How to properly deserialize XML in C#?

Question

C++ / C#

Please help me, I am learning to work with XML format in c#. There were problems deserializing the file. With direct deserialization, an error is displayed (screen below )
code:

using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Xml;
using System.Xml.Serialization;
using System.IO;

namespace Test
{
    public class obj
    {
        string ProjectName;
        string MemberRole;
        string MemberName;

        public obj()
        {

        }
    }
    public class XmlToXml
    {
        public string path;
        public XmlDocument CurDoc = new XmlDocument();
        public XmlNode DocRoot;
        public void PutIn(string path)
        {
            this.path = path;
            CurDoc.Load(path);
            DocRoot = CurDoc.DocumentElement;
        }
        public void Deserialization()
        {
            XmlSerializer Deserializator = new XmlSerializer(typeof(obj[]));
             using (FileStream origin = new FileStream(path, FileMode.Open))
             {
                 obj[] ObjArray = (obj[])Deserializator.Deserialize(origin);
             }
        }

    }
    class Program
    {
        static void Main(string[] args)
        {
            XmlToXml a = new XmlToXml();
            a.PutIn(@"C:\Users\Даниил\source\repos\4-Задачи\TaskFromTheInterviewXml1.0Tests\TestXmlL1.xml");
            a.Deserialization();
        }
    }
}

Xml File:

<projects>
    <project name="xml">
        <member role="developer" name="Fedya"/>
  <member role="manager" name="Ivan"/>
  <member role="manager" name="Fedya"/>
    </project>
</projects>

Answer 1

It’s better to start with taking your object and serializing it to xml and comparing it with what is published ...
Well, or “lazy” ask VS to generate classes from xml ( Edit -> PasteSpecial) and then compare it with your class

Answer 2

I want to add that such deserialization is not recommended in principle, because it allows the injection of malicious code into your program. It is recommended to parse the file and construct the object accordingly.