What are the differences between List, Array, and Dictionary in C#?

What are the differences between List, Array, and Dictionary in C#?

In C#, a List is a dynamic collection that can grow and shrink, an Array is a fixed-size collection, and a Dictionary is a key-value pair collection. Would you like to know more about their specific use cases?

Yes, can you explain when to use each type?

Sure! Use an Array when you know the size in advance and need fast access. Use a List for dynamic collections where size may change. Use a Dictionary when you need to associate keys with values for quick lookups.

What are the performance differences between them?

Arrays have the best performance for fixed-size collections. Lists have slightly more overhead due to dynamic resizing, while Dictionaries have additional overhead for managing keys but offer fast lookups.

Can you give examples of when to use a Dictionary?

Absolutely! Use a Dictionary when you need to store user profiles with unique usernames as keys or when mapping product IDs to product details.