using System;

using System.Linq;

using System.Threading.Tasks;

using AngleSharp;

​

public class Program

{

    public static void Main()

    {

        Task.Run(async () =>

        {

            //Create a new context for evaluating webpages with the default configuration

            var context = BrowsingContext.New(Configuration.Default);

            //Parse the document from the content of a response to a virtual request

            var document = await context.OpenAsync(req => req.Content("<table><tr><td>cell</td></tr><!--<tr><td>comment</td></tr>--></table>"));

            // query all tr

            var rows = document.QuerySelectorAll("tr");

            Console.WriteLine(rows.Count());

        }

​

        ).GetAwaiter().GetResult();

    }

}