C# 10 and .NET 6 – Modern Cross-Platform Development - Sixth Edition

11

Querying and Manipulating Data Using LINQ

This chapter is about Language INtegrated Query (LINQ) expressions. LINQ is a set of language extensions that add the ability to work with sequences of items and then filter, sort, and project them into different outputs.

This chapter will cover the following topics:

• Writing LINQ expressions
• Working with sets using LINQ
• Using LINQ with EF Core
• Sweetening LINQ syntax with syntactic sugar
• Using multiple threads with parallel LINQ
• Creating your own LINQ extension methods
• Working with LINQ to XML

Writing LINQ expressions

Although we wrote a few LINQ expressions in Chapter 10, Working with Data Using Entity Framework Core, they weren't the focus, and so I didn't properly explain how LINQ works, so let's ...