Простой парсин XML с использованием DataSet

server-list.xml

<?xml version="1.0" standalone="yes"?>
<servers>
	<server value="server-1">
		<device address="1" mode="1" active="true"/>
		<device address="2" mode="3" active="true"/>
		<device address="3" mode="1" active="true"/>
		<device address="4" mode="3" active="true"/>
	</server>
  
	<server value="server-2">
		<device address="1" mode="1" active="true"/>
		<device address="2" mode="3" active="true"/>
		<device address="3" mode="1" active="true"/>
		<device address="4" mode="3" active="true"/>
	</server>
  
	<server value="server-3">
		<device address="1" mode="1" active="true"/>
		<device address="2" mode="2" active="true"/>
		<device address="3" mode="1" active="true"/>
		<device address="4" mode="2" active="true"/>
		<device address="5" mode="1" active="true"/>
		<device address="6" mode="2" active="true"/>
		<device address="7" mode="1" active="true"/>
		<device address="8" mode="2" active="true"/>
		<device address="9" mode="1" active="true"/>
		<device address="10" mode="1" active="true"/>
		<device address="11" mode="1" active="true"/>
		<device address="12" mode="1" active="true"/>
		<device address="13" mode="1" active="true"/>
		<device address="14" mode="1" active="true"/>
		<device address="15" mode="1" active="true"/>
		<device address="16" mode="1" active="true"/>
	</server>
 </servers>

XmlParse.cs

using System;
using System.Collections.Generic;
using System.Data;
using System.IO;

namespace CONSOLE_TEST_SOLUTION
{
    class Program
    {
        static void Main(string[] args)
        {
            DataSet dataSet = new DataSet();

            string filePath = ("" + Directory.GetCurrentDirectory() + "\\server-list.xml");

            List<DataRow> serverList1 = new List<DataRow>();
            List<DataRow> serverList2 = new List<DataRow>(); 
            List<DataRow> serverList3 = new List<DataRow>();

            if(!File.Exists(filePath))
            {
                Console.WriteLine("Файл отсутствует");
            }
            else
            {
                Console.WriteLine("Файл server-list.xml найден");

                dataSet.ReadXml(filePath);

                Console.WriteLine("DataSet заполнен.");

                foreach(DataRow row in dataSet.Tables["device"].Rows)
                {
                    switch(row[3])
                    {
                        case 0:
                            serverList1.Add(row);
                            break;
                        case 1:
                            serverList2.Add(row);
                            break;
                        case 2:
                            serverList3.Add(row);
                            break;
                    }
                }

                Console.WriteLine("\n\nServer list 1 \nAddr     Mode    Active      Server");

                foreach (DataRow row in serverList1)
                    for (var i = 0; i < dataSet.Tables["device"].Columns.Count; i++)
                        if(i != 3)
                            Console.Write(row[i] + "        ");
                        else
                            Console.WriteLine(((int)row[i]) + 1 + "        ");

                Console.WriteLine("\n\nServer list 2 \nAddr     Mode    Active      Server");

                foreach (DataRow row in serverList2)
                    for (var i = 0; i < dataSet.Tables["device"].Columns.Count; i++)
                        if (i != 3)
                            Console.Write(row[i] + "        ");
                        else
                            Console.WriteLine(((int)row[i]) + 1 + "        ");

                Console.WriteLine("\n\nServer list 3 \nAddr     Mode    Active      Server");

                foreach (DataRow row in serverList3)
                    for (var i = 0; i < dataSet.Tables["device"].Columns.Count; i++)
                        if (i != 3)
                            Console.Write(row[i] + "        ");
                        else
                            Console.WriteLine(((int)row[i]) + 1 + "        ");
            }

            Console.ReadKey();
        }
    }
}