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LINQ Mastery: 100+ Exercises to Code Like a Pro
Rating: 5.0 out of 5(2 ratings)
81 students
Created byCodeCraft Academy
Last updated 4/2026
English

What you'll learn

  • Understand the fundamentals of LINQ: Learn the basics of LINQ syntax and how to integrate it seamlessly into C# programming.
  • Master LINQ query operators: Gain expertise in commonly used operators like Where, Select, GroupBy, and Join to manipulate and analyze data efficiently.
  • Work with LINQ to SQL and LINQ to XML: Build real-world solutions by querying databases and manipulating XML data with LINQ.
  • Optimize and debug LINQ queries: Learn how to write performance-optimized LINQ queries and troubleshoot common issues effectively.

Coding Exercises

This course includes our updated coding exercises so you can practice your skills as you learn.

See a demo
Image of coding exercise example

Course content

5 sections • 103 lectures • 2h 54m total length

  • Filtering with LINQ Where
  • Solution1:14
  • Sorting Products by Name and Price
  • Solution0:52
  • Selecting Specific Fields with LINQ Select
  • Solution0:57
  • Finding a Specific Product
  • Solution1:10
  • Aggregating Data with LINQ - Count, Sum, Min, Max, and Average
  • Solution1:05
  • Grouping Products by Price Range with LINQ GroupBy
  • Solution0:26
  • Performing Inner Joins with LINQ Join
  • Solution1:11
  • Checking Conditions with LINQ Any and All
  • Solution1:07
  • Removing Duplicates with LINQ Distinct
  • Solution0:57
  • Flattening Nested Collections with LINQ SelectMany
  • Solution1:01
  • Grouping and Joining Orders with Products using LINQ GroupJoin
  • Solution1:21
  • Partitioning Data with LINQ Take and Skip
  • Solution0:56
  • Filtering with Multiple Conditions Using LINQ Where
  • Solution0:59
  • Calculating Totals with LINQ Sum and Conditional Aggregation
  • Solution0:45
  • Sorting Products by Price and Name
  • Solution0:54
  • Grouping Products by Price Range
  • Solution0:58
  • Custom Aggregation Using LINQ Aggregate
  • Solution0:51
  • Finding the First and Last Products in a Price Range
  • Solution0:52
  • Counting Products with Count and LongCount Based on Conditions
  • Solution0:58
  • Flattening Nested Collections Using SelectMany
  • Solution0:57
  • Finding Unique Products Using Distinct
  • Solution0:45
  • Combining Product Lists Using Union
  • Solution0:59
  • Identifying Shared Products in Both Stores Using Intersect
  • Solution0:55
  • Identifying Products Unique to Store A Using Except
  • Solution0:59
  • Filtering and Projecting Product Information Using Select and Where
  • Solution0:56
  • Verifying Product Availability Using Any, All, and Contains
  • Solution1:06
  • Partitioning Products List Using Take, Skip, TakeWhile, and SkipWhile
  • Solution1:18

Requirements

  • Basic knowledge of C# programming and familiarity with Visual Studio or similar IDEs.
  • Access to a development environment where C# can be executed (e.g., Visual Studio Community Edition).
  • No prior experience with LINQ is required—this course starts from the basics and progresses to advanced concepts.

Description

Are you ready to elevate your C# programming skills and master LINQ (Language Integrated Query)? This course is designed for developers who want to seamlessly query and manipulate data using LINQ's powerful and elegant syntax. Through practical exercises, you will gain a deep understanding of LINQ to Objects, LINQ to SQL, LINQ to XML, and more.

You'll explore the key concepts of LINQ, including filtering, sorting, grouping, and joining data, while tackling real-world scenarios. Whether you’re working with databases, collections, or XML files, this course equips you with the tools to write cleaner, more efficient code.

What you’ll learn:

  • Understand the fundamentals of LINQ and how it integrates with C#: Learn how LINQ enhances code readability and efficiency, seamlessly blending with C# syntax to simplify data queries and manipulation

  • Perform advanced operations, such as nested queries and deferred execution: Gain hands-on experience with LINQ's advanced features, including creating complex queries, leveraging lazy evaluation, and efficiently managing large data sets.

  • Optimize your code using LINQ methods and best practices: Discover tips and strategies to write concise, maintainable, and performance-optimized LINQ queries that adhere to coding best practices

  • Solve real-world problems with hands-on coding exercises: Apply your skills to practical scenarios, such as filtering datasets, transforming collections, and querying relational and non-relational data sources

  • Master LINQ operators and query expressions: Deep dive into essential LINQ operators like Select, Where, Join, GroupBy, and Aggregate, while understanding their use cases and performance considerations.

  • Explore LINQ to SQL, LINQ to XML, and LINQ to Entities: Extend your skills to interact with databases, XML documents, and Entity Framework models, bridging the gap between theory and application.

  • Debug and troubleshoot LINQ queries effectively: Learn how to identify and resolve common issues when working with LINQ, improving the reliability of your code.

This course is packed with examples, tips, and challenges to help you think like a LINQ expert. By the end of this course, you’ll have the skills and confidence to use LINQ effectively in your projects, saving time, boosting efficiency, and improving the quality of your code. Join us now and take your programming expertise to the next level!

Who this course is for:

  • Beginner to intermediate C# developers who want to enhance their data querying skills.
  • Software engineers looking to streamline data manipulation in their projects.
  • Students or professionals preparing for coding interviews or technical tests involving LINQ.
  • Anyone who wants to write more efficient and readable code in their applications.

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