c# hex dump that formats bytes like many common hex viewers

hexdump.cs

static void DumpHex(byte[] data, int bytesPerLine = 16)
{
    if (data == null) throw new ArgumentNullException(nameof(data));

    var sb = new StringBuilder();
    for (int offset = 0; offset < data.Length; offset += bytesPerLine)
    {
        sb.Clear();
        sb.AppendFormat("{0:X8}  ", offset);

        for (int i = 0; i < bytesPerLine; i++)
        {
            if (offset + i < data.Length) sb.AppendFormat("{0:X2} ", data[offset + i]);
            else sb.Append("   ");

            if ((i + 1) % 4 == 0) sb.Append(" ");
        }

        for (int i = 0; i < bytesPerLine; i++)
            sb.Append(offset + i < data.Length && data[offset + i] >= 32 && data[offset + i] <= 126
                ? (char)data[offset + i]
                : '.');

        Console.WriteLine(sb);
    }
}