using System;

public class Program

{

    public static void Main()

    {

        Guid g =  ToSeqGuid();

        for (int d = 1; d< 25; d++)

        {

        Console.WriteLine(g.ToString());

            System.Threading.Thread.Sleep(1);

            g =  ToSeqGuid();

            System.Threading.Thread.Sleep(2);

        }

    }

    public static  Guid ToSeqGuid()

    {

        Int64 lastTicks = -1;

        long ticks = System.DateTime.UtcNow.Ticks;

        if (ticks <= lastTicks)

        {

            ticks = lastTicks + 1;

        }

​

        lastTicks = ticks;

​

        byte[] ticksBytes = BitConverter.GetBytes(ticks);

​

        Array.Reverse(ticksBytes);

​

        Guid myGuid = new Guid();

        byte[] guidBytes = myGuid.ToByteArray();

​

        Array.Copy(ticksBytes, 0, guidBytes, 10, 6);

        Array.Copy(ticksBytes, 6, guidBytes, 8, 2);

​

        Guid newGuid = new Guid(guidBytes);

        string strG = newGuid.ToString();

        strG = strG.Replace("00000000",DateTime.Now.ToString("yyyyMMdd").ToString()   );

        //Console.WriteLine(int.Parse(DateTime.Now.ToString("yyyyMMdd")).ToString());

        //Guid newGuid2 = Guid.Parse(strG);

        newGuid = Guid.Parse(strG);

/*

        string filepath = @"C:\temp\TheNewGuids.txt";

        using (StreamWriter writer = new StreamWriter(filepath, true))

        {

            writer.WriteLine("GUID Created =  " + newGuid.ToString());

        }

*/ 

        return newGuid;

    }

    private Guid GenerateComb()

{

    byte[] guidArray = Guid.NewGuid().ToByteArray();

​

    DateTime baseDate = new DateTime(1900, 1, 1);

    DateTime now = DateTime.Now;

​

    // Get the days and milliseconds which will be used to build the byte string 

    TimeSpan days = new TimeSpan(now.Ticks - baseDate.Ticks);

    TimeSpan msecs = now.TimeOfDay;

​

    // Convert to a byte array 

    // Note that SQL Server is accurate to 1/300th of a millisecond so we divide by 3.333333 

    byte[] daysArray = BitConverter.GetBytes(days.Days);

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

​

    // Reverse the bytes to match SQL Servers ordering 

    Array.Reverse(daysArray);

    Array.Reverse(msecsArray);

​

    // Copy the bytes into the guid 

    Array.Copy(daysArray, daysArray.Length - 2, guidArray, guidArray.Length - 6, 2);

    Array.Copy(msecsArray, msecsArray.Length - 4, guidArray, guidArray.Length - 4, 4);

​

    return new Guid(guidArray);

}

​

}