Book Image

C# 7 and .NET: Designing Modern Cross-platform Applications

By : Mark J. Price, Ovais Mehboob Ahmed Khan
Book Image

C# 7 and .NET: Designing Modern Cross-platform Applications

By: Mark J. Price, Ovais Mehboob Ahmed Khan

Overview of this book

C# is a widely used programming language, thanks to its easy learning curve, versatility, and support for modern paradigms. The language is used to create desktop apps, background services, web apps, and mobile apps. .NET Core is open source and compatible with Mac OS and Linux. There is no limit to what you can achieve with C# and .NET Core. This Learning Path begins with the basics of C# and object-oriented programming (OOP) and explores features of C#, such as tuples, pattern matching, and out variables. You will understand.NET Standard 2.0 class libraries and ASP.NET Core 2.0, and create professional websites, services, and applications. You will become familiar with mobile app development using Xamarin.Forms and learn to develop high-performing applications by writing optimized code with various profiling techniques. By the end of C# 7 and .NET: Designing Modern Cross-platform Applications, you will have all the knowledge required to build modern, cross-platform apps using C# and .NET. This Learning Path includes content from the following Packt products: • C# 7.1 and .NET Core 2.0 - Modern Cross-Platform Development - Third Edition by Mark J. Price • C# 7 and .NET Core 2.0 High Performance by Ovais Mehboob Ahmed Khan
Table of Contents (25 chapters)
Title Page
Copyright
About Packt
Contributors
Preface
16
Designing Guidelines for .NET Core Application Performance
Index

Logging during development and runtime


Once you believe that all the bugs have been removed from your code, you would then compile a release version and deploy the application so people can use it. But no code is bug-free, and during runtime unexpected errors can occur.

End users are notoriously bad about noticing what they were doing when an error occurs, so you should not rely on them accurately providing useful information to fix the problem.

Therefore, it is good practice to add code throughout your application to log what is happening, and especially when exceptions occur, so that you can review the logs and use them to trace the issue and fix the problem.

There are two types that can be used to add simple logging to your code: Debug and Trace. Debug is used to add logging that gets written during development. Trace is used to add logging that gets written during both development and runtime.

Instrumenting with Debug and Trace

You have seen the use of the Console type and its WriteLine method...