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Marcin Kasprzykowski`s blog
ABSTRACT This article shows that adding a TOP clause to the SQL SELECT query may greatly increase its execution time. It also shows very effective solution to fix this problem. INTRODUCTION Lately I was conducting performance tests for a new project. I built sample database, filled it with data and began testing. The database schema is not important ......

At least seemingly.

Lately I stumbled across strange WPF behavior. I wanted to catch F10 keydown event. As it turned out it is not so obvious task.

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I have just published article about interesting way of decoratning generated classes with attributes. Here is a direct link: DIRECT LINK



Recently I had some troubles with relatively simple scenario: applying custom font to TextBlock in my WPF application. As it turned out the case is not so trivial. I published an article that I hope will help you in such situations. Direct link is here: [DIRECT LINK] ......

I finally managed to publish a detailed tutorial about LINQ`s GroupJoin method which I promised long ago. Sorry for being so late It is available here [DIRECT LINK] ......

It has been a while since I published my last article on my blog. Now I`m back hoping to deliver you interesting stuff about advanced methods in LINQ. First article describes the most complex overload of GroupBy method in little details and is available here [DIRECT LINK]. The second one - which will be published soon - shall describe GroupJoin method ......

Expression trees was the last feature of C# 3.0 that I didn`t feel comfortable about. So I got to the bottom of them and prepared concise article for everyone interested in this topic. Comments are appreciated! Here`s direct link: DIRECT LINK

I have just passed another Microsoft exam - this time it was related to the technology I truly love - WPF It was 070-502 (Microsoft Certified Technology Specialist: .NET Framework 3.5 WPF Applications). 51 questions and 2,5h time for all of them. Quite demanding compared to other exams I have taken. I was preparing for this exam mainly with the book ......

Lately during development I have encountered a problem while operating on collections using anonymous types, LINQ and lambda expressions. The solution turned out to be quite simple and short, yet very usefull. Short article presenting this problem as well as its solution is available in articles section. Here`s direct link: DIRECT LINK ......

New article regarding covariance, contravariance and invariance in C# language has just been posted in C# category [click here for direct link]. Comments are welcome!

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