using System;

using System.Linq;

using HtmlAgilityPack;

public class Program

{

    public static void Main()

    {

        var html = "<inline_tag><inline_tag/>123</inline_tag>";

        var htmlDoc = new HtmlDocument { OptionAutoCloseOnEnd = false };

        htmlDoc.LoadHtml(html);

​

        PrintDetails(htmlDoc, "// expected 2 errors to be reported because 2 tags were unclosed (h1 and b)");

    }

​

    private static void PrintDetails(HtmlDocument htmlDoc, string expectedErrors) {

        var errs = htmlDoc.ParseErrors;

        Console.Write("error count: " + errs.Count());

        Console.WriteLine("  " + expectedErrors);

        if (errs.Any()) {

            Console.WriteLine(string.Join('\n', errs.Select(e => string.Format("{0}, {1}:{2}: {3}", e.Code, e.Line, e.LinePosition, e.Reason))));

        }

​

        Console.WriteLine("\nParsedText:\n" + htmlDoc.ParsedText);

        Console.WriteLine("\nInnerHTML:\n" + htmlDoc.DocumentNode.InnerHtml.ToString());

        Console.WriteLine("\nOuterHtml:\n" + htmlDoc.DocumentNode.OuterHtml.ToString());

        Console.WriteLine(new String('_', 50) + new String('\n', 3));

    }

}