Search⌘ K

Getting Started with LINQ in C#

0%

1.Getting Started

Introduction What Is LINQ?LINQ and Declarative Programming

2.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

3.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

4.Syntax & Pitfalls

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

5.Refactor with LINQ

Replace Comparisons with Any Replace a Set of Choices with FirstOrDefault Validate Objects with All Exercise: Add a Recommended Movie

6.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

7.Wrap-up!

Getting Started with LINQ in C#

LINQ and IEnumerable Type

Learn about LINQ and IEnumerable type.

We'll cover the following...

The IEnumerable type

The `IEnumerable` type

LINQ is a set of extension methods on the IEnumerable type. The IEnumerable type represents objects we can loop through like arrays, lists, dictionaries, and others.

The IEnumerable type has a GetEnumerator() method. It returns an IEnumerator. With this IEnumerator we can iterate over ...