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
About Packt
Designing Guidelines for .NET Core Application Performance

Best practices in writing optimized code in C#

There are many factors that negatively impact the performance of a .NET Core application. Sometimes these are minor things that were not considered earlier at the time of writing the code, and are not addressed by the accepted best practices. As a result, to solve these problems, programmers often resort to ad hoc solutions. However, when bad practices are combined together, they produce performance issues. It is always better to know the best practices that help developers write cleaner code and make the application performant.

In this section, we will learn, the following topics:

  • Boxing and unboxing overhead
  • String concatenation
  • Exceptions handling
  • for versus foreach
  • Delegates

Boxing and unboxing overhead

The boxing and unboxing methods are not always good to use and they negatively impact the performance of mission-critical applications. Boxing is a method of converting a value type to an object type, and is done implicitly, whereas unboxing is a...