AngleSharp by Florian Rappl

<PackageReference Include="AngleSharp" Version="0.8.1" />

.NET API 1,172,480 bytes

 HtmlDetailsElement

Represents the HTML details element.
using AngleSharp.Dom.Css; using AngleSharp.Html; namespace AngleSharp.Dom.Html { internal sealed class HtmlDetailsElement : HtmlElement, IHtmlDetailsElement, IHtmlElement, IElement, INode, IEventTarget, IParentNode, IChildNode, INonDocumentTypeChildNode, IElementCssInlineStyle { public bool IsOpen { get { return GetAttribute(AttributeNames.Open) != null; } set { SetAttribute(AttributeNames.Open, value ? string.Empty : null); } } public HtmlDetailsElement(Document owner) : base(owner, Tags.Details, NodeFlags.Special) { } } }