Pre-defined generic classes in C#

C# comes with a whole bunch of pre-defined generic classes which you can use as per your project needs. You will find all important pre-defined generic classes under the namespace System.Collections.Generics . The most important and common generic classes which you will need in your projects are

  1. List
  2. Dictionary
  3. Stack

List<T> is a generic class used to creating a collection of object.
Dictionary<Key,Value> is a generic class used to create an indexed collection of objects. Each of the object has a unique key. In a dictionary you cannot assign a duplicate key to a records but a duplicate value can be inserted.
Stack<T> is a generic class to create a stack of any type of objects you want.

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