Ruslan Trifonov's blog

Then you definitely have to check out the Decentralized Software Services(DSS) and Concurrency and Coordination Runtime(CCR), which are currently part of the Microsoft Robotics Studio
It is even more interesting: The DSS/CCR based services in a Windows Mobile box. You may use .NET Compact Framework to create these services and run them on the mobile side.

NOTE:
Are you going to attend at the Microsoft Days 2007 in Sofia on 11 and 12 10 and 11 May 2007? Than you may check out my session about Microsoft Robotic Studio, where we'll talk about these impressive technologies.

Links:
Marc Jacobs's Blog
Microsoft Robotics Studio
The Most Revolutionary Microsoft Technology You’ve Never Heard Of

I just came from the local round of Imagine Cup Bulgaria 07
I was part of the jury and spent almost the whole day listening and watching the presenting teams.
Despite of my expectations it was fun for me. I'm happy that I had the chance to watch these young motivated and smart people talking about their solutions.

There were great and not so great presentations and we(the jury) had to pick up the best one - the one to present Bulgaria on the finals in Seoul,Korea.

I've experienced a WOW! feeling, when BrainStorm(the winning team) presented their solution and as it turned out I wasn't alone - they won :)
So guys, good luck in Seoul!

NOTE:
Actually, some of the other teams demonstrated interesting ideas and even remarkable technological solutions. Unfortunately, they missed to meet some of the basic requirements of the contest. Some of the teams even failed to provide a live demo during their sessions - we had to guess if they could eventually implement their ideas. Following some pictures:

We had our regular monthly meeting again as announced before.
Rosen Zhivkov told us the whole story about InfoPath2007, SharePoint Services and Forms Server.
We used the food and drinks supplied by Microsoft for a while and then moved to get some beers and pizza in a local pub.
Check out the photos:

Imagine a world where technology enables a better education for all...

The local round from Imagine Cup 07 will be held tomorrow.
A several teams (students) will participate in a contest presenting their software solutions in front of a jury.
The event will take place in the Education Center Elieff on 26.Apr.2007 at 9:30h and may be viewed on-line.
The winner will present Bulgaria in Korea at the Imagine Cup finals.

Meet you there!

We will have our regular monthly meeting on 25.Apr.2007 at the local Microsoft office
Check out the official announcement here.
Rosen Zhivkov will present "InfoPath 2007 and Forms Server".
He will talk about using InfoPath 2007 and Forms Server with SharePoint,SharePoint 2007 Workflow , BizTalk , WinForms and more...

This will be an interesting talk, so be there!

If you'd like to attend to our meetings go and regitster on the Sofia.NET User group web site

Are you using SQLite?

SQLite is a small C library that implements a self-contained, embeddable, zero-configuration SQL database engine.

[SQLiteFunction(Name="CYR_UPPER",Arguments=1,FuncTyp=FunctionType.Scalar)]
public class SqLiteCyrHelper:SQLiteFunction
{
  public override object Invoke(object[] args)
  { 
     return args[0]!=null?((string)args[0]).ToUpper():null;
  }
}

Then you may use it in the following way:

SELECT * FROM my_cyr_table WHERE cyr_upper(cyr_column) = @cyr_string

This all comes with a performance cost, however it is a very powerful way to enhance the database experience.

SQLite supports custom aggregates , collate and scalar function and the sqlite.phxsoftware.com implementation allows these function to be written in managed code.

UPDATE:
Do not forget to register the function on application startup:

SqLiteCyrHelper.RegisterFunction(typeof(SqLiteCyrHelper));

Links:

Managed SQLite Provider (.NET & compact Framework)

SQLite.org - the offical SQLite web site


Enjoy!

What do you use for thread synchronization - mutex or critical section?
Check out this blog post from Jeremy Cooke at the Windows CE Base Team Blog

In short:
Using a mutex is more expensive in terms of CPU utilization, but mutexes may be shared outside the processes boundaries.

In .NET CompactFramework terms
Critical section means using System.Threading.Monitor. For mutexes there is a class called System.Threading.Mutex.
The problem here is that there's no easy way to assign a name of the Mutex instance - the constructor with the name argument exists only in the Full .NET version.
Using the System.Threading.Mutex class from .NET Compact Framework will prevent you from creating system mutexes - e.g. you can't use the default managed mutex behind the process boundaries.
However there is an implementation from OpenNETCF.org called OpenNETCF.Threading.Mutex2 which may be used to create system-wide named mutex.

You may see other CF.NET inter-process-communication techniques here as well.

Links:
Jeremy Cooke about Mutex vs Critical Section
System.Threading.Monitor on MSDN
System.Threading.Mutex on MSDN
OpenNETCF.Threading.Mutex2 from OpenNETCF.org
Interprocess Communication with the .NET Compact Framework 1.0

Phone combines three amazing products — a revolutionary mobile phone, a widescreen iPod with touch controls, and a breakthrough Internet communications device with desktop-class email, web browsing, maps, and searching — into one small and lightweight handheld device.

Hey, I had all these features from my first Windows Mobile 2003!
May be the multi-touch display deserves credits (I hate the stylus stuff) , but let's wait the users to tell their words...

Check out the differences between Windows Mobile and this outstanding tech.toy :) iPhone vs Windows Mobile

Something strange about the Apple media presence:
- Apple released iPod
everybody says it was an outstanding innovation. as far as I know the PJB-100 is the first commercially sold portable player developed by Compac and marketed by HanGo Electronics Co., Ltd.

- Apple released
iPhone again a miracle , again an innovation as far as I know "some" of these features were on the market for quite some time :) Remember?The first idea for multi-touch display is not of Apple.. may be

- Microsoft released Vista
a lot of people claimed that MS stole this and that(search bar, gadgets, etc.). In other words Vista is not an innovation.

I'm starting to think that the only one innovation developed by Apple is a method to manipulate the media and public opinion .. may be Apple (not Edward Bernays) invented PR.

Anyway, the innovation in this business is not only about putting a single never-seen piece in the users' hands. It is more about getting a lot of new small precious pieces together and place it in the hands of the right user...