I have this object

var myObj = new Root
{
    Items = new List<Items>
    {
        new Items { MyValue1 = "test", MyValue2 = 22 },
        new Items { MyValue1 = "test2", MyValue2 = 44 },
    }
};

with

public class Root
{
    public List<Items> Items { get; set; }
}

public class Items
{
    public string MyValue1 { get; set; }
    public int MyValue2 { get; set; }
}

I can serialize it like this :

<Root>
    <Items>
        <Items>
            <MyValue1>test</MyValue1>
            <MyValue2>22</MyValue2>
        </Items>
        <Items>
            <MyValue1>test2</MyValue1>
            <MyValue2>44</MyValue2>
        </Items>
    </Items>
</Root>

But I would like to serialize like :

<Items>
    <MyValue1>test</MyValue1>
    <MyValue2>22</MyValue2>
</Items>
<Items>
    <MyValue1>test2</MyValue1>
    <MyValue2>44</MyValue2>
</Items>

But I can’t find a way to do this

This is the reproduction code :

class Program
{
    static void Main(string[] args)
    {
        var myObj = new Root
        {
            Items = new List<Items>
            {
                new Items { MyValue1 = "test", MyValue2 = 22 },
                new Items { MyValue1 = "test2", MyValue2 = 44 },
            }
        };

        var serializer = new XmlSerializer(typeof(Root));
        var ms = new MemoryStream();
        var settings = new XmlWriterSettings { Encoding = new UTF8Encoding(false), OmitXmlDeclaration = true };
        using var xmlWriter = XmlWriter.Create(ms, settings);
        var ns = new XmlSerializerNamespaces();
        ns.Add(string.Empty, string.Empty);
        serializer.Serialize(xmlWriter, myObj, ns);

        var xmlDebug = Encoding.UTF8.GetString(ms.ToArray());

        var result = @"<?xml version=""1.0"" encoding=""utf-8""?><Items><MyValue1>test</MyValue1><MyValue2>22</MyValue2></Items><Items><MyValue1>test2</MyValue1><MyValue2>44</MyValue2></Items>";
        Assert.AreEqual(result, xmlDebug);

    }
}

public class Root
{
    public List<Items> Items { get; set; }
}

public class Items
{
    public string MyValue1 { get; set; }
    public int MyValue2 { get; set; }
}