using System.Collections.Generic;

using System.Xml.Linq;

using System.Xml.XPath;

using System;

​

public class Program

{

    public static void Main()

    {

        const string xml = @"<configuration>

                                <company>

                                  <work worktype=""homeWork"">

                                      <worktime day=""30"" time=""10:28""></worktime>

                                      <worktime day=""25"" time=""10:50""></worktime>

                                   </work>

                                  <work worktype=""officeWork"">

                                      <worktime day=""12"" time=""09:28""></worktime>

                                      <worktime day=""15"" time=""12:28""></worktime>

                                  </work>

                                </company>

                              </configuration>";

​

        var nav = XDocument.Parse(xml).CreateNavigator();

​

        foreach (XPathNavigator work in nav.Select("configuration/company/work"))

        {

            var workType = work.GetAttribute("worktype", string.Empty);

​

            foreach (XPathNavigator worktime in work.Select("worktime"))

            {

                var day = worktime.GetAttribute("day", string.Empty);

                var time = worktime.GetAttribute("time", string.Empty);

​

                Console.WriteLine($"{workType}, {day}, {time}");

            }

        }

    }

}