Lists in

About Lists

Lists in C# are collections of primitive values or instances of structs or classes. They are implemented in the base class library as List<T> where T is the type of the item in the list. The API exposes a rich set of methods for creating and manipulating lists.

var listOfStrings = new List<string>();
var listOfIntegers = new List<int>();
var listOfRandoms = new List<Random>();
var listOfBigIntegers = new List<BigInteger>();

A collection definition typically includes a place holder in angle brackets, often T by convention. This allows the collection user to specify what type of items to store in the collection.

Unlike arrays, lists can resize themselves dynamically.

LINQ

Although the built-in API of List<T> is rich (including mappings and filters such as ConvertAll, FindAll and Foreach) and its looping syntax is very clear, and you definitely need to be familiar with this API, Language Integrated Query (LINQ) is available for many tasks, is even more powerful and widely used and has the advantage of providing a consistent interface across library collections, third-party collections and your own classes.