---
title: "Modal Popup Ajax Extender is not working"  
description: "Modal Popup Ajax Extender is not working"  
author: "Anonymous User"  
published: 2014-10-27  
updated: 2014-10-27  
canonical: https://www.mindstick.com/forum/2439/modal-popup-ajax-extender-is-not-working  
category: "asp.net"  
tags: ["c#", "asp.net", "model"]  
reading_time: 3 minutes  

---

# Modal Popup Ajax Extender is not working

```
<%@ Page Language="C#" MasterPageFile="~/Main.Master" AutoEventWireup="true" CodeBehind="Menu.aspx.cs" Inherits="UserPanel.Menu" Title="Untitled Page" %> <%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="asp" %> <asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" runat="server"><style type="text/css">    .modalBackground    {        background-color: Black;        filter: alpha(opacity=90);        opacity: 0.8;    }    .modalPopup    {        background-color: #FFFFFF;        border-width: 3px;        border-style: solid;        border-color: black;        padding-top: 10px;        padding-left: 10px;        width: 300px;        height: 140px;    }</style>   <asp:ScriptManager ID="ScriptManager1" runat="server"/>	                          <div class="row">                    <div class="col-md-12">                        <h1 class="page-head-line">Menu</h1>                        <h1 class="page-subhead-line">Select Your Menu !</h1>                     </div>                </div>                                <!-- /. ROW  -->                <div class="row">                           <div class="panel panel-info">                        <div class="panel-heading">                           *You Can Place On Order at a Time !                        </div>                                              <div align="center"><asp:LinkButton ID="LB_Sheesha"  runat="server">Order Normal Shesha <br /> <asp:LinkButton ID="LB_Special" runat="server">Order Special Shesha                        </div>                            </div>    <asp:Panel ID="Panel1" runat="server" visible=false  >                     <table>      <tr>      <td>          <asp:Label ID="Label1" runat="server" Text="Label"> Select Flavour            </td>            <td>                <asp:DropDownList ID="Drop_nsheesha" runat="server">                          </td>           </tr></table>         <asp:Button ID="B_Next" class="btn btn-info" runat="server" Text="Next" />   <asp:Button ID="B_Cancel" class="btn btn-info" runat="server" Text="Cancel" />                                       </div>         <asp:ModalPopupExtender ID="ModalPopupExtender2" runat="server"      TargetControlID="LB_Sheesha" PopupControlID="Panel1" DropShadow="true"         OkControlID="B_Next"  CancelControlID = "B_Cancel"         OnOkScript="onOK()" BackgroundCssClass="modalBackground"         oncancelscript="Are You Sure ? " >
```

## Replies

### Reply by marcel ethan

try this:\
change "Panel1" visible=false to style="display: none"


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Original Source: https://www.mindstick.com/forum/2439/modal-popup-ajax-extender-is-not-working

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