public static IHtmlContent AddAttribute(this IHtmlContent htmlContent, string name, string value = null)
{
IHtmlParser parser = new HtmlParser();
IHtmlBuilder builder = new HtmlBuilder();
string html = String.Empty;
using (var writer = new System.IO.StringWriter())
{
htmlContent.WriteTo(writer, HtmlEncoder.Default);
html = writer.ToString();
}
IHtmlElement element = parser.ParseString(html).FirstOrDefault();
element.AddAttributeValue(name, value);
return(builder.CreateHtmlContent(element));
}
