A static class is a class in which we can not create an instance or object of this class. Every member inside a static class must be static. Fields, properties, methods, even nested classes inside the outer class must be marked as static. For example, if we have a company…

In C#, an interface is a “blueprint” or a “to-do list” for a class or struct that defines a set of methods, properties, events, nested types, and indexers. You can think of an interface as a to-do list that specifies what a class needs to do, but not how to…

A “Singleton” is an object-oriented programming concept in C#. It is a design pattern that restricts creating classes in more than one instance. So, it is a design pattern of classes. This ensures that in every part of the C# program, there will be only one class in action to…

What is a “Field”? A field is a member variable that is declared within a class or struct and is used to hold data for an instance of a class/objects of a class. All non-static fields are called “instance fields”. …

Vorstellen “Ich bin Cem Tuğanlı. Ich bin sechsundzwanzig Jahre alt und komme aus der Türkei. Ich lebe in Istanbul, wohne in Üsküdar und studiere an der Universität Istanbul. Ich arbeite als Ingenieur. Ich besuche einen Deutschkurs, der mir gefällt. Ich spreche Türkisch, Englisch und ein bisschen Deutsch. Meine Hobbys sind Schach spielen und Bücher lesen. Ich liebe es, Musik zu hören und fernzusehen.”

1st Text: — Juliana kommt aus Paris. Das ist die Hauptstadt von Frankreich. In diesem Sommer macht sie einen Sprachkurs in Freiburg. Das ist eine Universitätsstadt im Süden von Deutschland. Es gefällt ihr hier sehr gut. Morgens um neun beginnt der Unterricht, um vierzehn Uhr ist er zu Ende. In ihrer Klasse sind…

1st Text: Well, last month, my friend Alfie and I had a crazy idea. We decided to cycle from the south of England to the north of Scotland, from Land’s End to John o’Groats. It’s an 874-mile trip! It takes ten to fourteen days. …

I live in a house near the mountains. I have two brothers and one sister, and I was born last. My father teaches mathematics, and my mother is a nurse at a big hospital. My brothers are very smart and work hard in school. My sister is a nervous girl…

I usually teach English at a language school in the summer. I often can’t enjoy the summer because I am so busy. So this summer, I’m not planning to work. Instead, I’m going to have a proper summer holiday. I’m going to buy a campervan and drive around Ireland. I’m…