Mastering Collections in C#: Examples & Best Practices

Collection in C# with Example : In the world of C#, collections are indispensable tools for coping with and manipulating corporations of related gadgets. Whether you are a newbie or an experienced developer, know-how collections is crucial for writing efficient and maintainable code. In this comprehensive manual, we will delve into the world of collection in C#, protecting various sorts and how to use them efficiently with illustrative examples.

Introduction to Collection in c#

Collection in C# offer a way to save and manage companies of objects. They offer flexibility, overall performance, and ease of use in comparison to conventional arrays. C# gives numerous built-in collection types, every tailored to particular situations and requirements.

Types of Collection in C#

Arrays in c# : Arrays are the handiest form of series in C#. They offer fixed-length storage for factors of the identical kind. While arrays are green and straightforward, they lack flexibility in terms of length manipulation.

int[] numbers = new int[5]; // Declaration
numbers[0] = 10; // Initialization

Lists in c# : Lists are dynamic collections which can grow or reduce in length as wished. They provide the ability of arrays with additional functionalities like insertion, deletion, and sorting.

List<int> numbersList = new List<int>(); // Declaration
numbersList.Add(10); // Adding elements

Dictionaries in c# : Dictionaries keep key-value pairs, allowing speedy retrieval of values based on precise keys. They are suitable for scenarios wherein fast lookup is critical.

Dictionary<string, int> ages = new Dictionary<string, int>(); // Declaration
ages["John"] = 30; // Adding key-value pairs

Sets in c# : Sets represent a set of particular factors. They make sure that every detail happens best once, making them perfect for eventualities where area of expertise is critical.

HashSet<int> uniqueNumbers = new HashSet<int>(); // Declaration
uniqueNumbers.Add(10); // Adding unique elements

Creating and Using Collections

Let’s discover a way to create and use collection in C# with sensible examples:

Example 1: Working with Lists

List<string> fruits = new List<string>();
fruits.Add("Apple");
fruits.Add("Banana");
fruits.Add("Orange");

foreach (var fruit in fruits)
{
    Console.WriteLine(fruit);
}

Example 2: Utilizing Dictionaries for Data Storage

Dictionary<string, string> capitals = new Dictionary<string, string>();
capitals.Add("USA", "Washington D.C.");
capitals.Add("UK", "London");
capitals.Add("France", "Paris");

foreach (var country in capitals.Keys)
{
    Console.WriteLine($"Capital of {country}: {capitals[country]}");
}

Example 3: Leveraging Sets for Unique Values

HashSet<int> numbers = new HashSet<int>();
numbers.Add(10);
numbers.Add(20);
numbers.Add(10); // Duplicate value, ignored by HashSet

foreach (var number in numbers)
{
    Console.WriteLine(number);
}

Conclusion

Collections play a important role in C# programming, offering a wide range of alternatives for storing and manipulating statistics successfully. By know-how the special kinds of collections and the way to use them successfully, you may write cleaner, greater maintainable code. Experiment with the examples provided, and explore the tremendous opportunities that collections provide to your C# tasks.

Collection in C# with Example 2024