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

Best practices for disposing of objects in .NET Core


We have learned in the previous section that object disposal in .NET Core is automatically done by the GC. Nevertheless, disposing of objects in your code is always a good practice, and is highly recommended when you are working with unmanaged objects. In this section, we will explore some best practices that can be used to dispose of objects while writing code in .NET Core.

Introduction to the IDisposable interface

IDisposable is a simple interface that contains one Dispose method, takes no parameter, and returns void:

public interface IDisposable 
{ 
  void Dispose(); 
} 

It is used to release unmanaged resources. So if any class implements the IDisposable interface, it means that the class contains unmanaged resources and these have to be released by calling the Dispose method of the class.

What are unmanaged resources?

Any resource that is outside of your application boundary is considered an unmanaged resource. It could be a database, filesystem...