Solved: adding Ajax Control Toolkit

Hi experts,

I'm using Visual Studio 2010.
I create a blank asp.net website.
I'm using VB as the language.

After I created my blank website I went to this link:
http://ajaxcontroltoolkit.codeplex.com

I downloaded the Ajax Control Toolkit by clicking the big purple download button found at this link.

The file that is downloaded is called: AjaxControlToolkit.Binary.NET40.zip

So I unzipped it.

So then I right clicked on my project and Added a reference and then selected AjaxControlToolkit.dll from the file that I just unzipped.

So after I added this reference my project looks like this:

If you scroll down the page at this link, they are doing an example using the HtmlEditorExtender.
http://ajaxcontroltoolkit.codeplex.com

I'm trying to do this same example.

So then in my project in the page called Test1.aspx
this is what my code looks like:

<%@ Page Language="VB" AutoEventWireup="false" CodeFile="Test1.aspx.vb" Inherits="Test1" %>
<%@ Register TagPrefix="asp" Namespace="AjaxControlToolkit" Assembly="AjaxControlToolkit"%>
<!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">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:ToolkitScriptManager ID="ToolkitScriptManager1" runat="server">
        </asp:ToolkitScriptManager>
        <asp:TextBox
        ID="txtComments"
        TextMode="MultiLine"
        Columns="60"
        Rows="8"
        runat="server" />
        <asp:HtmlEditorExtender ID="HtmlEditorExtender1"
        TargetControlID="txtComments"
        runat="server" />
    </div>
    </form>
</body>
</html>

Open in new window

But when I run this page I get this error:

Does anyone know why I'm getting this error and my Ajax HTMLTextEditor is not working?
Did I add the ajax toolkit wrong?

This is what my web.config looks like:

<?xml version="1.0"?>

<!--
  For more information on how to configure your ASP.NET application, please visit
  http://go.microsoft.com/fwlink/?LinkId=169433
  -->

<configuration>
    <system.web>
        <compilation debug="false" strict="false" explicit="true" targetFramework="4.0" />
    </system.web>

</configuration>

Open in new window

<%@ Page Language="VB" AutoEventWireup="false" CodeFile="Test1.aspx.vb" Inherits="Test1" %> <%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="ajaxToolkit" %> <!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"> <head runat="server"> <title></title> </head> <body> <form id="form1" runat="server"> <div> <ajaxToolkit:ToolkitScriptManager runat="Server" EnablePartialRendering="true" ID="ScriptManager1" /> <asp:TextBox ID="txtComments" TextMode="MultiLine" Columns="60" Rows="8" runat="server" /> <ajaxToolkit:HtmlEditorExtender ID="HtmlEditorExtender1" TargetControlID="txtComments" runat="server" > </div> </form> </body> </html>