C# Dictionary Function Explained

In C#, a Dictionary is a collection of key-value pairs used to store and manipulate key-value data, offering fast operations for finding, inserting, and deleting.

The purpose of a dictionary is to access and manipulate values through keys. Each key must be unique, while values can be repeated. It is similar to a real-life dictionary, where keys are words and values are their corresponding definitions.

Dictionaries are commonly used in situations where quick access to and retrieval of data is needed, such as looking up a student’s grades based on their ID or finding detailed information about an employee based on their staff number. They employ efficient hashing algorithms to ensure fast search performance.

Additionally, Dictionary provides a variety of methods and properties such as adding key-value pairs, deleting key-value pairs, modifying values, and determining if a specified key is contained. It is one of the commonly used data structures in C# and can play an important role in various application scenarios.