How do I use collections in C#?

How do I use collections in C#?

In C#, collections are used to store groups of related objects. You can use various types like List, Dictionary, and HashSet.

Can you give me an example of using a List?

Sure! You can create a List like this: List<string> names = new List<string>(); Then, you can add items using names.Add("Alice");.

What about a Dictionary?

A Dictionary stores key-value pairs. You can create one like this: Dictionary<int, string> students = new Dictionary<int, string>(); and add items using students.Add(1, "John");.

Are there any performance considerations I should be aware of?

Yes, different collections have different performance characteristics. For example, Lists are great for indexed access, while Dictionaries are faster for lookups.