Thanks for your reply.
I want to read the values of all the checkboxes in one postback.
Here is an example:
<%@ Page Language="VB" AutoEventWireup="false" CodeFile="Test_statisk.aspx.vb" Inherits="Test_statisk" %>
<!DOCTYPE html>
<
head
runat
=
"server"
>
<
title
></
title
>
</
head
>
<
body
>
<
form
id
=
"form1"
runat
=
"server"
>
<
div
>
<
telerik:RadScriptManager
ID
=
"RadScriptManager1"
runat
=
"server"
>
<
Scripts
>
<
asp:ScriptReference
Assembly
=
"Telerik.Web.UI"
Name
=
"Telerik.Web.UI.Common.Core.js"
>
</
asp:ScriptReference
>
<
asp:ScriptReference
Assembly
=
"Telerik.Web.UI"
Name
=
"Telerik.Web.UI.Common.jQuery.js"
>
</
asp:ScriptReference
>
<
asp:ScriptReference
Assembly
=
"Telerik.Web.UI"
Name
=
"Telerik.Web.UI.Common.jQueryInclude.js"
>
</
asp:ScriptReference
>
</
Scripts
>
</
telerik:RadScriptManager
>
<
telerik:RadPanelBar
ID
=
"radPanelBar"
Runat
=
"server"
style
=
"margin-right: 117px"
Width
=
"353px"
>
<
Items
>
<
telerik:RadPanelItem
runat
=
"server"
Text
=
"Main 1"
>
<
Items
>
<
telerik:RadPanelItem
runat
=
"server"
Text
=
""
>
<
ItemTemplate
>
<
asp:CheckBox
ID
=
"cb11"
Text
=
"cb11"
runat
=
"server"
/>
</
ItemTemplate
>
</
telerik:RadPanelItem
>
</
Items
>
</
telerik:RadPanelItem
>
<
telerik:RadPanelItem
runat
=
"server"
Text
=
"Main 2"
>
<
Items
>
<
telerik:RadPanelItem
runat
=
"server"
Text
=
""
>
<
ItemTemplate
>
<
asp:CheckBox
ID
=
"cb21"
Text
=
"cb21"
runat
=
"server"
/>
</
ItemTemplate
>
</
telerik:RadPanelItem
>
<
telerik:RadPanelItem
runat
=
"server"
Text
=
""
>
<
ItemTemplate
>
<
asp:CheckBox
ID
=
"cb22"
Text
=
"cb22"
runat
=
"server"
/>
</
ItemTemplate
>
</
telerik:RadPanelItem
>
</
Items
>
</
telerik:RadPanelItem
>
<
telerik:RadPanelItem
runat
=
"server"
Text
=
"Main 3"
>
<
Items
>
<
telerik:RadPanelItem
runat
=
"server"
Text
=
""
>
<
ItemTemplate
>
<
asp:CheckBox
ID
=
"cb11"
Text
=
"cb31"
runat
=
"server"
/>
</
ItemTemplate
>
</
telerik:RadPanelItem
>
<
telerik:RadPanelItem
runat
=
"server"
Text
=
""
>
<
ItemTemplate
>
<
asp:CheckBox
ID
=
"cb11"
Text
=
"cb32"
runat
=
"server"
/>
</
ItemTemplate
>
</
telerik:RadPanelItem
>
</
Items
>
</
telerik:RadPanelItem
>
</
Items
>
</
telerik:RadPanelBar
>
<
br
/>
<
asp:Button
ID
=
"btnShowSelected"
runat
=
"server"
Text
=
"Show selected"
/>
<
br
/>
</
div
>
<
asp:Label
ID
=
"lblText"
runat
=
"server"
></
asp:Label
>
</
form
>
</
body
>
</
html
>