>>There is no newsequentialid in C# but I think I read about some implementations. Check this blog post
>>
>>http://blogs.msdn.com/b/dbrowne/archive/2012/07/03/how-to-generate-sequential-guids-for-sql-server-in-net.aspx
>>
>>David Browne is a great developer from MS and he is very helpful in MSDN forums. I also asked a few questions of him privately.
>
>Thanks, I'd found various implementations of this.

I would trust this one coming from MS developer.