Book Image

The C# Workshop

By : Jason Hales, Almantas Karpavicius, Mateus Viegas
4 (2)
Book Image

The C# Workshop

4 (2)
By: Jason Hales, Almantas Karpavicius, Mateus Viegas

Overview of this book

C# is a powerful, versatile language that can unlock a variety of career paths. But, as with any programming language, learning C# can be a challenging process. With a wide range of different resources available, it’s difficult to know where to start. That's where The C# Workshop comes in. Written and reviewed by industry experts, it provides a fast-paced, supportive learning experience that will quickly get you writing C# code and building applications. Unlike other software development books that focus on dry, technical explanations of the underlying theory, this Workshop cuts through the noise and uses engaging examples to help you understand how each concept is applied in the real world. As you work through the book, you'll tackle realistic exercises that simulate the type of problems that software developers work on every day. These mini-projects include building a random-number guessing game, using the publisher-subscriber model to design a web file downloader, creating a to-do list using Razor Pages, generating images from the Fibonacci sequence using async/await tasks, and developing a temperature unit conversion app which you will then deploy to a production server. By the end of this book, you'll have the knowledge, skills, and confidence to advance your career and tackle your own ambitious projects with C#.
Table of Contents (10 chapters)

LINQ

LINQ (pronounced link) is short for Language Integrated Query. LINQ is a general-purpose language that can be used to query objects in memory by using a syntax that is similar to Structured Query Language (SQL), that is, it is used to query databases. It is an enhancement of the C# language that makes it easier to interact with objects in memory using SQL-like Query Expressions or Query Operators (implemented through a series of extension methods).

Microsoft's original idea for LINQ was to bridge the gap between .NET code and data sources, such as relational databases and XML, using LINQ providers. LINQ providers form a set of building blocks that can be used to query various sources of data, using a similar set of Query Operators, without the caller needing to know the intricacies of how each data source works. The following is a list of providers and how they are used:

  • LINQ to Objects: Queries applied to objects in memory, such as those defined in a list...