Book Image

C# 6 and .NET Core 1.0: Modern Cross-Platform Development

Book Image

C# 6 and .NET Core 1.0: Modern Cross-Platform Development

Overview of this book

With the release of .NET Core 1.0, you can now create applications for Mac OS X and Linux, as well as Windows, using the development tools you know and love. C# 6 and .NET Core 1.0 has been divided into three high-impact sections to help start putting these new features to work. First, we'll run you through the basics of C#, as well as object-orient programming, before taking a quick tour through the latest features of C# 6 such as string interpolation for easier variable value output, exception filtering, and how to perform static class imports. We'll also cover both the full-feature, mature .NET Framework and the new, cross-platform .NET Core. After quickly taking you through C# and how .NET works, we'll dive into the internals of the .NET class libraries, covering topics such as performance, monitoring, debugging, internationalization, serialization, and encryption. We'll look at Entity Framework Core 1.0 and how to develop Code-First entity data models, as well as how to use LINQ to query and manipulate that data. The final section will demonstrate the major types of applications that you can build and deploy cross-device and cross-platform. In this section, we'll cover Universal Windows Platform (UWP) apps, web applications, and web services. Lastly, we'll help you build a complete application that can be hosted on all of today's most popular platforms, including Linux and Docker. 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 Core.
Table of Contents (25 chapters)
C# 6 and .NET Core 1.0
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Taking ASP.NET Core further


Now that you've seen the basics of how models, views, and controllers work together to provide a web application, let's look at some common scenarios, such as passing parameters and annotating models.

Passing parameters using a route value

Back in the HomeController class, add the following action method. It uses something called the default model binder to automatically match the id passed in the route to the parameter named id in the method.

Tip

Model binders are very powerful, and the default one does a lot for you. For advanced scenarios, you can create your own by implementing the IModelBinder interface, but that is beyond the scope of this book.

Inside the method, we check to see whether the id is null, and if so, it returns a 404 status code and message. Otherwise, we can connect to the database and try to retrieve a product using the id variable. If we find a product, we pass it to a view; otherwise, we return a different 404 status code and message:

public...