[.Net] - 生成短 Guid 标识符的方法

private string GenerateId()
{
    long i = 1;
    foreach (byte b in Guid.NewGuid().ToByteArray())
    {
        i *= ((int)b + 1);
    }
    return string.Format("{0:x}", i - DateTime.Now.Ticks);
}

private long GenerateId()
{
    byte[] buffer = Guid.NewGuid().ToByteArray();
    return BitConverter.ToInt64(buffer, 0);
}