<PackageReference Include="System.Drawing.Common" Version="11.0.0-preview.1.26104.118" />

System.Drawing.CharacterRange

public struct CharacterRange
Specifies a range of character positions within a string.
namespace System.Drawing { public struct CharacterRange { public int First { get; set; } public int Length { get; set; } public CharacterRange(int First, int Length); public static bool operator ==(CharacterRange cr1, CharacterRange cr2); public static bool operator !=(CharacterRange cr1, CharacterRange cr2); } }