public static IHtmlString ContextInfo(TextWriter writer)
{
var res = new StringBuilder();
res.AppendLine("<pre style='margin:10px'>");
res.AppendLine("TextWriter");
res.AppendLine("Type: {0}", writer.GetType().Name);
res.AppendLine("TextWriter.GetHashCode:{0}", writer.GetHashCode());
res.AppendLine("TextWriter.ToString:{0}", writer.ToString());
res.AppendLine("</pre>");
return new MvcHtmlString(res.ToString());
}