using System;

using System.Xml;

public class Program

{

    public static void Main()

    {

        XmlTextWriter writer = new XmlTextWriter(Console.Out); //used Console.Out insted of path

        writer.WriteStartDocument(true);

        writer.Formatting = Formatting.Indented;

        writer.Indentation = 4;

​

        writer.WriteStartElement("UserInfo");

            writer.WriteStartElement("Name");

                writer.WriteString("u1"); //(userName);

            writer.WriteEndElement();

            writer.WriteStartElement("TutorName");

                writer.WriteString("t1"); //(tutorName);

            writer.WriteEndElement();

​

        writer.WriteStartElement("CourseData"); //move courseData inside UserInfo element

        writer.WriteEndElement();

        //writer.WriteStartElement("Course Data"); /*This is where the exception points to*/

        //    foreach (UserCourse c in courses)

        //    {

        //        String cn = c.Name;

        //        writer.WriteStartElement(cn);

​

        //        foreach (UserUnit u in c.Units)

        //        {

        //            writer.WriteStartElement(u.Name.ToString());

​

        //            foreach (UserObjective o in u.Objectives)

        //            {

        //                writer.WriteStartElement(o.Name.ToString());

        //                writer.WriteString(o.Score.ToString());

        //                writer.WriteEndElement();

        //           }

        //           writer.WriteEndElement();

        //        }

        //        writer.WriteEndElement();

        //    }

        //writer.WriteEndElement();

​

        writer.Close();

    }

}