Hello everyone,

I created a web user control called MultiSelectDropDown using RadComboBox based on the example Telerik.com provided.
When I drag and drop this control into a web page, It works perfect, My problem is , when the page has 2 or more MultiSelectDropDown ,
Only the one works, for the rest of them, when I click check box items, the text in combo box always empty. I hope some one can help me out.I appreciate it in advanced. Below is code:
ASCX code:

<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="MultiSelectDropDown.ascx.cs" Inherits="G2WebFramework.RebillRejectedData.Controls.MultiSelectDropDown" %>
<%@ Register assembly="Telerik.Web.UI" namespace="Telerik.Web.UI" tagprefix="telerik" %>



 <style type="text/css">
     .example-panel
{
    width:352px;
    height: 30px;
    margin: 91px 0 0 68px;
    background: transparent url("Img/background.png") no-repeat 0 0;
}

.example-panel ul.combobox-panel
{
    list-style:none;
    margin:156px 0 0 75px;
    padding:0;
    float:left;
}

.example-panel ul.status-panel
{
    list-style:none;
    padding:0;
    margin:40px 0 0 117px;
    float:left;
}

.example-panel ul.status-panel label
{
    font: 14px 'Segoe UI', Arial, sans-serif;
    color: #fff;
    padding-right: 9px;
}

.example-panel ul.status-panel li
{
    float:left;
    font: 14px 'Segoe UI', Arial, sans-serif;
    color: #ffb400;
    padding-right: 15px;
}

* html ul.combobox-panel
{
    display:inline; /*double margin bug*/
}

.example-panel ul.combobox-panel li
{
    float:left;
}

.example-panel ul.combobox-panel li label
{
    font: 12px 'Segoe UI', Arial;
    color: #fff;
    margin-right: 5px;
    margin-left: 40px;
}

.combo-item-template input,
.combo-item-template label
{
    vertical-align:top;
}

.combo-item-template img
{
    vertical-align:top;
}

.example-panel .rent-button
{
    float:right;
    width: 73px;
    height:21px;
    background: transparent url('Img/button.png') no-repeat 0 0;
    text-decoration:none;
    color: #000;
    text-align:center;
    line-height:21px;
    margin: 18px 30px 0 auto;
}
</style>

<script type="text/javascript">
//        <![CDATA[
            var cancelDropDownClosing = false;
            
            function StopPropagation(e)
            {
                //cancel bubbling
                e.cancelBubble = true;
                if (e.stopPropagation)
                {
                    e.stopPropagation();
                }
            }

            function onDropDownClosing()
            {
                cancelDropDownClosing = false;
            }

            function onCheckBoxClick(chk)
            {
                var combo = $find("<%= RadComboBox1.ClientID %>");
                
                //prevent second combo from closing
                cancelDropDownClosing = true;
                //holds the text of all checked items
                var text = "";
                //holds the values of all checked items
                var values = "";
                //get the collection of all items
                var items = combo.get_items();
                //enumerate all items
                for (var i = 0; i < items.get_count(); i++)
                {
                    var item = items.getItem(i);
                    //get the checkbox element of the current item
                    var chk1 = $get(combo.get_id() + "_i" + i + "_chk1");
                    if (chk1.checked)
                    {
                        text += item.get_text() + "," ;
                        values += item.get_value() + ",";
                    }
                }
                //remove the last comma from the string
                text = removeLastComma(text);
                values = removeLastComma(values);
            
                if (text.length > 0)
                {
                    //set the text of the combobox
                    combo.set_text(text);
                    combo.set_value(text);
                }
                else
                {
                    //all checkboxes are unchecked
                    //so reset the controls
                    combo.set_text("");
                   
                }
            }

            //this method hides the nodes of the treeeview depending on
            //the checked items in the first combobox
           

            //this method removes the ending comma from a string
            function removeLastComma(str)
            {
                return str.replace(/,$/,"");
            }

           

            function OnClientDropDownClosingHandler(sender, e)
            {
                //do not close the second combo if
                //a checkbox from the first is clicked
                e.set_cancel(cancelDropDownClosing);
            }
//         ]]>
        </script>
        
        <%-- <telerik:RadFormDecorator ID="FormDecorator1" runat="server" DecoratedControls="all" ControlsToSkip="Scrollbars"></telerik:RadFormDecorator>--%>
                    <telerik:RadComboBox ID="RadComboBox1" runat="server" HighlightTemplatedItems="true"
                                AllowCustomText="true" Width="131px"    
    OnClientDropDownClosed="onDropDownClosing"  ForeColor="Navy"    
    BorderColor="Navy" AutoPostBack="True"  >
    
   
                                <ItemTemplate>
                                   <div id="ListDiv" onclick="StopPropagation(event)" class="combo-item-template" runat="server" >
                                        <asp:CheckBox runat="server" ID="chk1" Checked="false" onclick="onCheckBoxClick(this)" BorderColor="Navy"/>
                                        <asp:Label runat="server" ID="Label1" AssociatedControlID="chk1" ForeColor="Navy">

                                           <%# Eval(RadComboBox1.DataTextField) %>

                                        </asp:Label>
                                   </div>
                                </ItemTemplate>
                      </telerik:RadComboBox>
         
          ____________________________________
C# code:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace G2WebFramework.RebillRejectedData.Controls
{
    public partial class MultiSelectDropDown : System.Web.UI.UserControl
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {

                RadComboBox1.DataBind();
            }
               
        }
        

        //selected checkbox text
        public string sText
        {
            get { return RadComboBox1.Text; }
        }

        public Object DataSource
        {
            get { return RadComboBox1.DataSource; }
            set { RadComboBox1.DataSource = value; }
        }

        public string DataTextField
        {
            get { return RadComboBox1.DataTextField; }
            set { RadComboBox1.DataTextField = value; }
        }
        public string DataValueField
        {
            get { return RadComboBox1.DataValueField; }
            set { RadComboBox1.DataValueField = value; }
        }

      
       
    }
}             
   

Testing code:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using G2WebBL.DataMappers.RebillRejectedData;

namespace G2WebFramework.RebillRejectedData
{
    public partial class Test : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {

                BindData_Company();
                BindData_LEC();
            }
                
        }

        internal void BindData_Company()
        {

            var DBObj = new RebillRejectedDataAccess("BOSS_SB");
            var DT = DBObj.SelectCompany();
            MultiSelectDropDown1.DataSource = DT;
            MultiSelectDropDown1.DataTextField = "Company";
            MultiSelectDropDown1.DataValueField = "Company";

        }
        internal void BindData_LEC()
        {
            var DBObj = new RebillRejectedDataAccess("BOSS_SB");
            var DT = DBObj.SelectLEC();
            MultiSelectDropDown2.DataSource = null;
            MultiSelectDropDown2.DataSource = DT;
            MultiSelectDropDown2.DataTextField = "LEC";
            MultiSelectDropDown2.DataValueField = "LEC";

        }
        
    }
}          
         

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Best regards,
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