using System;

using System.Collections.Generic;

using System.Xml.Serialization;

using System.IO;

public class Program

{

    public static void Main()

    {

        var xml = """

            <?xml version="1.0" encoding="utf-8"?>

            <Main>

                <Group>

                    <NV>BasicPars</NV>

                    <Property>

                        <NV>Name</NV>

                        <Value>wzorzec</Value>

                    </Property>

                    <Property>

                        <NV>UseFixedSizes</NV>

                        <Value>False</Value>

                    </Property>

                </Group>

                <Group>EventPars</Group>

                <Group>Registers</Group>

            </Main>

            """;

        var result = new XmlSerializer(typeof(Main)).Deserialize(new StringReader(xml)) ;

        result.Dump();

    }

}

​

public class Property { 

​

    [XmlElement(ElementName="NV")] 

    public string NV { get; set; } 

​

    [XmlElement(ElementName="Value")] 

    public string Value { get; set; } 

}

​

public class Group { 

​

    [XmlElement(ElementName="NV")] 

    public string NV { get; set; } 

​

    [XmlElement(ElementName="Property")] 

    public List<Property> Property { get; set; }

    [XmlText]

    public string InnerText { get; set; }

}

​

[XmlRoot(ElementName="Main")]

public class Main { 

​

    [XmlElement(ElementName="Group")] 

    public List<Group> Group { get; set; } 

}