Book Image

C# 7.1 and .NET Core 2.0 ??? Modern Cross-Platform Development - Third Edition

By : Mark J. Price
Book Image

C# 7.1 and .NET Core 2.0 ??? Modern Cross-Platform Development - Third Edition

By: Mark J. Price

Overview of this book

C# 7.1 and .NET Core 2.0 – Modern Cross-Platform Development, Third Edition, is a practical guide to creating powerful cross-platform applications with C# 7.1 and .NET Core 2.0. It gives readers of any experience level a solid foundation in C# and .NET. The first part of the book runs you through the basics of C#, as well as debugging functions and object-oriented programming, before taking a quick tour through the latest features of C# 7.1 such as default literals, tuples, inferred tuple names, pattern matching, out variables, and more. After quickly taking you through C# and how .NET works, this book dives into the .NET Standard 2.0 class libraries, covering topics such as packaging and deploying your own libraries, and using common libraries for working with collections, performance, monitoring, serialization, files, databases, and encryption. The final section of the book demonstrates the major types of application that you can build and deploy cross-device and cross-platform. In this section, you'll learn about websites, web applications, web services, Universal Windows Platform (UWP) apps, and mobile apps. By the end of the book, you'll be armed with all the knowledge you need to build modern, cross-platform applications using C# and .NET.
Table of Contents (31 chapters)
Title Page
Credits
About the Author
About the Reviewers
www.PacktPub.com
Customer Feedback
Preface
2
Part 1 – C# 7.1
8
Part 2 – .NET Core 2.0 and .NET Standard 2.0
16
Part 3 – App Models
22
Summary
Index

Exploring console applications further


We have already created and used basic console applications, but now we should delve into them more deeply.

Console applications are text-based and are run at Command Prompt. They typically perform simple tasks that need to be scripted, such as compiling a file or encrypting a section of a configuration file. They can have arguments passed to them to control their behavior; for example, to encrypt the database connection strings section in a Web.config file, use the following command line:

aspnet_regiis -pdf "connectionStrings" "c:\mywebsite" 

Displaying output to the user

The two most common tasks that a console application performs are writing and reading data. We have already been using the WriteLine method to output. If we didn't want a carriage return at the end of the lines, we could have used the Write method.

C# 6 and later has a handy feature named string interpolation. This allows us to easily output one or more variables in a nicely formatted...