Ajax Editor not working

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I am getting the following Error while loading the page.

0x800a138f - JavaScript runtime error: Unable to get property 'UI' of undefined or null reference

Below is my code.

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" %>
<%@ Register assembly="AjaxControlToolkit" namespace="AjaxControlToolkit.HTMLEditor" tagprefix="cc1" %>
<%@ Register assembly="AjaxControlToolkit" namespace="AjaxControlToolkit" tagprefix="asp" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:ScriptManager ID="ScriptManager1" runat="server">
        
        <br />
        <cc1:Editor ID="Editor1"  runat="server" />
    </div>
    </form>
</body>
</html>

Posted 21-Jan-14 21:08pm

Robymon

Updated 21-Jan-14 21:17pm

Peter Leow

v2

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Kornfeld Eliyahu Peter · Answer 1 · 2014-01-21T21:41:00

Solution 1

Use ScriptManager from AjaxToolkit...

ASP.NET

<ajaxtoolkit:toolkitscriptmanager  runat="server" id="ScriptManager1" />

Posted 21-Jan-14 21:41pm

Kornfeld Eliyahu Peter

Updated 22-Jan-14 9:21am

v2

Manoj_Sharma · Answer 2 · 2014-01-21T23:06:00

ASP.NET

<![CDATA[<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" %>]]>
<![CDATA[<%@ Register assembly="AjaxControlToolkit" namespace="AjaxControlToolkit.HTMLEditor" tagprefix="asp" %>]]>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
  <form id="form1" runat="server">
    <asp:toolkitscriptmanager id="ToolkitScriptManager1" runat="server" xmlns:asp="#unknown">
    </asp:toolkitscriptmanager>
    <asp:editor id="Editor1" runat="server" xmlns:asp="#unknown" />
  </form>
</body>
</html>