C#根据时间产生有序的GUID编码

public static Guid GenerateGuid()
{
    byte[] guidArray = Guid.NewGuid().ToByteArray();

    var baseDate = new DateTime(, , );
    DateTime now = DateTime.Now;
    var days = new TimeSpan(now.Ticks - baseDate.Ticks);
    TimeSpan msecs = now.TimeOfDay;

    byte[] daysArray = BitConverter.GetBytes(days.Days);
    byte[] msecsArray = BitConverter.GetBytes((long)(msecs.TotalMilliseconds / 3.333333));

    Array.Reverse(daysArray);
    Array.Reverse(msecsArray);

    Array.Copy(daysArray,daysArray.Length - ,guidArray,guidArray.Length - ,);
    Array.Copy(msecsArray,msecsArray.Length - ,guidArray,guidArray.Length - ,);

    return new Guid(guidArray);
}

public static Guid GenerateGuid()
{
    byte[] guidArray = Guid.NewGuid().ToByteArray();

    var baseDate = new DateTime(, , );
    DateTime now = DateTime.Now;
    var days = new TimeSpan(now.Ticks - baseDate.Ticks);
    TimeSpan msecs = now.TimeOfDay;

    byte[] daysArray = BitConverter.GetBytes(days.Days);
    byte[] msecsArray = BitConverter.GetBytes((long)(msecs.TotalMilliseconds / 3.333333));

    Array.Reverse(daysArray);
    Array.Reverse(msecsArray);

    Array.Copy(daysArray,daysArray.Length - ,guidArray,guidArray.Length - ,);
    Array.Copy(msecsArray,msecsArray.Length - ,guidArray,guidArray.Length - ,);

    return new Guid(guidArray);
}