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C# 8.0 and .NET Core 3.0 – Modern Cross-Platform Development

You're reading from   C# 8.0 and .NET Core 3.0 – Modern Cross-Platform Development Build applications with C#, .NET Core, Entity Framework Core, ASP.NET Core, and ML.NET using Visual Studio Code

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Product type Paperback
Published in Oct 2019
Publisher Packt
ISBN-13 9781788478120
Length 818 pages
Edition 4th Edition
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Author (1):
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Mark J. Price Mark J. Price
Author Profile Icon Mark J. Price
Mark J. Price
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Toc

Table of Contents (21) Chapters Close

1. Hello, C#! Welcome, .NET! FREE CHAPTER 2. Speaking C# 3. Controlling Flow and Converting Types 4. Writing, Debugging, and Testing Functions 5. Building Your Own Types with Object-Oriented Programming 6. Implementing Interfaces and Inheriting Classes 7. Understanding and Packaging .NET Types 8. Working with Common .NET Types 9. Working with Files, Streams, and Serialization 10. Protecting Your Data and Applications 11. Working with Databases Using Entity Framework Core 12. Querying and Manipulating Data Using LINQ 13. Improving Performance and Scalability Using Multitasking 14. Practical Applications of C# and .NET 15. Building Websites Using ASP.NET Core Razor Pages 16. Building Websites Using the Model-View-Controller Pattern 17. Building Websites Using a Content Management System 18. Building and Consuming Web Services 19. Building Intelligent Apps Using Machine Learning 20. Building Windows Desktop Apps 21. Building Cross-Platform Mobile Apps Using Xamarin.Forms

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

Let's create a method to convert the Products table into XML.

  1. In Program.cs, import the System.Xml.Linq namespace.
  2. Create a method to output the products in XML format, as shown in the following code:
    static void OutputProductsAsXml()
    {
      using (var db = new Northwind())
      {
        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());
      }
    }
  3. In Main, comment the previous method call and call OutputProductsAsXml.
  1. Run the console application, view the result, and note that the structure of the XML generated matches...
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