What are some examples of collections in C#?

What are some examples of collections in C#?

In C#, collections are used to store groups of related objects. Common examples include List, Dictionary, and HashSet.

Can you explain how a List works in C#?

Sure! A List in C# is a dynamic array that can grow and shrink in size. You can add, remove, and access elements using an index.

What about a Dictionary? How is it different from a List?

A Dictionary stores key-value pairs, allowing for fast lookups by key. Unlike a List, which is indexed by position, a Dictionary is indexed by unique keys.

Can you give me a code example of using a HashSet?

Certainly! Here's a simple example:

HashSet<string> fruits = new HashSet<string>();
fruits.Add("apple");
fruits.Add("banana");
fruits.Add("apple"); // This won't be added again