на экране пара "идентификатор - значение"

gistfile1.txt

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Collections;
using System.Reflection;

namespace ConsoleApplication17
{
    class Program
    {
        static void Main(string[] args)
        {
            Student s = new Student();
            foreach (var x in s)
            {
                Console.WriteLine(x); // на экране пара "идентификатор - значение"
            }
        }
    }

    public class StrudentMemberInfo
    {
        public String Name
        {
            get;
        }

        public String Type
        {
            get;
        }

        public String Value
        {
            get;
        }

        public StrudentMemberInfo(String name, String type, String value)
        {
            Name = name;
            Type = type;
            Value = value;
        }

        public override String ToString()
        {
            return "Name: " + Name + "; Type: " + Type + "; Value: " + Value;
        }
    }

    public class ObjectIsNotStudent : Exception
    {
        public ObjectIsNotStudent() : base() { }
    }

    public class Student : IComparable, IEnumerable
    {
        private String name;

        private String fatherName;

        private String surname;

        private DateTime birthday;

        private String address;

        private String phoneNumber;

        private static int courseWorkCount = 5;

        private static int creditCount = 5;

        private static int examCount = 5;

        private int[] courseWorkMarks = new int[courseWorkCount];

        private int[] creditMarks = new int[creditCount];

        private int[] examMarks = new int[examCount];

        IEnumerator IEnumerable.GetEnumerator()
        {
            return (IEnumerator)GetEnumerator();
        }

        public StudentEnum GetEnumerator()
        {
            return new StudentEnum(this);
        }

        public int CompareTo(Object obj)
        {
            Student temp = obj as Student;

            if (temp == null)
            {
                throw new ObjectIsNotStudent();
            }

            int diff = 0;

            diff = Birthday.Year - temp.Birthday.Year;

            if (diff != 0)
                return diff;

            diff = Birthday.Month - temp.Birthday.Month;

            if (diff != 0)
                return diff;

            diff = Birthday.Day - temp.Birthday.Day;

            return diff;
        }

        public class SortByName : IComparer
        {
            public int Compare(Object obj1, Object obj2)
            {
                Student s1 = obj1 as Student;
                Student s2 = obj2 as Student;

                if (s1 == null)
                {
                    throw new ObjectIsNotStudent();
                }

                if (s2 == null)
                {
                    throw new ObjectIsNotStudent();
                }

                return String.Compare(s1.Name, s2.Name);
            }
        }

        public class SortBySurname : IComparer
        {
            public int Compare(Object obj1, Object obj2)
            {
                Student s1 = obj1 as Student;
                Student s2 = obj2 as Student;

                if (s1 == null)
                {
                    throw new ObjectIsNotStudent();
                }

                if (s2 == null)
                {
                    throw new ObjectIsNotStudent();
                }

                return String.Compare(s1.Surname, s2.Surname);
            }
        }

        public class SortByFatherName : IComparer
        {
            public int Compare(Object obj1, Object obj2)
            {
                Student s1 = obj1 as Student;
                Student s2 = obj2 as Student;

                if (s1 == null)
                {
                    throw new ObjectIsNotStudent();
                }

                if (s2 == null)
                {
                    throw new ObjectIsNotStudent();
                }

                return String.Compare(s1.FatherName, s2.FatherName);
            }
        }

        public String Name
        {
            get
            {
                return name;
            }
            set
            {
                setName(value);
            }
        }

        public String FatherName
        {
            get
            {
                return fatherName;
            }
            set
            {
                setFatherName(value);
            }
        }

        public String Surname
        {
            get
            {
                return surname;
            }
            set
            {
                setSurname(value);
            }
        }

        public DateTime Birthday
        {
            get
            {
                return getBirthday();
            }
            set
            {
                setBirthday(value);
            }
        }

        public String Address
        {
            get { return getAddress(); }
            set { setAddress(value); }
        }

        public String Phone
        {
            get { return getPhoneNumber(); }
            set { setPhoneNumber(value); }
        }

        public Student(String name, String fatherName, String surname,
                        DateTime birthday, String address, String phoneNumber)
        {
            setName(name);
            setFatherName(fatherName);
            setSurname(surname);
            setBirthday(birthday);
            setAddress(address);
            setPhoneNumber(phoneNumber);

            fillDefaultMarkValues();
        }

        public Student() : this("Unknown", "Unknown", "Unknown", new DateTime(1900, 1, 1), "", "") { }

        public Student(String name, String fatherName, String surname) :
            this(name, fatherName, surname, new DateTime(1900, 1, 1), "", "")
        { }

        public void setName(String name)
        {
            this.name = name;
        }

        public void setFatherName(String fatherName)
        {
            this.fatherName = fatherName;
        }

        public void setSurname(String surname)
        {
            this.surname = surname;
        }

        public void setBirthday(DateTime birthday)
        {
            this.birthday = birthday;
        }

        public void setAddress(String address)
        {
            this.address = address;
        }

        public void setPhoneNumber(String phoneNumber)
        {
            this.phoneNumber = phoneNumber;
        }

        public void setCourseWorkMark(int mark, int index)
        {
            if ((index > courseWorkCount - 1) || (index < 0))
            {
                return;//an exception should be here
            }

            courseWorkMarks[index] = mark;
        }

        public void setCreditkMark(int mark, int index)
        {
            if ((index > creditCount - 1) || (index < 0))
            {
                return;//an exception should be here
            }

            creditMarks[index] = mark;
        }

        public void setExamMark(int mark, int index)
        {
            if ((index > examCount - 1) || (index < 0))
            {
                return;//an exception should be here
            }

            examMarks[index] = mark;
        }

        public String getName()
        {
            return name;
        }

        public String getFatherName()
        {
            return fatherName;
        }

        public String getSurname()
        {
            return surname;
        }

        public DateTime getBirthday()
        {
            return birthday;
        }

        public String getAddress()
        {
            return address;
        }

        public String getPhoneNumber()
        {
            return phoneNumber;
        }

        public int getCourseWorkMark(int index)
        {
            if ((index > courseWorkCount - 1) || (index < 0))
            {
                return 0;//an exception should be here
            }

            return courseWorkMarks[index];
        }

        public int getCreditMark(int index)
        {
            if ((index > examCount - 1) || (index < 0))
            {
                return 0;//an exception should be here
            }

            return examMarks[index];
        }

        public int getExamMark(int index)
        {
            if ((index > examCount - 1) || (index < 0))
            {
                return 0;//an exception should be here
            }

            return examMarks[index];
        }

        public void showStudentInfo()
        {
            Console.WriteLine("Name: " + name);
            Console.WriteLine("Father name: " + fatherName);
            Console.WriteLine("Surname: " + surname);
            Console.WriteLine("Birthday: " + birthday.ToString());
            Console.WriteLine("Address: " + address);
            Console.WriteLine("Phone number: " + phoneNumber);

            showMarks();
        }

        public int calculateAvarageMark()
        {
            int summMark = 0;
            int divider = 0;

            calculateCreditMarkSumm(ref summMark, ref divider);
            calculateCourseWorkMarkSumm(ref summMark, ref divider);
            calculateExamMarkSumm(ref summMark, ref divider);

            if (divider == 0)
                return 0;
            else
                return summMark / divider;
        }

        public void fillCreditMarkArrayWithMark(int mark)
        {
            for (int i = 0; i < creditMarks.Length; i++)
            {
                setCreditkMark(mark, i);
            }
        }

        public void fillCourseWorkMarkArrayWithMark(int mark)
        {
            for (int i = 0; i < courseWorkMarks.Length; i++)
            {
                setCourseWorkMark(mark, i);
            }
        }

        public void fillExamMarkArrayWithMark(int mark)
        {
            for (int i = 0; i < examMarks.Length; i++)
            {
                setExamMark(mark, i);
            }
        }

        private void calculateCreditMarkSumm(ref int summMark, ref int divider)
        {
            divider++;

            for (int i = 0; i < creditMarks.Length; i++)
            {
                summMark += creditMarks[i];
            }

        }

        private void calculateCourseWorkMarkSumm(ref int summMark, ref int divider)
        {
            divider++;

            for (int i = 0; i < courseWorkMarks.Length; i++)
            {
                summMark += courseWorkMarks[i];
            }
        }

        private void calculateExamMarkSumm(ref int summMark, ref int divider)
        {
            divider++;

            for (int i = 0; i < examMarks.Length; i++)
            {
                summMark += examMarks[i];
            }
        }

        private void showMarks()
        {
            showCourseWorkMarks();
            showCreditkMarks();
            showExamMarks();
        }

        private void showCourseWorkMarks()
        {
            Console.Write("Couse work marks: ");

            for (int i = 0; i < courseWorkMarks.Length; i++)
            {
                Console.Write("{0, 4}", courseWorkMarks[i]);
            }

            Console.WriteLine();
        }

        private void showCreditkMarks()
        {
            Console.Write("Credit marks: ");

            for (int i = 0; i < creditMarks.Length; i++)
            {
                Console.Write("{0, 4}", creditMarks[i]);
            }

            Console.WriteLine();

        }

        private void showExamMarks()
        {
            Console.Write("Exam marks: ");

            for (int i = 0; i < examMarks.Length; i++)
            {
                Console.Write("{0, 4}", examMarks[i]);
            }

            Console.WriteLine();

        }

        private void fillDefaultMarkValues()
        {

            fillArrayWithZero(courseWorkMarks);
            fillArrayWithZero(creditMarks);
            fillArrayWithZero(examMarks);
        }

        private void fillArrayWithZero(int[] markArray)
        {

            for (int i = 0; i < markArray.Length; i++)
                markArray[i] = 0;
        }
    }

    public class StudentEnum : IEnumerator
    {
        private StrudentMemberInfo[] _items;

        private int position = -1;

        public StudentEnum(Student student)
        {
            Type classType = typeof(Student);

            FieldInfo[] fields = classType.GetFields(BindingFlags.Public | BindingFlags.Instance);

            PropertyInfo[] properties = classType.GetProperties();

            MethodInfo[] methods = classType.GetMethods();

            int itemCount = ((fields == null) ? 0 : fields.Length) + ((properties == null) ? 0 : properties.Length)
                                + ((methods == null) ? 0 : methods.Length);

            _items = new StrudentMemberInfo[itemCount];

            for (int i = 0; i < fields.Length; i++)
            {
                _items[i] = new StrudentMemberInfo(fields[i].Name, "field", fields[i].GetValue(student).ToString());
            }

            int offset = fields.Length;

            for (int i = 0; i < properties.Length; i++)
            {
                if (properties[i].CanRead)
                {
                    _items[i + offset] = new StrudentMemberInfo(properties[i].Name, "property", properties[i].GetValue(student).ToString());
                }
                else
                {
                    _items[i + offset] = new StrudentMemberInfo(properties[i].Name, "property", "");
                }
            }

            offset += properties.Length;

            for (int i = 0; i < methods.Length; i++)
            {
                _items[i + offset] = new StrudentMemberInfo(methods[i].Name, "method", "");
            }

        }

        public Boolean MoveNext()
        {
            position++;
            return (position < _items.Length);
        }

        public void Reset()
        {
            position = -1;
        }

        Object IEnumerator.Current
        {
            get
            {
                return Current;
            }
        }

        public StrudentMemberInfo Current
        {
            get
            {
                try
                {
                    return _items[position];
                }
                catch (IndexOutOfRangeException)
                {
                    throw new InvalidOperationException();
                }
            }
        }
    }
}