how to convert ulong to rowversion

reference to converting sql server rowversion to long or ulong? i can convert SQL RowVersion to ulong by code:

static ulong BigEndianToUInt64(byte[] bigEndianBinary)
{
    return ((ulong)bigEndianBinary[0] << 56) |
           ((ulong)bigEndianBinary[1] << 48) |
           ((ulong)bigEndianBinary[2] << 40) |
           ((ulong)bigEndianBinary[3] << 32) |
           ((ulong)bigEndianBinary[4] << 24) |
           ((ulong)bigEndianBinary[5] << 16) |
           ((ulong)bigEndianBinary[6] <<  8) |
                   bigEndianBinary[7];
}

Now, I am faced with a problem, how to convert ulong to byte [8]? I save the value of rowversion to a file, then read it and use it to make the query. the query parameter should be byte[] , not ulong . otherwise , there is an error will be raised.

Answer

i got an answer from BigEndian.GetBytes Method (Int64)

thanks all.

    public static byte[] GetBytes(this ulong value)
    {
        return new[]
        {
            (byte)(value >> 56),
            (byte)(value >> 48),
            (byte)(value >> 40),
            (byte)(value >> 32),
            (byte)(value >> 24),
            (byte)(value >> 16),
            (byte)(value >> 8),
            (byte)(value)
        };
    }