Book Image

C# 9 and .NET 5 – Modern Cross-Platform Development - Fifth Edition

By : Mark J. Price
Book Image

C# 9 and .NET 5 – Modern Cross-Platform Development - Fifth Edition

By: Mark J. Price

Overview of this book

In C# 9 and .NET 5 – Modern Cross-Platform Development, Fifth Edition, expert teacher Mark J. Price gives you everything you need to start programming C# applications. This latest edition uses the popular Visual Studio Code editor to work across all major operating systems. It is fully updated and expanded with a new chapter on the Microsoft Blazor framework. The book’s first part teaches the fundamentals of C#, including object-oriented programming and new C# 9 features such as top-level programs, target-typed new object instantiation, and immutable types using the record keyword. Part 2 covers the .NET APIs, for performing tasks like managing and querying data, monitoring and improving performance, and working with the file system, async streams, serialization, and encryption. Part 3 provides examples of cross-platform apps you can build and deploy, such as websites and services using ASP.NET Core or mobile apps using Xamarin.Forms. The best type of application for learning the C# language constructs and many of the .NET libraries is one that does not distract with unnecessary application code. For that reason, the C# and .NET topics covered in Chapters 1 to 13 feature console applications. In Chapters 14 to 20, having mastered the basics of the language and libraries, you will build practical applications using ASP.NET Core, Model-View-Controller (MVC), and Blazor. By the end of the book, you will have acquired the understanding and skills you need to use C# 9 and .NET 5 to create websites, services, and mobile apps.

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C# 9 and .NET 5 – Modern Cross-Platform Development - Fifth Edition
Mark J. Price
Nov, 2020 | 822 pages
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Table of Contents (23 chapters)
Preface
Preface
What this book covers
What you need for this book
Get in touch
1
Hello, C#! Welcome, .NET!
Hello, C#! Welcome, .NET!
Setting up your development environment
Understanding .NET
Building console apps using Visual Studio Code
Downloading solution code from the GitHub repository
Looking for help
Practicing and exploring
Summary
Free Chapter
2
Speaking C#
Speaking C#
Introducing C#
Understanding C# basics
Working with variables
Working with null values
Exploring console applications further
Practicing and exploring
Summary
3
Controlling Flow and Converting Types
Controlling Flow and Converting Types
Operating on variables
Understanding selection statements
Understanding iteration statements
Casting and converting between types
Practicing and exploring
Summary
4
Writing, Debugging, and Testing Functions
Writing, Debugging, and Testing Functions
Writing functions
Debugging during development
Logging during development and runtime
Unit testing functions
Practicing and exploring
Summary
5
Building Your Own Types with Object-Oriented Programming
Building Your Own Types with Object-Oriented Programming
Talking about object-oriented programming
Building class libraries
Storing data within fields
Writing and calling methods
Controlling access with properties and indexers
Pattern matching with objects
Working with records
Practicing and exploring
Summary
6
Implementing Interfaces and Inheriting Classes
Implementing Interfaces and Inheriting Classes
Setting up a class library and console application
Simplifying methods
Raising and handling events
Implementing interfaces
Making types safely reusable with generics
Managing memory with reference and value types
Inheriting from classes
Casting within inheritance hierarchies
Inheriting and extending .NET types
Practicing and exploring
Summary
7
Understanding and Packaging .NET Types
Understanding and Packaging .NET Types
Introducing .NET 5
Understanding .NET components
Publishing your applications for deployment
Decompiling assemblies
Packaging your libraries for NuGet distribution
Porting from .NET Framework to .NET 5
Practicing and exploring
Summary
8
Working with Common .NET Types
Working with Common .NET Types
Working with numbers
Working with text
Pattern matching with regular expressions
Storing multiple objects in collections
Working with spans, indexes, and ranges
Working with network resources
Working with types and attributes
Working with images
Internationalizing your code
Practicing and exploring
Summary
9
Working with Files, Streams, and Serialization
Working with Files, Streams, and Serialization
Managing the filesystem
Reading and writing with streams
Encoding and decoding text
Serializing object graphs
Practicing and exploring
Summary
10
Protecting Your Data and Applications
Protecting Your Data and Applications
Understanding the vocabulary of protection
Encrypting and decrypting data
Hashing data
Signing data
Generating random numbers
What's new in cryptography?
Authenticating and authorizing users
Practicing and exploring
Summary
11
Working with Databases Using Entity Framework Core
Working with Databases Using Entity Framework Core
Understanding modern databases
Setting up EF Core
Defining EF Core models
Querying EF Core models
Loading patterns with EF Core
Manipulating data with EF Core
Practicing and exploring
Summary
12
Querying and Manipulating Data Using LINQ
Querying and Manipulating Data Using LINQ
Writing LINQ queries
Working with sets and bags 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
Practicing and exploring
Summary
13
Improving Performance and Scalability Using Multitasking
Improving Performance and Scalability Using Multitasking
Understanding processes, threads, and tasks
Monitoring performance and resource usage
Running tasks asynchronously
Synchronizing access to shared resources
Understanding async and await
Practicing and exploring
Summary
14
Introducing Practical Applications of C# and .NET
Introducing Practical Applications of C# and .NET
Understanding app models for C# and .NET
New features in ASP.NET Core
Understanding SignalR
Understanding Blazor
Understanding the bonus chapters
Building an entity data model for Northwind
Summary
15
Building Websites Using ASP.NET Core Razor Pages
Building Websites Using ASP.NET Core Razor Pages
Understanding web development
Understanding ASP.NET Core
Exploring Razor Pages
Using Entity Framework Core with ASP.NET Core
Using Razor class libraries
Configuring services and the HTTP request pipeline
Practicing and exploring
Summary
16
Building Websites Using the Model-View-Controller Pattern
Building Websites Using the Model-View-Controller Pattern
Setting up an ASP.NET Core MVC website
Exploring an ASP.NET Core MVC website
Customizing an ASP.NET Core MVC website
Using other project templates
Practicing and exploring
Summary
17
Building Websites Using a Content Management System
Building Websites Using a Content Management System
Understanding the benefits of a CMS
Understanding Piranha CMS
Defining components, content types, and templates
Testing the Northwind CMS website
Practicing and exploring
Summary
18
Building and Consuming Web Services
Building and Consuming Web Services
Building web services using the ASP.NET Core Web API
Documenting and testing web services
Consuming services using HTTP clients
Implementing advanced features
Understanding other communication technologies
Practicing and exploring
Summary
19
Building Intelligent Apps Using Machine Learning
Building Intelligent Apps Using Machine Learning
Understanding machine learning
Understanding ML.NET
Making product recommendations
Practicing and exploring
Summary
20
Building Web User Interfaces Using Blazor
Building Web User Interfaces Using Blazor
Understanding Blazor
Building components using Blazor Server
Building components using Blazor WebAssembly
Practicing and exploring
Summary
21
Building Cross-Platform Mobile Apps
Building Cross-Platform Mobile Apps
Understanding XAML
Understanding Xamarin and Xamarin.Forms
Building mobile apps using Xamarin.Forms
Consuming a web service from a mobile app
Practicing and exploring
Summary
Epilogue
22
Index
Index

Exploring an ASP.NET Core MVC website

Let's walk through the parts that make up a modern ASP.NET Core MVC website.

Understanding ASP.NET Core MVC startup

Appropriately enough, we will start by exploring the MVC website's default startup configuration:

  1. Open the Startup.cs file.
  2. Note the read-only Configuration property that can be passed in and set in the class constructor, as shown in the following code: 
    public Startup(IConfiguration configuration)
{
  Configuration = configuration;
}
public IConfiguration Configuration { get; }
  3. Note that the ConfigureServices method adds an application database context using SQLite with its database connection string loaded from the appsettings.json file for its data storage, adds ASP.NET Core Identity for authentication and configures it to use the application database, and adds support for MVC controllers with views, as shown in the following code: 
    public void ConfigureServices(IServiceCollection...
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