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RadListBox with Ajax doesn't update on buttonclick

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ListBox

This is a migrated thread and some comments may be shown as answers.

sulejman Vezi asked on 16 Jul 2013, 02:00 PM

Hey Guys.
I'm having a silly problem with updating the radlistbox on buttonclick.

can you give me a hint.

Thnx in advance

------.aspx------

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="prova.aspx.cs" Inherits="Pages_prova" %>

<%@ Register Assembly="Telerik.Web.UI" Namespace="Telerik.Web.UI" TagPrefix="telerik" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

<head runat="server">

<title></title>

</head>

<body>

<form id="form1" runat="server">

<div>

<asp:ScriptManager runat="server" ID="scriptMgr1">

</asp:ScriptManager>

<table>

<tr>

<td align="left">

<telerik:RadListBox runat="server" ID="RL_PagesSource" Height="180px" Width="200px" ></telerik:RadListBox>

</td>

<td valign="top" align="center">

<br />

<telerik:RadButton ID="RB_PLeft" runat="server" Text=" > " Width="40px"

onclick="RB_PLeft_Click" SplitButtonCssClass=""

SplitButtonPosition="Right" ></telerik:RadButton><br /><br />

<telerik:RadButton ID="RB_PRight" runat="server" Text=" < " Width="40px"

SplitButtonCssClass="" SplitButtonPosition="Right" ></telerik:RadButton><br /><br />

<telerik:RadButton ID="RB_PLAll" runat="server" Text=" >> " Width="40" ></telerik:RadButton><br /><br />

<telerik:RadButton ID="RB_PRAll" runat="server" Text=" << " Width="40" ></telerik:RadButton><br /><br />

</td>

<td style="padding-left:30px;" align="left">

<telerik:RadListBox runat="server" ID="RL_PageDestination" Height="180" Width="200"

AutoPostBack="True" onselectedindexchanged="RL_PageDestination_SelectedIndexChanged"></telerik:RadListBox>

</td>

</tr>

</table>

</div>

<telerik:RadAjaxManager runat="server">

<AjaxSettings>

<telerik:AjaxSetting AjaxControlID="RB_PLeft">

<UpdatedControls>

<telerik:AjaxUpdatedControl ControlID="RL_PagesSource" />

<telerik:AjaxUpdatedControl ControlID="RL_PageDestination" />

</UpdatedControls>

</telerik:AjaxSetting>

</AjaxSettings>

</telerik:RadAjaxManager>

</form>

</body>

</html>

-----.aspx.cs----

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using Telerik.Web.UI;

public partial class Pages_prova : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

if (!Page.IsPostBack)

{

RL_PagesSource.Items.Add(new RadListBoxItem("aaaa", "asdf"));

RL_PagesSource.Items.Add(new RadListBoxItem("aasdf", "asdf"));

RL_PageDestination.Items.Add(new RadListBoxItem("aasasdfadf", "asdf"));

}

protected void RB_PLeft_Click(object sender, EventArgs e)

{

if (RL_PagesSource.Items.Count == 0 || RL_PagesSource.SelectedItem == null)

{

}

else

{

RadListBoxItem it = new RadListBoxItem();

it = RL_PagesSource.SelectedItem;

RL_PageDestination.Items.Add(new RadListBoxItem(it.Text, it.Value));

RL_PageDestination.DataBind();

// RL_PagesSource.SelectedItem.Remove();

// RL_PagesSource.DataBind();

}

protected void RL_PageDestination_SelectedIndexChanged(object sender, EventArgs e)

{

}

1 Answer, 1 is accepted

answered on 19 Jul 2013, 08:16 AM

Hello,

Could you elaborate a bit on the exact issue - what is the desired behavior, and how does it differ from the current behavior. Also, could you look at the following demo which demonstrates the Built-in transfer functionality in RadListBox:
http://demos.telerik.com/aspnet-ajax/listbox/examples/functionality/transfer/defaultcs.aspx

Regards,
Bozhidar
Telerik

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