AngleSharp by Florian Rappl

<PackageReference Include="AngleSharp" Version="0.2.5" />

 Comment

public sealed class Comment : CharacterData
Represents a node that contains a comment.
namespace AngleSharp.DOM { public sealed class Comment : CharacterData { internal Comment() { _type = NodeType.Comment; _name = "#comment"; } internal Comment(string data) : this() { AppendData(data); } public override Node CloneNode(bool deep = true) { Comment comment = new Comment(base.Data); Node.CopyProperties(this, comment, deep); return comment; } public override string ToHtml() { return "<!--" + base.Data + "-->"; } public override string ToString() { return "//" + base.Data; } } }