AngleSharp by Florian Rappl

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

.NET API 451,072 bytes

 HTMLFrameSetElement

public sealed class HTMLFrameSetElement : HTMLElement
Represents the HTML frameset element.
public uint Cols { get; set; }

Gets or sets the number of columns of frames in the frameset. .

public uint Rows { get; set; }

Gets or sets the number of rows of frames in the frameset.