AngleSharp by Florian Rappl

<PackageReference Include="AngleSharp" Version="0.2.9" />

.NET API 451,072 bytes

 HTMLFormControlElementWithState

public abstract class HTMLFormControlElementWithState : HTMLFormControlElement
Represents the base class for all HTML form controls that contain a state.
public bool CanContainRangeEndpoint { get; }

Gets the status if the element can contain a range endpoint.

public bool ShouldSaveAndRestoreFormControlState { get; }

Gets the status if the element should save and restore the control state.

public void RestoreFormControlState(FormControlState state)

Resets the form control state to the given state.

public FormControlState SaveControlState()

This method is not implemented yet.