using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Xml.Serialization;

using System.Xml;

using System.IO;

using System.Diagnostics;

using System.Collections.ObjectModel;

using System.Threading;

using System.ComponentModel;

using System.Xml.Linq;

​

// https://stackoverflow.com/questions/44993196/create-dynamic-xml-using-xelement-in-c-sharp/44993286#44993286

​

    public class Parameter

    {

        public string ParameterName { get; set; }

    }

​

    class TestClass

    {

        public static void Test()

        {

            var Parameters = new List<Parameter>

            {

                new Parameter { ParameterName = "co" },

                new Parameter { ParameterName = "o2" },

                new Parameter { ParameterName = "foo" },

                new Parameter { ParameterName = "bar" },

            };

​

            var CurrentData = 2;

​

            // Allocate the XDocument and add an XML declaration.  

            XDocument RejectedXmlList = new XDocument(new XDeclaration("1.0", "utf-8", null));

​

            // At this point RejectedXmlList.Root is still null, so add a unique root element.

            RejectedXmlList.Add(new XElement("Rejectedparameters"));

​

            // Add elements for each Parameter to the root element

            foreach (Parameter Myparameter in Parameters)

            {

                if (true)

                {

                    XElement xelement = new XElement(Myparameter.ParameterName, CurrentData.ToString());

                    RejectedXmlList.Root.Add(xelement);

                }

            }

​

            Console.WriteLine(RejectedXmlList);

        }

    }

    public class Program

    {

        public static void Main()

        {

            Console.WriteLine("Environment version: " + Environment.Version);

            Console.WriteLine("");

            TestClass.Test();

        }

    }

​