Home>Courses>Getting Started with LINQ in C#

Getting Started with LINQ in C#

Gain insights into LINQ in C#, learn about lambda expressions, explore common LINQ methods, avoid pitfalls, and refactor code to be more expressive and efficient.

Intermediate

44 Lessons

4h 20min

Certificate of Completion

Gain insights into LINQ in C#, learn about lambda expressions, explore common LINQ methods, avoid pitfalls, and refactor code to be more expressive and efficient.

AI-POWERED

Explanations

AI-POWERED

Explanations

This course includes

52 Playgrounds

Course Overview

What You'll Learn

Course Content

Course Overview

LINQ is the best feature in C#. If you’re interested in writing more expressive code to work with collections, this course is for you. In this course, you will learn about what LINQ is and what lambda expressions are. You will learn the most common LINQ methods and some common pitfalls to avoid when using LINQ. You will also write your first methods using LINQ and use LINQ to refactor some common constructs.

LINQ is the best feature in C#. If you’re interested in writing more expressive code to work with collections, this course is fo...Show More

What You'll Learn

Learn what LINQ is and what lambda expressions are.

Use the most common LINQ methods to work with lists and arrays.

Identify and fix some common pitfalls when using LINQ with lists and arrays.

Use LINQ to refactor conditionals.

Learn new LINQ methods and overloads in .NET 6.

Learn what LINQ is and what lambda expressions are.

Course Content

Getting Started

3 Lessons

Get familiar with LINQ's capabilities, declarative programming, and essential C# prerequisites.

Introduction

What Is LINQ?

LINQ and Declarative Programming

LINQ Method: Where

10 Lessons

Get started with filtering data using the LINQ Where method in C#.

LINQ and IEnumerable Type

What Are Extension Methods?

Quiz on Extension Methods

What Are Lambda Expressions?

Quiz on Lambda Expressions

How to Use the Where Method

Exercise: Find Your Favorite Movies

Exercise: Rewrite Our First Example Using Lambda Expressions

LINQ and Immutability

LINQ and Laziness

Common LINQ Methods

17 Lessons

Break apart common LINQ methods for efficient data transformation, evaluation, and manipulation.

The Select Method

Any and All Methods

Quiz on LINQ Methods

Exercise: Implement Your Own Any Method

GroupBy and OrderBy Methods

First and FirstOrDefault Methods

Take and Skip Methods

Exercise: Write a Pagination Method

Exercise: Refactor From Loops to LINQ

Sum, Min, and Max Methods

SelectMany Method

Aggregate Method

The Distinct Method

Intersect, Union, and Except Methods

Exercise: Implement the Exactly Method

Exercise: Use LINQ Methods

Exercise: Sort by Occurrences

Syntax & Pitfalls

3 Lessons

Grasp the fundamentals of LINQ syntax, common mistakes, and error-handling practices.

Query-like Syntax

Common Mistakes and What to Do

Exercise: Remove Mistakes

Refactor with LINQ

4 Lessons

Solve problems in refactoring code using LINQ methods to streamline checks and validations.

Replace Comparisons with Any

Replace a Set of Choices with FirstOrDefault

Validate Objects with All

Exercise: Add a Recommended Movie

What's New in LINQ?

6 Lessons

Focus on new LINQ methods, enhanced data handling, and streamlined collection manipulation.

LINQ and .NET 6

Chunk Method

DistinctBy Method

Take Method with Ranges

XOrDefault Methods with Defaults

Quiz on New LINQ Methods

Wrap-up!

1 Lessons

Build on LINQ's core concepts to simplify and enhance code readability in C#.

Conclusion

Course Author

Cesar Aguirre

Trusted by 2.6 million developers working at companies

"These are high-quality courses. Trust me. I own around 10 and the price is worth it for the content quality. EducativeInc came at the right time in my career. I'm understanding topics better than with any book or online video tutorial I've done. Truly made for developers. Thanks"

Anthony Walker

@_webarchitect_

"Just finished my first full #ML course: Machine learning for Software Engineers from Educative, Inc. ... Highly recommend!"

Evan Dunbar

ML Engineer

"You guys are the gold standard of crash-courses... Narrow enough that it doesn't need years of study or a full blown book to get the gist, but broad enough that an afternoon of Googling doesn't cut it."

Carlos Matias La Borde

Software Developer

"I spend my days and nights on Educative. It is indispensable. It is such a unique and reader-friendly site"

Souvik Kundu

Front-end Developer

"Your courses are simply awesome, the depth they go into and the breadth of coverage is so good that I don't have to refer to 10 different websites looking for interview topics and content."

Vinay Krishnaiah

Software Developer

"I've tried probably 5-7 different sites and Educative is easily the best. It perfectly blends explanation with interactivity"

Eric Downs

Musician/Entrepeneur

Hands-on Learning Powered by AI

See how Educative uses AI to make your learning more immersive than ever before.

Instant Code Feedback

Evaluate and debug your code with the click of a button. Get real-time feedback on test cases, including time and space complexity of your solutions.

AI-Powered Mock Interviews

Put your skills to the test in a simulated interview setting. Receive personalized feedback based on your performance. Available in Premium & Premium Plus plans.

Adaptive Learning

At various checkpoints throughout Educative courses, you will be prompted to take a quick assessment. Receive a condensed curriculum tailored to your strengths and skill gaps.

Explain with AI

Select any text within any Educative course, and get an instant explanation — without ever leaving your browser.

AI Code Mentor

AI Code Mentor helps you quickly identify errors in your code, learn from your mistakes, and nudge you in the right direction — just like a 1:1 tutor!

Free Resources

FOR TEAMS

Interested in this course for your business or team?

Unlock this course (and 1,000+ more) for your entire org with DevPath