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

Handling exceptions


You've seen several scenarios when errors have occurred. C# calls that an exception being thrown. A best practice is to avoid writing code that will throw an exception whenever possible, but sometimes you can't. In those scenarios, you must catch the exception and handle it.

As you have seen, the default behavior of a console application is to display details about the exception in the console window and then stop running the application.

The default behavior of a Windows desktop application is to display details about the exception in a dialog box and allow the user to choose to either continue or stop running the application.

You can have more control over how you want to handle exceptions using the try-catch statement.

Add a new Console Application project named Ch03_HandlingExceptions.

The try-catch statement

When you know that a statement can cause an error, you should wrap that statement in a try block. For example, parsing from a string to a number can cause an error...