This book is for developers who need to get in touch with the new .NET Standard 2.0 Library. If you have a basic knowledge of C# and what a library can do to your code, that's enough to understand this book. Also, if you are a developer who writes third-party libraries, this will give you a fair idea of what .NET Standard 2.0 Library is and how you can cater to various .NET based platforms in Windows, Linux, and macOS using it.

Chapter 1, Back to Basics, gives an overview of where it all began for the starters trying to build their first .NET based class library. It talks about the problems with this approach. Getting started with a simple project and using it with a console application and a classic Windows based application, the chapter talks about the issues with the current approach of libraries available. It introduces readers to .NET Standard 2.0 and its versions. How to create the first .NET Standard 2.0 library and use it with various .NET flavors such as .NET Framework and .NET Core applications is covered.

Chapter 2, Primitives, Collections, LINQ, and More, explores the Core of .NET Standard 2.0. It talks about Primitives, Collections, Reflection, and LINQ. The areas supported so far are covered. It makes use of features among different flavors of .NET Framework.

Chapter 3, Working with Files, provides an explanation of System.IO and System.Security within the .NET Standard 2.0 and the usage of read write operations using the filesystem. Also, it introduces usage in cross-platform versions of .NET Core in Ubuntu and macOS.

Chapter 4, Functional Programming, introduces functional programming capabilities in C# and how to use them in .NET Standard 2.0 Library.

Chapter 5, XML and Data, explains the usage of System.XML and System.Data within .NET Standard 2.0 for creating XML Documents and the usage of Data Tables.

Chapter 6, Exploring Threading, talks about Thread support for creating a multithreaded .NET Standard 2.0 library. This is in addition to the usage of Tasks as asynchronous capabilities of C# within the library.

Chapter 7, Networking, focuses on the usage of System.Net within .NET Standard 2.0. It dives into Sockets, Http, and Mail and how to use them in a .NET Standard Library 2.0.

Chapter 8, To iOS with Xamarin, outlines creating a simple mobile-based application using Visual Studio for Mac mobile iOS tools. The chapter guides through to create a .NET Standard 2.0 library and use it with the built iOS application.

Chapter 9, To Android with Xamarin, takes you through creating a simple mobile-based application using Visual Studio for Mac and Android tools. It showcases how to create a .NET Standard 2.0 library and use it with the built Android application.

Chapter 10, Let's Fine-Tune Our Library, demonstrates how to fine-tune .NET Standard 2.0 library using Debugging tools and Diagnostics tools. Also, it helps you capture exceptions and ensure that the end user has a solid experience using our .NET Standard Library 2.0.

Chapter 11, Packaging and Delivery, discusses how to deliver a completed .NET Standard 2.0 Library to the world. How to use NuGet package manager, creating a package, and delivering it is covered.

Chapter 12, Deploying, informs how to create a .NET Standard Library 2.0, use it with ASP.NET Core web applications, and deploy it to Azure Cloud.

This book assumes that readers have basic knowledge of C#. Also, it assumes basic knowledge of using Visual Studio, installing packages using NuGet, and referencing libraries within projects from other projects.

Basic knowledge of using command-line tools such as bash on Ubuntu and terminal in macOS will be an added advantage but not a must.

public void WriteLog(string message)
{
logFile.WriteLine($"{DateTime.Now} Log Message: {message} ");
}

if (!File.Exists(logFileName))
{
logFile = File.CreateText(logFileName);
}
else
{
logFile = File.AppendText(logFileName);
}

$ dotnet build

In this book, you will find several headings that appear frequently (Getting ready, How to do it..., How it works..., There's more..., and See also).

To give clear instructions on how to complete a recipe, use these sections as follows:

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