C# Dictionary – How to Use a Dictionary in C# [With Examples]

A Dictionary in C# is a collection that stores a set of keys and values, similar to a Hashtable. Dictionaries are useful for storing data that needs to be quickly retrieved using a key.

  • In C#, a Dictionary<TKey, TValue> is a generic collection that stores key/value pairs data organized by the unique key.
  • In C#, the Dictionary class is part of the System.Collections.Generic namespace. It is a dynamic collection that can be resized on-the-fly, allowing you to add or remove items as needed. It means that you don’t have to pre-define the size of the dictionary, and it can grow or shrink depending on the data being stored.
C# Dictionary
C# Dictionary