What's New in C# 12: A Practical Guide with Exercises

Name: What's New in C# 12: A Practical Guide with Exercises
Rating: 4.3 (130 reviews)

Learn about the new features in C# 12, through theoretical videos and practical exercises.

Created byHéctor Uriel Pérez

Last updated 11/2023

English

English [Auto],Turkish [Auto],

What you'll learn

What's new in C# 12
Motivations behind the new features
Scenarios for using the new features
Exercises to practice implementing the new features

Course content

4 sections • 23 lectures • 1h 39m total length

What are Primary Constructors1:54
Explore primary constructors in C# 12, adding parameters to class or struct declarations for internal use, with a record-like syntax, and guidelines that parameters are not properties unless exposed.
Primary Constructors - Before and after5:37
Explore primary constructors in C# 12 by creating a customer class with parameters in parentheses, and show how to initialize data and expose public properties.
Uses for dependency injection6:23
Demonstrates dependency injection with a translation service via a primary constructor, using a service collection to register a Google translation as a singleton.
Constructors and base class initialization4:00
Explore how primary constructors in C# 12 affect parameterless constructors, compare class vs struct behavior, and learn to initialize base constructors using this to enable parameterless instantiation.
Applying Primary Constructors in a project2:21
Solution to Primary Constructors exercise3:59
Apply primary constructors to simplify the book class and related models. Inject iBook service via constructors in the Books Controller and verify endpoints with Swagger.
Resources0:01

Motivation of the feature6:48
Explore the motivation behind C# 12 collection expressions, comparing array, list, span, stackalloc, and immutable array initializations, and learn how this feature simplifies and streamlines collection creation across languages.
Using Collection Expressions3:43
Discover how collection expressions simplify code by using brackets for arrays, lists, sets, and mutable arrays, while enforcing explicit data types and passing values to methods with enumerable inputs.
The Spread element2:25
Explore the spread element in C# 12, using a pair of dots to merge lists within a single collection expression and create cleaner, combined collections.
Collection Builder3:44
Explore collection builder in C# 12 by implementing a custom type that supports collection expressions through a static create method and a collection builder attribute, enabling seamless initialization.
Applying Collection Expressions in a project2:26
Practice implementing collection expressions in a hands-on project with a task repository and time calculator. Learn to add, remove, filter by category, concatenate tasks, and compute total durations.
Solution to the project implementation6:33
Demonstrates refactoring the todo item with a primary constructor and builds tasks with collection expressions, including the spread operator, to simplify repository code and total time calculations.
Resources0:01

Lambda optional parameters7:51
Array parameters for lambdas3:58
Discover how C# 12 lambda expressions can use a params array to pass multiple integers, and learn how collection expressions affect delegate compatibility across versions.
Practice Time4:00
Problem resolution3:52
Demonstrate problem resolution in a practical C# 12 exercise by using a default model parameter and a params array of IDs to generate image URLs with a lambda.
Resources0:01

Alias any type feature13:10
Explore the alias any type feature in C# 12, enabling aliases for namespaces, specific types, delegates, and tuples to simplify code.
Practice Time2:23
Explore aliasing in C# 12 by defining using aliases and global namespaces from Program.cs to simplify cross-module code, practicing with Person and Processor classes across modules.
Problem Resolution14:42
Learn to simplify complex C# 12 code by using primary constructors, global using aliases, and type aliases to streamline namespaces, tuples, and data types across modules, improving readability.
Resources0:01

Requirements

C# language basics

Description

Hello My name is Hector Perez, Be welcome to the course, "New features in C# 12, a practical guide". I am Microsoft MVP and software developer with more than 10 years of experience

C# is the powerful programming language created by Microsoft, placed among the most popular and used today

The reason, is that with C# you can create almost any type of application, from video games, to mobile applications, to web projects

With the release of a new version of .NET every year, new features are added to C#, making it an increasingly flexible and powerful language

In this course, you will learn about the main features of C# 12, the reason behind the incorporation of each of them into the language, as well as exercises that will allow you to get hands-on to practice what you have learned

At the end of the course, you will know what are the main new features of C# 12 and how to use them in your projects

Some of the topics that we will see in the course are:

Primary Constructors
Collection Expressions
Optional parameters for lambdas
Param array parameters for lambdas
Alias any type
Among other topics

To have a good use of the course, it is recommended to have basic knowledge of C#

What are you waiting for to update your C# knowledge? See you in the course

Who this course is for:

C# Developers
.NET Developers in General

What's New in C# 12: A Practical Guide with Exercises

What you'll learn

Explore related topics

Course content

Primary Constructors7 lectures • 24min

Collection Expressions7 lectures • 26min

Optional and parameter array parameters for lambdas5 lectures • 20min

Alias any type4 lectures • 30min

Requirements

Description

Who this course is for: