AngleSharp by Florian Rappl

<PackageReference Include="AngleSharp" Version="0.6.0" />

.NET API 844,288 bytes

HTMLOptGroupElement

sealed class HTMLOptGroupElement : HTMLElement, ISelectScopeElement, IImpliedEnd, IImplClosed, IHtmlOptionsGroupElement, IHtmlElement, IElement, INode, IEventTarget, IParentNode, IChildNode, IElementCssInlineStyle

Represents the HTML optgroup element.

public bool IsDisabled { get; set; }

Gets or sets if the optgroup is enabled or disabled.

public string Label { get; set; }

Gets or sets the label.