[XmlRoot("methodCall")]
    public class Exam
    {
        public Exam()
        {           
            values = new ArrayList();
        }

        public string methodCall;
      
        private ArrayList values;
            
        [XmlElement("params", typeof(Value))]
        public ArrayList Settings
        {
            get { return values; }
            set { values = value; }
        }
    }

    public class Value
    {
        public Value()
        {
            questions = new ArrayList();
        }

        private ArrayList questions;

        [XmlArray("param")]
        [XmlArrayItem("value", typeof(Question))]

        public ArrayList Values
        {
            get { return questions; }
            set { questions = value; }
        }
    }
    
    public class Question
    {
        public Question() { }
        private int id;
        private string strng;
        private string[] strukt;

        [System.Xml.Serialization.XmlElementAttribute("int")]
        public int ID        
        {
            get { return id; }
            set { id = value; }
        }

        [System.Xml.Serialization.XmlElementAttribute("string")]
        public string Strng
        {
            get { return strng; }
            set { strng = value; }
        }
        [System.Xml.Serialization.XmlElementAttribute("strukt")]
        public string[] Strukt
        {
            get { return strukt; }
            set { strukt = value; }
        }
    }

<?xml version="1.0" encoding="utf-8"?>
<methodCall>
  <methodCall>examples.getStateName</methodCall>
  <params>
    <param>
      <value>
        <int>123</int>
      </value>
    </param>
  </params>
</methodCall>

  foreach (Object obj in xmlExam.Settings)
            {
                MessageBox.Show(obj.ToString());
            }