Today I would like to introduce you to the world of attributes that helps you skip some parts of code while debugging. Most of the C# programmers probably know them well, but I realized that only a few can tell the differences between them. So, ladies and gentlemen, let me introduce you the DebuggerStepThrough and DebuggerHidden.

Recently, I had quite an interesting discussion about var keyword in C#. Basically, my interlocutor tried to convince me that using var we drastically reduce code readability, so we should only use that together with anonymous types. He also mentioned performance and that some operations cannot be done using implicit typing. Well, if you’ve been reading my blog for some time, you’ve probably spotted that I’m a big fan of vars, and I put them every time it’s possible. B...

[DebuggerTypeProxy] is very useful attribute when you have a class that inherits from another class and that one inherits from another one, and some of the classes contain collections of items and hundreds of properties that in fact are not important to you… Strictly speaking, when displaying class’ members while debugging makes you feel like quitting the job. [b]We decide how to display object while debugging[/b] Exactly! You can set a proxy that will inform debugger how you want a type to be displayed...

Wpis o tym, jakie mamy modyfikatory dostępu i jak je olać ciepłym moczem;)

Chcemy rzucić wyjątkiem, gdy mamy przypadek nieobsłużony poprzez case’y. Na przykład gdy pojawiła się nowa wartość enuma Shape. throw EnumGuard.CreateMissingEnumException(nameof(shape), shape);

Najbardziej popularnym Value Object jest Money. W tym przykładzie instancje możemy tworzyć tylko poprzez metode Create() (taka fabryka). Konstruktor jest prywatny. Pewnie dla tego przykładu lepiej mieć po prostu publiczny konstruktor z dwoma parametrami, ale mam wiele przykładów innych bardziej skomplikowanych Value Objects, gdzie podejście z prywatnym konstruktorem i kilkoma fabrykami walidującymi różne przypadki ma sens.

A few days ago I watch a very interesting talk from NDC given by Jon Skeet, Kathleen Dollard and Rob Conery. Around 41:15 minute Kathleen said something very interesting about protected internal...

When I browse StackOverflow questions tagged with selenium label, a lot of them are related to the problem of clicking on page elements. It seems to be one of the most trivial tasks, but can cause a lot of problems. Very often invoking Click() action on webelement ends with exceptions (there is a wide range of them). The main reason is that element on which we try to click is not in “Interactable” state. There is a lot of different factors that can cause that situation:Element has zero dimension (width ...

C# Attributes are very popular for ‘decorating’ assembly with some additional data, usually influencing on the application’s behavior or the way data are managed. You probably already used at least some of them – Obsolete, Serializable, Required, Display, MaxLength, RegularExpression, WebMethod are only a few of hundreds available in .Net world. What is more, you can write your own custom attribute and use it like a build-in one. I will write more about this in the next post. Right now, let’s focus o...

Recently we added in-memory caching to Azure App. You can try it out now on iOS and Android! It turns out Mono doesn’t have System.Runtime.Caching namespace, which makes it easy to implement caching for .NET apps. We had to find another way...