I have around 10 years of experience in .NET development.

I was interviewed for a senior .NET developer position.

There were two rounds. I cleared the first round. After the second round, I did not get any response.

The interview was medium.

Round 1

1. Delegates are immutable?
2. Difference between Thread and Task.
3. Multicast delegates.
4. Events are thread-safe?
5. Which collection will you use if you want to save unique elements?
6. How does HashSet check uniqueness of elements?
7. IDisposable implementation.
8. Array vs. List.
9. Which panel will you use when you want to place your elements diagonally?
10. Explain ICommand and also explain CanExecuteChanged.
11. Have you worked on scenarios where the UI is getting updated frequently from different sources?

Second Round

1. Implement the publisher-subscriber model without delegates or events.
2. Time complexity if you are accessing elements in an array and a list.
3. What is the use of finally?
4. Have you implemented IEnumerable?
5. Thread-safe Singleton.