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14 May 2025

Paweł Filipek

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Author: Paweł Filipek

Frontend / JQuery

Freeze table columns – DataTables

16 March 201717 September 2017 - by Paweł Filipek - Leave a Comment

Fixed table Today I’ll show you how can you freez table columns/rows on website in simple way. The best for it will be another great and powerful tool plug-in for …

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Get noticed / Get out from smog

“Get out from smog” – parsing JSON

11 March 201717 September 2017 - by Paweł Filipek - Leave a Comment

“Get out from smog” part II Today I will focus on parsing data from JSON. Service http://powietrze.gios.gov.pl provides information on air quality in this format. So I would use this …

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Frontend / JQuery

Dynamic charts in MVC

10 March 201717 September 2017 - by Paweł Filipek - Leave a Comment

Dynamic charts When we need to display some charts, we might use simple and fast library – HighCharts.Which I’ll try to explain brefly below. Example In our example we display …

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Backend / C#

Parse xml – Linq to Xml

4 March 201717 September 2017 - by Paweł Filipek - Leave a Comment

How to parse xml? It’s very simple. Linq offers us an extension specifically for this task – Linq to XML. Let’s assume that we have to parse XML which is …

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Get noticed / Get out from smog

“Get out from smog” – DSP

1 March 20171 March 2017 - by Paweł Filipek - 1 Comment

Get noticed I decided to join to the contest “Daj się poznać” (Get Noticed) and I am very happy with it. The truth by saying I don’t have very much …

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Design pattern / Software Design Patterns

Command pattern

3 December 201631 March 2019 - by Paweł Filipek - 1 Comment

Command pattern Another design pattern it is very popular.I’s used inter alia in approach CQRS (for more information about CQRS). What is command pattern and when to use it: Sometimes, …

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Design pattern / Software Design Patterns

Observer pattern

29 November 201631 March 2019 - by Paweł Filipek - Leave a Comment

Observer pattern Today, I will try to present a observer pattern.It is part of behavioral patterns and is relatively simple so I think it’s worth it to present. Subject – the object of …

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State pattern
Design pattern / Software Design Patterns

State pattern

17 November 201631 March 2019 - by Paweł Filipek - 1 Comment

State pattern Design pattern, which aims to facilitate the extension of the building of the new states. With the change of state is changing the behavior of object. States are …

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Design pattern / Software Design Patterns

Composite pattern

12 November 201631 March 2019 - by Paweł Filipek - 2 Comments.

Composite is a structural design patterns. Via wikipedia: The composite pattern describes that a group of objects is to be treated in the same way as a single instance of …

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Backend / C# / Tools

Simple Data – Example with compare

30 October 201617 September 2017 - by Paweł Filipek - 3 Comments.

Simple Data Simple.Data is dynamic ORM. But What mean ORM : O – object, R – Relational, M – Mapping. But if simple data is dynamic we haven’t objects, relationals, mapping. So …

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Backend / C# / Design pattern / TDD

Refactoring with TDD – “Currency example”

16 October 201631 March 2019 - by Paweł Filipek - 1 Comment

Today, I’ll show a program based on a TDD approach which I explained in a previous article. At the beginning it will have two classes representing two currencies “złoty” and “euro”. I’ll test …

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Backend / C# / Design pattern / TDD

TDD – Become a “better” programmer

1 October 201631 March 2019 - by Paweł Filipek - 1 Comment

TDD Test-Driven Development is not just for testing. TDD is a technique for programming. TDD philosophy is based on the writing of code in the first place before production code. …

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Backend / C# / Tools

Loading data from excel and display them with Paged List MVC

18 September 201617 September 2017 - by Paweł Filipek - Leave a Comment

Today’s post will be different because it will be in English language. I’ll write a simple application MVC with data import from excel and displey them on the page(View) with …

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Backend / C# / Tools

Wstrzykiwanie zależności i kontener Windsor Castle

28 August 201617 September 2017 - by Paweł Filipek - 1 Comment

Wstrzykiwanie zależności i biblioteka Windsor Castle. Dzięki zastosowaniu tych dwóch rzeczy możemy naszą aplikacje przekształcić w kod prosty i zrozumiały poprzez zależności. Dodatkowo przy zastosowaniu kontenerów (Windsor Castle) dostajemy gotowy …

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Backend / C#

Co nowego w ASP.NET MVC Core

20 August 201617 September 2017 - by Paweł Filipek - Leave a Comment

ASP.NET MVC Core Microsoft zrobił ogromny krok naprzód tworząc ASP.NET MVC Core. Aplikacje napisane w MVC można hostować i pisać nie tylko na systemie Windows ale i na Linuxie i …

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Backend / C# / Tools

Automapper – przepisywanie danych

12 August 201617 September 2017 - by Paweł Filipek - 3 Comments.

Automapper – dlaczego i kiedy stosować tę bibliotekę? Automapper jest bardzo interesującą biblioteką. Może ona służyć do “przepisywania” danych (object-object). Warto skorzystać z niej jeżeli potrzebujemy przenieść dane np. z …

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Backend / Security

Transakcje – bezpieczny zapis do bazy danych

5 August 201617 September 2017 - by Paweł Filipek - Leave a Comment

Transakcje Transakcja jest zakresem w którym znajdują się polecenia związane z operacjami na bazie danych. Jeżeli operacje są wykonane prawidłowo to zostaną zapisane – w przeciwnym wypadku polecenia zostają cofnięte. …

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Backend / Entity Framework

Implementacja podejścia Code First

1 August 201617 September 2017 - by Paweł Filipek - Leave a Comment

Entity Framework posiada trzy podejścia tworzenia i dołączanie bazy danych Code First, Model First i Database First. W tym wpisie poświęcę czas opisowi i implementacji pierwszemu z nich. W Code …

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Backend / Entity Framework

Lazy loading vs eager loading – Entity Framework

28 July 201617 September 2017 - by Paweł Filipek - 2 Comments.

Entity Framework jest jedną z platform ORM, która pozwala na współpracę pomiędzy bazą danych a obiektowym językiem programowania. Dane które są pobierane za pośrednictwem EF są podzielone na dwa tryby: …

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