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Version Q2 2011 released 07/12/2011
select

ComboBox / CheckBoxes

Selected multiple book genres:
select
Checked Items:


  • RadComboBox fully supports checkboxes, which are displayed next to the RadComboBoxItems. You can enable the checkboxes mode by setting the combobox's CheckBoxes property to "True". With the checkboxes you can 'select' multiple items. The checkbox selection is different from the standard selection of the combobox, so there is actually no single selected item.

    Both on the client and the server sides, you can use the get_checkedItems() and CheckedItems properties to get all items, which are checked.

    The Text property of the combobox holds the concatenated texts of all checked items. The SelectedValue property is empty because there is no single selected item. You can get the values of all checked items from the aforementioned properties.

Source Code

C# VB.NET
Show code in new window Demo isolation steps
  • <%@ Page AutoEventWireup="true" CodeFile="DefaultCS.aspx.cs" Inherits="Telerik.Web.Examples.ComboBox.CheckBoxes.DefaultCS"
        Language="c#" %>

    <%@ Register TagPrefix="qsf" Namespace="Telerik.QuickStart" %>
    <%@ Register TagPrefix="qsf" TagName="Header" Src="~/Common/Header.ascx" %>
    <%@ Register TagPrefix="qsf" TagName="HeadTag" Src="~/Common/HeadTag.ascx" %>
    <%@ Register TagPrefix="qsf" TagName="Footer" Src="~/Common/Footer.ascx" %>
    <%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head runat="server">
        <qsf:HeadTag runat="server" ID="Headtag1" />
        <style type="text/css">
            .qsfButtonBigger
            {
                display: block !important;
                margin: 2em 0;
            }
            
            .module
            {
                margin-bottom: 1em;
            }
        </style>
    </head>
    <body class="BODY">
    <form runat="server" id="mainForm" method="post">
        <telerik:RadScriptManager runat="server" ID="RadScriptManager1" />
        <qsf:Header runat="server" ID="Header1" NavigationLanguage="C#" />
        
        <div class="title">Selected multiple book genres:</div>
        <telerik:RadAjaxPanel runat="server" ID="RadAjaxPanel1">
            <div class="list-panel">
                <telerik:RadComboBox ID="RadComboBox1" runat="server" CheckBoxes="true" Width="300px">
                    <Items>
                        <telerik:RadComboBoxItem Text="Arts" />
                        <telerik:RadComboBoxItem Text="Biographies" />
                        <telerik:RadComboBoxItem Text="Children's Books" />
                        <telerik:RadComboBoxItem Text="Computers � Internet" />
                        <telerik:RadComboBoxItem Text="Cooking" />
                        <telerik:RadComboBoxItem Text="History" />
                        <telerik:RadComboBoxItem Text="Fiction" />
                        <telerik:RadComboBoxItem Text="Mystery" />
                        <telerik:RadComboBoxItem Text="Nonfiction" />
                        <telerik:RadComboBoxItem Text="Romance" />
                        <telerik:RadComboBoxItem Text="Science Fiction " />
                        <telerik:RadComboBoxItem Text="Travel" />
                    </Items>
                </telerik:RadComboBox>
                    
    <asp:Button
    ID="Button1" runat="server"
    Text="Get Checked Items" CssClass="qsfButtonBigger"
    OnClick="Button1_Click" />
                        
                <div class="module">
                    <strong>Checked Items:</strong>
                    <br /><br />
                    <asp:Label ID="itemsClientSide" runat="server" BorderStyle="None" CssClass="text" />
                </div>
            </div>
        </telerik:RadAjaxPanel>    

        <qsf:Footer runat="server" ID="Footer1" />
    </form>
    </body>
    </html>

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