Book Image

C# 7 and .NET Core: Modern Cross-Platform Development - Second Edition

Book Image

C# 7 and .NET Core: Modern Cross-Platform Development - Second Edition

Overview of this book

If you want to build powerful cross-platform applications with C# 7 and .NET Core, then this book is for you. First, we’ll run you through the basics of C#, as well as object-oriented programming, before taking a quick tour through the latest features of C# 7 such as tuples, pattern matching, out variables, and so on. After quickly taking you through C# and how .NET works, we’ll dive into the .NET Standard 1.6 class libraries, covering topics such as performance, monitoring, debugging, serialization and encryption. The final section will demonstrate the major types of application that you can build and deploy cross-device and cross-platform. In this section, we’ll cover Universal Windows Platform (UWP) apps, web applications, mobile apps, and web services. Lastly, we’ll look at how you can package and deploy your applications so that they 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 (24 chapters)
C# 7 and .NET Core: Modern Cross-Platform Development - Second Edition
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Working with LINQ to XML


LINQ to XML is a LINQ provider that allows you to query and manipulate XML.

Generating XML using LINQ to XML

Open the console application project or folder named Ch09_Projection.

In the Program.cs file, import the System.Xml.Linq namespace.

In the Main method, at the bottom, write the following statements:

    var productsForXml = db.Products.ToArray(); 
 
    var xml = new XElement("products", 
      from p in productsForXml 
      select new XElement("product", 
        new XAttribute("id", p.ProductID), 
        new XAttribute("price", p.UnitPrice), 
        new XElement("name", p.ProductName))); 
 
    WriteLine(xml.ToString()); 

Run the console application and view the output.

Note the structure of the XML generated matches the elements and attributes that the LINQ to XML statement declaratively described in the preceding code:

    <products> 
      <product id="1" price="18.0000"> 
        &lt...