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All LessonsFree Lessons (2)

Getting Started

Introduction What Is LINQ?LINQ and Declarative Programming

LINQ Method: Where

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

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

Query-like Syntax Common Mistakes and What to Do Exercise: Remove Mistakes

Refactor with LINQ

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?

LINQ and .NET 6 Chunk Method DistinctBy Method Take Method with Ranges XOrDefault Methods with Defaults Quiz on New LINQ Methods

Wrap-up!

Getting Started with LINQ in C#

LINQ and Immutability

Learn what happens to input collections when working with LINQ.

We'll cover the following...

Does LINQ change input collections?

We’ve learned how to use the Where method. It returns a new collection with the ...