C# has a lot of inbuilt Data Structures. Here are two of them −
Generic List<T> is a generic collection and the ArrayList is a non-generic collection. The size can be dynamicallyincreased using List, unlike Arrays.
Let us see an example.
We have set the List first −
List<string> myList = new List<string>()
It represents ordered collection of an object that can be indexed individually.
Set an ArrayList as −
ArrayList arr = new ArrayList(); arr.Add(67); arr.Add(34); arr.Add(99); arr.Add(45);