Telerik Controls not working after Overriding Page Render

[Krishna]

Yesterday I was doing something and found this unexpected behavior with the Telerik controls as soon as override the page render. I see the grids sorting and telerik ajax not working when I have coded the following code.
I would really appreciate if any one has clue why this is happening for the following code snippet.

  protected override void Render(HtmlTextWriter writer)
{
    // setup a TextWriter to capture the markup
    TextWriter tw = new StringWriter();
    HtmlTextWriter htw = new HtmlTextWriter(tw);
    // render the markup into our surrogate TextWriter
    base.Render(htw);
    // get the captured markup as a string
    string pageSource = tw.ToString();
    MatchCollection matches = Regex.Matches(pageSource, @"\[\!\[(.*?)\]\!\]");
    List<string> finishedCaptures = new List<string>();
    // Use foreach loop.
    foreach (Match match in matches)
    {
        foreach (Capture capture in match.Captures)
        {
            if (!finishedCaptures.Contains(capture.Value))
            {
                pageSource = pageSource.Replace(capture.Value, ConfigFactory.Instance[capture.Value.Trim(new char[] { '[', ']', '!' })]);
                finishedCaptures.Add(capture.Value);
            }
        }
    }
    writer.Write(pageSource);
}

-Thanks for your precious time.

[Slav]

Hi Krishna,

The code snippet you posted appears to be correct and it should not affect RadControls for ASP.NET AJAX on the page. Please send a simple, fully runnable project that isolates the issue so that we can inspect it locally and provide a more to the point answer.

Regards,
Slav
the Telerik team