Eliminar el VIEWSTATE en C#

protected override void Render(HtmlTextWriter writer)
{
System.IO.StringWriter stringWriter = new System.IO.StringWriter();
HtmlTextWriter htmlWriter = new HtmlTextWriter(stringWriter);
base.Render(htmlWriter);
string html = stringWriter.ToString();
int endPoint;
int startPoint = html.IndexOf(”<input type=\”hidden\” name=\”__VIEWSTATE\”");
if (startPoint >= 0)
{
endPoint = html.IndexOf(”/>”, startPoint) + 2;
html = html.Remove(startPoint, endPoint - startPoint);
}
writer.Write(html);
}

No es muy elegante pero funciona