Udemy

LINQ Tutorial: Master the Key C# Library

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  • 9,001 名學生
  • 更新於 3/2026
4.5
(1,189 個評分)
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課程資料

報名日期
全年招生
課程級別
學習模式
修業期
6 小時 5 分鐘
教學語言
英語
授課導師
Elegant Code – Krystyna Ślusarczyk
評分
4.5
(1,189 個評分)

課程簡介

LINQ Tutorial: Master the Key C# Library

Master LINQ with hands-on practice! Solve real coding challenges and gain fluency in the most powerful library of C#.

Welcome to the "LINQ Tutorial: Master the Key C# Library", the only course you need to become fluent in using library essential for every C# programmer.


LINQ is a must-know for every C# developer. No matter what kind of application you build—now or in the future—you’ll always need to work with collections.

  • Sorting, filtering, transforming? LINQ makes it effortless.

  • Query in-memory collections, databases, XML files, and more—all with clean, expressive code.

  • Master LINQ once, and boost your efficiency in every project.


Curious to see LINQ in action? Watch a free lesson on one of the most commonly used LINQ methods—the Where method!


Why this course?

This isn’t just another theory-heavy course—it's practice-oriented. After each lecture, you’ll tackle:

  • 2 coding exercises to reinforce what you've learned.

  • 1 refactoring challenge where you’ll transform messy code into elegant, efficient LINQ-powered solutions.

Struggling with an exercise? No worries! Every challenge comes with a detailed article explaining the solution.


Who is this course for?

  • C# Beginners: Every concept is explained from the ground up, including lambda expressions and IEnumerable, so you’ll never feel lost.

  • Intermediate Developers: Already familiar with LINQ? This course will help you master it like a pro and understand how it works under the hood.


What will you learn?

  • 64 coding exercises + 32 refactoring challenges to solidify your LINQ expertise.

  • The two LINQ syntaxes—method and query syntax—so you can write code fluently.

  • How to think in LINQ and seamlessly integrate it into your daily coding workflow.

  • The internal mechanics of LINQ, so you not only use it—but truly understand it.


Why LINQ?

LINQ is essential for any C# developer. Employers expect it. Interviewers test it. This course will give you the confidence to ace technical interviews and write professional-grade code.


Additional perks:

  • Full Git repository with all course examples, coding exercises, and refactoring challenges—including solutions.

  • This course is covered by Udemy’s 30-day Refund Policy, so you can try it out risk-free.


Join now and start writing LINQ like a pro!

課程章節

  • 38 個章節
  • 153 堂課
  • 第 1 章 Welcome!
  • 第 2 章 Introduction to LINQ
  • 第 3 章 Any
  • 第 4 章 All
  • 第 5 章 Count
  • 第 6 章 Contains
  • 第 7 章 OrderBy
  • 第 8 章 MinMax
  • 第 9 章 Average
  • 第 10 章 Sum
  • 第 11 章 ElementAt
  • 第 12 章 First and Last
  • 第 13 章 Single
  • 第 14 章 Where
  • 第 15 章 Take
  • 第 16 章 Skip
  • 第 17 章 OfType
  • 第 18 章 Distinct
  • 第 19 章 Prepend and Append
  • 第 20 章 Concat and Union
  • 第 21 章 Collection type change
  • 第 22 章 Select
  • 第 23 章 SelectMany
  • 第 24 章 Generating new collections
  • 第 25 章 Grouping
  • 第 26 章 Intersect and Except
  • 第 27 章 Join
  • 第 28 章 Aggregate
  • 第 29 章 Zip
  • 第 30 章 Introduction to query syntax
  • 第 31 章 OrderBy (query syntax)
  • 第 32 章 Where (query syntax)
  • 第 33 章 Select (query syntax)
  • 第 34 章 SelectMany (query syntax)
  • 第 35 章 GroupBy (query syntax)
  • 第 36 章 Join (query syntax)
  • 第 37 章 LINQ updates
  • 第 38 章 Bonus!

課程內容

  • Master every method from the LINQ library., Learn what lambda expressions are., Solve 64 hands-on coding exercises directly in your browser., Gain fluency in LINQ, making your code more expressive and powerful., Improve code with 32 LINQ refactoring challenges., Learn both query syntax and method syntax., Understand how LINQ works under the hood.


評價

  • M
    Marco Uitendaal
    5.0

    bite sized topics, building up in complexity. Somehow it took me a couple times to grasp selectmany and left joins etc. despite having enough experience in SQL. Would have liked to see a bit of PLINQ and a bit more on the let statement and for instance .Where(boolean && predicate) to filter based on parameters. I run into these at work all the time.

  • J
    Jyoti Gharat
    4.0

    Very good course.

  • S
    Simone Faccio
    5.0

    The course is well organized, the teacher is excellent, and she conveys an engaging passion that has given me the extra energy to tackle every challenge with dedication and a desire to learn. I will continue to follow the entire C# learning process, and my goal is to one day become as good as her, or at least come close. Thank you so much.

  • M
    Mohammed Mahmood
    5.0

    Fantastic course specific to LINQ topic in C#. Very challenging code exercises that makes me think how to use the methods.

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