using System;

using System.Collections.Generic;

using System.Linq;

using System.Xml.Linq;

public class Program

{

    public static void Main()

    {

        string input = @"<root>

<Settings>

    <A> 1 </A>

    <B> 2 </B>

    <C> 3 </C>

    <D> 4 </D>

</Settings>

<Hello>World</Hello>

<Foo>Bar</Foo>

</root>";

         XDocument xdoc = XDocument.Parse(input);

        var settings = xdoc.Descendants("Settings")

            .Elements()

            .ToDictionary(

                el => el.Name.LocalName,

                el => el.Value 

            );

        settings.Dump();

        //Accessing a Value     

        Console.WriteLine($"Access to Setting A: {settings["A"]}");

    }

}