public static void Main()
var html1 ="<body></body>";
var htmlDoc1 = new HtmlDocument();
htmlDoc1.LoadHtml(html1);
var html2 = "<div>Hi ZZZ Projects</div>";
var htmlDoc2 = new HtmlDocument();
htmlDoc2.LoadHtml(html2);
var body = htmlDoc1.DocumentNode.ChildNodes[0];
var div = htmlDoc2.DocumentNode.ChildNodes[0];
Console.WriteLine("Html Before: " + htmlDoc1.DocumentNode.InnerHtml);
Console.WriteLine("Html AFTER: " + htmlDoc1.DocumentNode.InnerHtml);