Won't Fix
Last Updated: 19 Apr 2022 13:52 by ADMIN
Created on: 10 Nov 2017 16:28
Category: FormDecorator
Type: Bug Report
Unable to get property 'dispatchEvent' of undefined or null reference error in IE11
We are seeing a JavaScript error when we select an Option in a Select control with a ASP Postback on IE11 via keyboard input.
<%@ Page Language="C#" AutoEventWireup="true" Inherits="System.Web.UI.Page" %>
<script runat="server">
    void Page_Load(object sender, EventArgs e)
        decorator.DecoratedControls = FormDecoratorDecoratedControls.Select;
<!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" >
<title>DD Test Page</title>
<form id="DialogForm" runat="server">
    <telerik:RadScriptManager runat="server" />
    <telerik:RadAjaxManager runat="server" />
    <telerik:RadFormDecorator ID="decorator" runat="server" DecorationZoneID="Panel1" EnableEmbeddedSkins="false" RenderMode="Lightweight" />
    <telerik:RadAjaxPanel ID="Panel1" runat="server">
        <asp:DropDownList ID="DD1" runat="server" AutoPostBack="true">
            <asp:ListItem Text="[Select]" Value="" />
            <asp:ListItem Text="T1" Value="1" />
            <asp:ListItem Text="T2" Value="2" />
        <asp:Button runat="server" Text="Refresh" />
Reproduce by clicking the DropDown control, and then pressing 'T', and then clicking on a blank section of the page.