C# 7.1 and .NET Core 2.0 - Modern Cross-Platform Development - Third Edition

Reading XML using LINQ to XML

You might want to use LINQ to XML to easily query XML files.

In the LinqWithEFCore project, add an XML file named settings.xml. Modify its contents to look like this:

<?xml version="1.0" encoding="utf-8" ?> 
  <appSettings> 
    <add key="color" value="red" /> 
    <add key="size" value="large" /> 
    <add key="price" value="23.99" /> 
  </appSettings>

Back in the Program class, add the following statements to do these:

• Load the XML file
• Use LINQ to XML to search for an element named appSettings and its descendants named add
• Project the XML into an array of an anonymous type with a Key and Value property
• Enumerate through the array to show the results:

XDocument doc = XDocument.Load("settings.xml"); var appSettings = doc.Descendants("appSettings").Descendants("add").Select(node ...