Last time i use Editor of ajaxcontroltoolkit is very fine.But now i have just this error on browser when i run Editor.This is picture of result when i run on Firefox 5.0.1 version:

And this is result when i run IE 8:

And code:I using usercontrol
<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="ajaxcontroltoolkit_Editor.ascx.cs" Inherits="user_control_ajaxcontroltoolkit.controls.ajaxcontroltoolkit_Editor" %>
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit.HTMLEditor"
TagPrefix="cc1" %>
I use Ajaxcontroltoolkit 4 and visual 2010.
I don't khow to fix it.Please tell me know .Thanks for watching!!
viet vo quocPosted Jan 19, 2012, 10:58 AM
Abhimanyu K VatsaPosted Jan 19, 2012, 5:18 AM
viet vo quocPosted Jan 18, 2012, 9:21 PM
But the result don't change. I changed follow your way but it's like previous. Please help me solve me!Thanks. I try and search on google alot way but it haven't solved yet,
Abhimanyu K VatsaPosted Jan 16, 2012, 1:35 AM
Use Reference as:-
------------------------
<%@ Register assembly="AjaxControlToolkit" namespace="AjaxControlToolkit.HTMLEditor" tagprefix="cc1" %>
In the body of the page:-
----------------------------
In the code-behind:-
-------------------------
protected void btnSubmit_Click(object sender, EventArgs e)
{
ltlResult.Text = Editor1.Content;
}