HexDump.cs

public static string HexDump(byte[] bytes)
{
	using (var s = new MemoryStream(bytes))
		return HexDump(s);
}

public static string HexDump(Stream s)
{
	var result = new StringBuilder();
	var buf = new byte[16];
	var actual = s.Read(buf, 0, buf.Length);
	while (actual > 0)
	{
		var hex1 = BitConverter.ToString(buf, 0, Math.Min(8, actual)).Replace("-", " ");
		var hex2 = BitConverter.ToString(buf, 8, Math.Max(actual - 8, 0)).Replace("-", " ");
		var padding = new String(' ', (buf.Length-actual)*3);
		var ascii = Regex.Replace(Encoding.Default.GetString(buf, 0, actual), @"\p{Cc}", "·");
		result.AppendLine($"{s.Position - actual:X8}   {hex1}  {hex2}{padding}   {ascii}");
		
		actual = s.Read(buf, 0, buf.Length);
	}
	return result.ToString();
}