="RadListView1" runat="server" DataKeyNames="idutente"
ItemPlaceholderID="Contenitore" AllowPaging="True" Skin="Office2010Silver"
Width="655px">
<LayoutTemplate>
<fieldset id="FieldSet1">
<legend>Risultati della ricerca:</legend>
<asp:PlaceHolder ID="Contenitore" runat="server"></asp:PlaceHolder>
<div>
<div style="float: left; margin-left: 30%;">
<telerik:RadButton ID="btnFirst" runat="server" Text="Prima" CommandName="Page" CommandArgument="First"
Enabled="<%#Container.CurrentPageIndex > 0 %>" Skin="Office2010Silver">
</telerik:RadButton>
<telerik:RadButton ID="btnPrev" runat="server" Text="Precedente" CommandName="Page" CommandArgument="Prev"
Enabled="<%#Container.CurrentPageIndex > 0 %>" Skin="Office2010Silver">
</telerik:RadButton>
<span style="vertical-align: top; position: relative; top: 4px">Pagina
<%#Container.CurrentPageIndex + 1 %>
di
<%#Container.PageCount%></span>
<telerik:RadButton ID="btnNext" runat="server" Text="Successiva" CommandName="Page" CommandArgument="Next"
Enabled="<%#Container.CurrentPageIndex + 1 < Container.PageCount %>" Skin="Office2010Silver">
</telerik:RadButton>
<telerik:RadButton ID="btnLast" runat="server" Text="Ultima" CommandName="Page" CommandArgument="Last"
Enabled="<%#Container.CurrentPageIndex + 1 < Container.PageCount %>" Skin="Office2010Silver">
</telerik:RadButton>
</div>
</div>
</fieldset>
</LayoutTemplate>
<ItemTemplate>
<div class="item">
<div class="image">
<asp:Image ID="Image1" runat="server" ImageUrl='<%# CType(Container.DataItem, PropertyUtente).imageprofile%>' Height="120px" Width="110px"/>
</div>
<div class="content">
<div class="user">
<b><%# CType(Container.DataItem, PropertyUtente).utente%></b>
</div>
<div class="description_category">
Categoria: <%# CType(Container.DataItem, PropertyUtente).Desccategoria%>
</div>
<div class="description_city">
Città: <%# CType(Container.DataItem, PropertyUtente).Desccomune%></div>
<div class="description_phone">
Telefono: <%# CType(Container.DataItem, PropertyUtente).Telefono%></div>
<div class="description_email">
Email: <%# CType(Container.DataItem, PropertyUtente).Email%>
</div>
<div class="item_button">
<telerik:RadButton ID="RadButton1" runat="server" Text="Visualizza biglietto completo" Width="170px" Skin="Office2010Silver"
OnClick="RadButton1_Click">
</telerik:RadButton>
</div>
</div>
</div>
</ItemTemplate>
</telerik:RadListView>
</div>
</telerik:RadAjaxPanel>
<div align="center" style="background-image: url('Image/backgroundTeca2.jpg'); background-repeat: repeat-x; height: 33px;" id="under">
</div>
</div>
</form>

this is my code behind with i load racord in the radlistview:

Imports System
Imports System.Data
Imports System.Web
Imports System.Data.SqlClient
Imports Telerik.Web.UI
Imports System.IO
Imports System.Web.UI.HtmlControls

Private Loadsearch As New GestoreUtente
#Region "routine"
    Private Sub Carica_risultati(ByVal _str1 As String, ByVal _str2 As String)
        Dim lista As List(Of PropertyUtente) = Loadsearch.Search(_str1, _str2)
        RadListView1.DataSource = lista
        RadListView1.DataBind()
    End Sub
#End Region

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        If Not IsPostBack Then
            Dim _str1, _str2 As String
            _str1 = Request.QueryString("_str1")
            _str2 = Request.QueryString("_str2")
            Carica_risultati(_str1, _str2)
        End If
    End Sub

    Protected Sub ImageButtonRicerca_Click(sender As Object, e As System.Web.UI.ImageClickEventArgs) Handles ImageButtonRicerca.Click
        Carica_risultati(Txt_ricerca1.Text, Txt_ricerca2.Text)
    End Sub

When i load this page of another page and start the event page_load, the record in the radlistview see all perfect.
But if i start the search in this page and i click on button search, the query sql function perfect and load the new record but dont see in the radlsitview. i always see the same records...why?

[Marin]

Hello,

 It seems there is a problem with the ajax settings on the page. We recommend using either RadAjaxManager or RadAjaxPanel on the page, but not simultaneously both of them because this can cause issues. You can try to disable all the ajax on the page and verify that the databinding logic for the ListView works as expected (including the case with the search button). Additionally you can also utilize the advanced databinding approach of the control to provide more versatile options in various scenarios. Once you make sure that the page works correctly without ajax you can go for ajaxifying the controls using the preferred approach (either RadAjaxManager or RadAjaxPanel). More information can also be found here:
http://www.telerik.com/help/aspnet-ajax/listview-declarative-definition.html (ajaxifying with RadAjaxPanel)

Greetings,
Marin
the Telerik team