<PackageReference Include="NETStandard.Library" Version="2.0.0-preview2-25401-01" />

System.Drawing.Size

public struct Size
namespace System.Drawing { public struct Size { public static readonly Size Empty; public int Height { get; set; } public bool IsEmpty { get; } public int Width { get; set; } public Size(Point pt); public Size(int width, int height); public static Size Add(Size sz1, Size sz2); public static Size Ceiling(SizeF value); public static Size operator +(Size sz1, Size sz2); public static bool operator ==(Size sz1, Size sz2); public static explicit operator Point(Size size); public static implicit operator SizeF(Size p); public static bool operator !=(Size sz1, Size sz2); public static Size operator -(Size sz1, Size sz2); public static Size Round(SizeF value); public static Size Subtract(Size sz1, Size sz2); public static Size Truncate(SizeF value); } }