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How to disable combo box items that are in RadWindow on button click from server side

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

Dorababu asked on 21 Jun 2012, 10:38 AM

I would like to disable some items in combo box when I click on button . What I am doing is on button click I will show a rad window with a combo box , when that was loaded I would like to disable some items

My design is as follows

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

<%@ 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">

<telerik:RadScriptManager ID="radScript" runat="server">

</telerik:RadScriptManager>

<div>

<telerik:RadWindowManager ID="RadWindowManager1" runat="server" Behavior="Default"

InitialBehavior="None">

<Windows>

<telerik:RadWindow ID="RadWindow1" runat="server" Behaviors="Default" InitialBehaviors="None"

OpenerElementID="btn" Width="650" Height="480" VisibleOnPageLoad="false">

<ContentTemplate>

<telerik:RadComboBox ID="rdcmb" runat="server">

<Items>

<telerik:RadComboBoxItem Text="One" Value="One" />

<telerik:RadComboBoxItem Text="Two" Value="Two" />

<telerik:RadComboBoxItem Text="Three" Value="Three" />

<telerik:RadComboBoxItem Text="Four" Value="Four" />

</Items>

</telerik:RadComboBox>

<telerik:RadTextBox ID="rdText" runat="server">

</telerik:RadTextBox>

<telerik:RadButton ID="radbtn" runat="server" Text="Save" OnClick="radbtn_Click">

</telerik:RadButton>

</ContentTemplate>

</telerik:RadWindow>

</Windows>

</telerik:RadWindowManager>

<asp:Button ID="btn" runat="server" OnClick="btn_Click" Text="Click" />

</div>

</form>

</body>

</html>

My code on button click is as follows

protected void btn_Click(object sender, EventArgs e)

{

foreach (RadComboBoxItem item in rdcmb.Items)

{

if (item.Text == "One" || item.Text == "Two")

{

item.Remove();

}

RadWindowManager1.Windows[0].VisibleOnPageLoad = true;

}

But I am unable to achieve the required.

How to disable combo box items that are in RadWindow on button click from server side

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