C#

What are the main principles of object-oriented programming (OOP)?

Is it possible to use a string as an object for locking in a lock statement?

Are strings a value type or a reference type in C#?

What design patterns do you use in front-end and back-end development?

What is SignalR?

What does the using directive look like after compilation?

Could you give examples of the main data types widely used in programming?

Junior — Middle

Andersen

What is the difference between ref and out? What does the in parameter mean?

Is it possible to use the await operation inside a critical section protected by a lock?

Is SQL code already generated when calling the add method?

What are indexes in C#? What types of indexes exist and have you used them in practice?

What methods can be used to configure routing in a system?

Junior — Middle

Andersen

Do you have practical experience working with XML formats for structuring data?

What is REST?

What is method overloading in C#?

What is parallelism?

What is a Dictionary in C#?

What is the purpose of StringBuilder in C#?

How is error handling and exceptional situations managed in the code?

What is the get method in C#?