How to remove comments from Html using html agility pack ,C# Dot Net

Description: To Remove unwanted comments, we need to search them using HtmlAgility Filter (function: comment();) and then need to use remove function of node to delete them.

Customized method to delete all comment tags in html document except DOCTYPE comment is as given below.

objHTMLdoc => is HtmlDocument object created using HTMLAgilityPack

public static HtmlDocument RemoveComments(HtmlDocument objHTMLdoc)

        {

            var nodes = objHTMLdoc.DocumentNode.SelectNodes("//comment()");

            if (nodes != null)

            {

                foreach (HtmlNode comment in nodes)

                {

                    if (!comment.InnerText.ToUpper().StartsWith("<!DOCTYPE"))

                        comment.ParentNode.RemoveChild(comment);

                }

            }

            return objHTMLdoc;

        }