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Tod Vachev

In this course you will learn everything you need to know about LINQ Operations and how to perform them.

We start off from the most basic operations and build towards more complex ones.

Both Query and Method syntax is covered in the course.

And of course, all the source code will be provided for each of the sections in the course, in a nicely ordered and structured fashion, so that you can use the code to practice and learn.

The course is aimed at students that have some coding experience in general and with C# in particular, a little bit of OOP knowledge is required, for some of the lectures.

Read more

In this course you will learn everything you need to know about LINQ Operations and how to perform them.

We start off from the most basic operations and build towards more complex ones.

Both Query and Method syntax is covered in the course.

And of course, all the source code will be provided for each of the sections in the course, in a nicely ordered and structured fashion, so that you can use the code to practice and learn.

The course is aimed at students that have some coding experience in general and with C# in particular, a little bit of OOP knowledge is required, for some of the lectures.

The topics that we are covering are:

  • LINQ Basics with Query syntax – we will start with the most basic operations with query syntax and build towards more complex ones

  • Grouping Operations with Query syntax – grouping allows you to group the items in a collection by a given common key, for example to group a list of people by their age. You will learn 5 different types of group operations

  • Joining Operations with Query syntax – joining allows you to join two different collections by a common key, so its similar to grouping, but it just does it on two collections and not on one. You will learn the 3 major types of join operations and a few of their derivations

  • The Let keyword – that allows you to create internal variables inside your queries

  • LINQPad – short introduction to this nice piece of software that you can use while you study LINQ to better visualize the results of the operations

  • LINQ Basics with Method syntax – here we will reiterate what we have already learned about LINQ but this time you will leran how to perform these operations with Method Syntax. Method syntax makes some of the operations easier to implement than Query syntax

  • Grouping with Method syntax

  • Joining with Method syntax

  • Filtering, Converting and Ordering with Method syntax – while by this point you will already be familiar with the basics of these operations, there are things that need to be considered while performing these operations with Method Syntax. You will learn what are the common pitfalls.

  • Cool Stuff in LINQ – Finally we will end with some cool operations that we can easily perform by using the LINQ Methods, how we can generate different sequences of numbers, characters, random numbers and many other things. More interesting things like Set, quantify, partition, concatenation and aggregation operations will also be explained

There are tons and tons of tutorials on Youtube and other websites, so why would you have to pay for this course?

The answer is very simple, in this course you will get every single lecture systemized in such way, that it ensures smooth transition between the previous and the following topic. Guaranteeing great learning experience.

There are no stones left unturned, everything is explained in great detail (but not too much, that would be boring :) )

The video lectures in the course are produced with the highest possible audio and video quality. No static noises to disturb you while you watch the videos, no blurry images, everything is crystal clear with crisp audio.

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What's inside

Learning objectives

  • You will understand all linq operations
  • Linq query syntax
  • Linq method syntax
  • Linq group operations
  • Linq join operations
  • Set operations with linq methods
  • Partitioning operations with linq methods
  • Quantifying operations with linq methods
  • Aggregation operations with linq methods
  • Concatenation operations with linq methods

Syllabus

Introduction
BONUS: Useful Shortcuts and General Quality Code Tips PDF
Basic LINQ Query
What is LINQ, Where does it Apply and How to Use it?
Read more
IEnumerable
LINQ Examples - Where, Select, Sorting, Multiple Conditions and More
LINQ Queries on Objects
Creating/Extracting New Objects with LINQ Queries - Select New
The let Keyword - Internal Variables and Multiple from
LINQ Examples - Source Code
LINQPad Supportive Tool
LINQPad Introduction - Help Yourselves While Studying LINQ!
Grouping LINQ Queries
Introduction to Grouping - group, by
Group by Multiple Keys
Extend a Group Query With into
Grouping with Custom Keys
How Many Items In Each Group?
Grouping Source Code
Joining LINQ Queries
Basic Join and Inner Join of Objects with LINQ Query - join
Inner Join with Composite Key
Group Join and Inner Group Join
Left Outer Join
Join Source Code
Introduction to LINQ with Method Syntax (Lambda Operators)
Introduction to Method Syntax with Lambda Operators
The Difference Between Select and Where in Method Syntax
Short ForEach with Lambda and Linq Method
Source Code
Grouping with Method Syntax (Lambda Operators)
Grouping Introduction and Grouping by MultiKey
Grouping by Custom Keys and Custom Final Objects
Joining with Method Syntax (Lambda Operators)
Inner Join and Composite Join
Group Join and Group Inner Join
Left Outer Join - Anonymous and Type Final Objects
Filtering, Converting and Ordering - Method and Query Syntax
Filtering a Collection by The Type of The Items in it
Filtering with "Where" and Things To Consider
Converting To Lists, Arrays and From One Type to Another
Ordering with Method Syntax - Common Pitfall
Filtering, Converting and Ordering - Source Code
Cool Stuff in LINQ
Generating Sequences - Enumerable.Range
Checking Collections for Equality
Set Operations - Distinct, Intersect, Union, Except
Quantifying Operations - All, Any, Contains
Partitioning Operations - Skip, Take, SkipWhile, TakeWhile
Concatenating Collections - The Concat Method
Aggregation Operations - Aggregate, Sum, Min, Max
Cool Stuff in LINQ - Source Code
Bonus Section
Bonus Lecture: Get my other courses with discount!

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Activities

Be better prepared before your course. Deepen your understanding during and after it. Supplement your coursework and achieve mastery of the topics covered in The Ultimate LINQ with C# Masterclass - Basics to Advanced with these activities:
Review C# Fundamentals
Solidify your understanding of C# basics to better grasp LINQ syntax and concepts.
Show steps
  • Review C# syntax and data types.
  • Practice writing simple C# programs.
  • Familiarize yourself with C# collections (lists, arrays, dictionaries).
Review "C# 8.0 and .NET Core 3.0 – Modern Cross-Platform Development"
Gain a deeper understanding of the C# language and .NET Core framework to better appreciate LINQ's capabilities.
Show steps
  • Read the chapters on C# language features and .NET Core fundamentals.
  • Experiment with the code examples provided in the book.
LINQPad Exercises
Practice LINQ queries and method syntax in LINQPad to reinforce your understanding of the concepts covered in the course.
Show steps
  • Download and install LINQPad.
  • Work through LINQPad tutorials to familiarize yourself with the tool.
  • Write LINQ queries and method syntax expressions to solve various problems.
Four other activities
Expand to see all activities and additional details
Show all seven activities
Create a LINQ Cheat Sheet
Consolidate your knowledge by creating a cheat sheet summarizing LINQ query syntax, method syntax, and common operations.
Show steps
  • Review the course materials and identify key LINQ concepts.
  • Organize the information into a concise and easy-to-understand format.
  • Include examples of LINQ queries and method syntax expressions.
Project: LINQ Data Transformation
Apply your LINQ skills to transform and manipulate real-world data.
Show steps
  • Find a dataset (e.g., CSV file) containing data you want to analyze.
  • Use LINQ to filter, sort, group, and transform the data.
  • Display the results in a meaningful way (e.g., console output, data visualization).
Build a Data Visualization with LINQ
Create a data visualization using LINQ to process and prepare the data for charting.
Show steps
  • Choose a charting library (e.g., Chart.js, Plotly).
  • Use LINQ to aggregate and transform data into a format suitable for the charting library.
  • Create a visualization that effectively communicates insights from the data.
Contribute to a LINQ-related Open Source Project
Deepen your understanding of LINQ by contributing to an open-source project that utilizes LINQ.
Show steps
  • Find an open-source project on GitHub that uses LINQ.
  • Identify a bug or feature request that you can address.
  • Submit a pull request with your changes.

Career center

Learners who complete The Ultimate LINQ with C# Masterclass - Basics to Advanced will develop knowledge and skills that may be useful to these careers:
C# Developer
A C# developer builds applications using the C# programming language. This course helps deepen knowledge of LINQ, a core component of C#. The comprehensive coverage of LINQ operations, including group operations, join operations, and set operations, lets a C# developer write cleaner and more efficient code. The mastery of both query and method syntax enables a C# developer to choose the most appropriate syntax. Also, this course's instruction on generating sequences and using operations like partitioning, concatenation, and aggregation operations help to tackle complex data manipulation tasks. The course's coverage of LINQPad can be useful for testing queries and visualizing results during development.
Software Developer
A software developer designs, develops, and tests software applications. This course assists with writing efficient and maintainable code with LINQ. The extensive coverage of LINQ operations, including grouping and joining, lets a software developer manipulate data effectively. Mastering query and method syntax enables writing concise and readable queries, which are essential for handling large datasets and complex business logic. The section on generating sequences can be useful when writing unit tests or generating test data. By learning the cool stuff in LINQ, such as set, quantify, and aggregate operations, a software developer can improve data processing capabilities.
Full-Stack Developer
A full stack developer works on both the front end and back end of applications. This course helps a full stack developer to improve data handling capabilities across the entire application stack. Understanding LINQ basics, including query and method syntax, lets a developer write efficient data access code for both front-end and back-end components. The instruction on grouping and joining operations facilitates the management of data relationships and complex queries. The knowledge of filtering, converting, and ordering operations enables developers to process and format data effectively. The capability to use set operations and aggregation operations can be useful for data analysis and reporting tasks on both sides of the application.
Backend Developer
A backend developer works on the server side of applications, managing databases and APIs. This course assists a backend developer to improve data handling capabilities within backend systems. The focus on LINQ basics, including query and method syntax, helps backend developers write efficient data access code. The course's detailed instruction on grouping and joining operations makes it easier to manage data relationships and perform complex queries. The knowledge of filtering, converting, and ordering operations enables backend developers to process and format data for APIs and other services. The ability to use set operations and aggregation operations can be useful for data analysis and reporting tasks.
Application Developer
An application developer creates software applications for various platforms. This course helps with writing effective data queries and manipulations within applications. The focus on LINQ basics, including query and method syntax, let an application developer work productively with data collections. Understanding grouping and joining operations facilitates the creation of complex application features that involve data relationships. The ability to perform filtering, converting, and ordering operations is essential for managing and presenting data effectively within applications. Furthermore, the section on generating sequences and set operations can be useful for tasks such as creating sample data or managing application settings.
Database Developer
A database developer designs and implements databases. This course helps to understand the querying aspect via LINQ. The focus on joining operations is beneficial for relating data across multiple tables and for creating efficient database queries. Grouping operations assist in data aggregation and summarization. The course helps database developers visualize and test queries, thanks to the LINQPad introduction. Additionally, knowledge of method and query syntax enables database developers to optimize data retrieval and manipulation processes, which are crucial for database performance. The coverage of set operations proves useful when managing data within database tables.
Data Analyst
A data analyst examines data to identify trends and insights. This course assists with using LINQ to efficiently query, filter, and aggregate data from various sources. The course provides knowledge of grouping and joining operations, which are useful for combining and analyzing datasets from different sources. The understanding of partitioning and aggregation operations enables a data analyst to perform complex calculations and summaries. Learning to generate sequences also supports creating test datasets or simulating scenarios for analysis. The ability to use both query and method syntax makes a data analyst more versatile in data manipulation tasks.
Business Intelligence Analyst
A business intelligence analyst uses data to help organizations make better decisions. This course may be useful for using LINQ to query and analyze data from various sources. The focus on grouping and joining operations can help a business intelligence analyst to combine and aggregate data from different systems. The understanding of partitioning and aggregation operations helps in performing complex calculations and summaries. The ability to use both query and method syntax enables business intelligence analysts to be more versatile in their data manipulation tasks.
Data Engineer
A data engineer designs, builds, and manages data pipelines. This course may be useful for understanding how to manipulate and transform data using LINQ within these pipelines. The knowledge of joining and grouping operations aids a data engineer in combining and aggregating data from various sources. The understanding of partitioning and aggregation operations is relevant for optimizing data processing workflows. The ability to generate sequences could be useful for creating test data or implementing data transformations. By understanding LINQ's capabilities, a data engineer may improve the efficiency and maintainability of data transformation processes.
ETL Developer
An extract, transform, load developer (ETL) designs and implements processes for moving data between systems. This course may be useful for using LINQ to perform data transformations within ETL processes. The knowledge of joining and grouping operations helps an ETL developer to combine and aggregate data from various sources. The understanding of partitioning and aggregation operations is relevant for optimizing data processing workflows. The ability to generate sequences can be useful for creating test data or implementing data transformations. The ability to use set operations helps to manage data within the ETL pipeline.
Academic Researcher
An academic researcher conducts research in a specific field, often within a university setting. This course may be useful for analyzing data and performing statistical analyses. The knowledge of grouping and aggregation operations is relevant for summarizing and interpreting research findings. An academic researcher typically requires a doctoral degree.
Data Architect
A data architect designs and oversees the implementation of data management systems. The course may be useful for understanding how LINQ can be used to optimize data access and manipulation across different systems. Knowledge of joining and grouping operations supports the design of efficient data integration strategies. The understanding of partitioning and aggregation operations may be relevant for designing scalable data processing solutions. The ability to use both query and method syntax enables a data architect to make informed decisions about data access technologies. A data architect usually requires a master's degree.
Machine Learning Engineer
A machine learning engineer develops and implements machine learning models. This course may be useful for preprocessing and manipulating data for machine learning tasks using LINQ. The ability to perform set operations and aggregation operations can enhance the analysis and feature engineering processes. A machine learning engineer typically requires an advanced degree in computer science, statistics, or a related field.
Quantitative Analyst
A quantitative analyst, often working in the finance industry, develops and implements mathematical models for financial analysis. This course may be useful for manipulating and analyzing data using LINQ. The knowledge of grouping and aggregation operations would aid in performing statistical analyses on datasets. A quantitative analyst typically requires an advanced degree, such as a master's or PhD in mathematics, statistics, or a related field.
Game Developer
A game developer creates video games for various platforms. This course may be useful for managing and manipulating game data efficiently using LINQ. The ability to perform filtering, converting, and ordering operations enables game developers to optimize game performance. Also, understanding how to use set operations might be valuable in handling game assets and player data.

Reading list

We've selected one books that we think will supplement your learning. Use these to develop background knowledge, enrich your coursework, and gain a deeper understanding of the topics covered in The Ultimate LINQ with C# Masterclass - Basics to Advanced.
Provides a comprehensive overview of C# and .NET Core, including the latest features and best practices. It's a useful reference for understanding the underlying platform on which LINQ operates. While not strictly about LINQ, it provides valuable context and background knowledge. This book is commonly used as a textbook at academic institutions.

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