ParseRedisHexData.cs

using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Globalization;

public static byte[] ParseRedisHexData(string hexData)
{
	var bytes = hexData.Split("\\x", StringSplitOptions.RemoveEmptyEntries)
		.SelectMany(ParseRedisHexSegment)
		.ToArray();
	return bytes;

	IEnumerable<byte> ParseRedisHexSegment(string segment)
	{
		if (segment.Length < 2) throw new System.ArgumentOutOfRangeException(segment);

		yield return byte.Parse(segment[..2], NumberStyles.HexNumber);

		if (segment.Length > 2)
		{
			foreach (var c in segment[2..]) yield return (byte)c;
		}
	}
}