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C# 6 and .NET Core 1.0

C# 6 and .NET Core 1.0

3.8 (11)
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C# 6 and .NET Core 1.0

C# 6 and .NET Core 1.0

3.8 (11)

Overview of this book

With the release of .NET Core 1.0, you can now create applications for Mac OS X and Linux, as well as Windows, using the development tools you know and love. C# 6 and .NET Core 1.0 has been divided into three high-impact sections to help start putting these new features to work. First, we'll run you through the basics of C#, as well as object-orient programming, before taking a quick tour through the latest features of C# 6 such as string interpolation for easier variable value output, exception filtering, and how to perform static class imports. We'll also cover both the full-feature, mature .NET Framework and the new, cross-platform .NET Core. After quickly taking you through C# and how .NET works, we'll dive into the internals of the .NET class libraries, covering topics such as performance, monitoring, debugging, internationalization, serialization, and encryption. We'll look at Entity Framework Core 1.0 and how to develop Code-First entity data models, as well as how to use LINQ to query and manipulate that data. The final section will demonstrate the major types of applications that you can build and deploy cross-device and cross-platform. In this section, we'll cover Universal Windows Platform (UWP) apps, web applications, and web services. Lastly, we'll help you build a complete application that 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 (20 chapters)
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19
Index

Working with LINQ to XML


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

Generating XML using LINQ to XML

Add a new console application project named Ch09_LINQandXML. Add a new ADO.NET Entity Data Model item named Northwind. Use Code First from database, connect to the Northwind database on the server named (localdb)\mssqllocaldb, and select all the tables.

Import System.Xml.Linq. In the Main method, write the following statements:

var db = new Northwind();
var products = db.Products.ToArray();

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

Console.WriteLine(xml.ToString());

Run the application. Notice that the structure of the XML generated matches the elements and attributes that the LINQ to XML statement declaratively...

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