04.SoftUni

CurrentStudent.cs

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

namespace _04.SoftUni
{
    class CurrentStudent:Student
    {
        private string course;
        public string Course
        {
            get
            {
                return this.course;
            }
            set
            {
                this.course = value;
            }
        }

        public CurrentStudent(string studentNumber,double averageGrade,string course):base(studentNumber,averageGrade)
        {
            this.Course = course;
        }


    }
}

DropOutStudent.cs

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

namespace _04.SoftUni
{
    class DropoutStudent:Student
    {
        private string dropOutReason;

        public string DropOutReason
        {
            get
            {
                return this.dropOutReason;
            }
            set
            {
                if (string.IsNullOrEmpty(value))
                {
                    throw new ArgumentNullException();
                }
                else
                {
                    this.dropOutReason = value;
                }
            }
        }

        public DropoutStudent(string studentNumber,double averageGrade,string dropOutReason):base(studentNumber,averageGrade)
        {
            this.DropOutReason = dropOutReason;
        }

        public static void Reapply(DropoutStudent dropOutStudent)
        {
            Console.WriteLine("Student Full Name: {0}.\nStudent Age: {1}.\nStudent Number: {2}.\nStudent Average Grade: {3}.\nReason for dropOut: {4}.",dropOutStudent.FirstName +' '+ dropOutStudent.LastName,
                dropOutStudent.Age,dropOutStudent.StudentNumber,dropOutStudent.AverageGrade,dropOutStudent.DropOutReason);
        }
    }
}

GraduatedStudent.cs

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

namespace _04.SoftUni
{
    class GraduatedStudent:Student
    {
        public GraduatedStudent(string studentNUmber,double averageGrade):base(studentNUmber,averageGrade)
        {

        }
    }
}

JuniorTrainer.cs

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

namespace _04.SoftUni
{
    class JuniorTrainer:Trainer
    {
        public JuniorTrainer(string firstName,string secondName,int age):base(firstName,secondName,age)
        {

        }
    }
}

OnlineStudent.cs

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

namespace _04.SoftUni
{
    class OnlineStudent:CurrentStudent
    {
        public OnlineStudent(string studentNumber,double averageGrade,string course):base(studentNumber,averageGrade,course)
        {

        }
    }
}

OnSiteStudent.cs

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

namespace _04.SoftUni
{
    class OnSiteStudent:CurrentStudent
    {
        public int NumberOfVisits { get; set; }

        public OnSiteStudent(string studentNumber,double averageGrade,string course,int visits):base(studentNumber,averageGrade,course)
        {
            this.NumberOfVisits = visits;
        }
    }
}

Person.cs

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

namespace _04.SoftUni
{
    public class Person
    {
        private string firstName;
        private string lastName;
        private int age;

        public string FirstName
        {
            get
            {
                return this.firstName;
            }
            set
            {
                if (string.IsNullOrEmpty(value))
                {
                    throw new ArgumentNullException();
                }
                this.firstName = value;
            }
        }
        public string LastName
        {
            get
            {
                return this.lastName;
            }
            set
            {
                if (string.IsNullOrEmpty(value))
                {
                    throw new ArgumentNullException();
                }
                this.lastName = value;
            }
        }
        public int Age
        {
            get
            {
                return this.age;
            }
            set
            {
                if (value<18)
                {
                    throw new ArgumentException("Student must be more than 18 years.");
                }
                this.age = value;
            }
        }

        public Person(string firstName,string secondName,int age)
        {
            this.FirstName = firstName;
            this.LastName = secondName;
            this.Age = age;
        }
        public Person():this("Georgi","Nikolov",18)
        {

        }
    }
}

SeniorTrainer.cs

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

namespace _04.SoftUni
{
    class SeniorTrainer:Trainer
    {
        public SeniorTrainer(string firstName, string secondName, int age):base(firstName,secondName,age)
        {

        }
        public void DeleteCourse(string course)
        {
            if (courses.Contains(course))
            {
                Console.WriteLine("The {0} course has been deleted.", course);
                courses.Remove(course);
            }
            else
            {
                throw new ArgumentException("Course with that name doest not exist.");
            }
        }
    }
}

Student.cs

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

namespace _04.SoftUni
{
    class Student:Person
    {
        private string studentNumber;
        private double averageGrade;

        public string StudentNumber
        {
            get
            {
                return this.studentNumber;
            }
            set
            {
                if (string.IsNullOrEmpty(value))
                {
                    throw new ArgumentNullException();
                }
                else
                {
                    this.studentNumber = value;
                }
            }
        }
        public double AverageGrade
        {
            get
            {
                return this.averageGrade;
            }
            set
            {
                if (value < 2 || value > 6)
                {
                    throw new ArgumentException("Grade must be in range 2-6");
                }
                else
                {
                    this.averageGrade = value;
                }
            }
        }

        public Student(string firstName, string secondName, int age):base(firstName,secondName,age)
        {
            
        }
        public Student(string studentNumber,double averageGrade)
        {
            this.StudentNumber = studentNumber;
            this.AverageGrade = averageGrade;
        }
    }
}

SulsTest.cs

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

namespace _04.SoftUni
{
    class SulsTest
    {
        static void Main(string[] args)
        {
            //Student s = new Student("12314", 4.5);
            //GraduatedStudent d = new GraduatedStudent("123541", 3.5);
            //DropoutStudent a = new DropoutStudent("5125544", 2.4, "Low Results");

            //DropoutStudent.Reapply(a);


            List<object> list = new List<object>();
            list.Add(new Student("1231254", 4.5));
            list.Add(new Trainer("Gosho", "Toshev", 19));
            list.Add(new CurrentStudent("5126677", 6.00, "Math"));
            list.Add(new CurrentStudent("5121377", 5.50, "Math"));
            list.Add(new CurrentStudent("3126647", 5.50, "Math"));
            list.Add(new CurrentStudent("1021333", 6.00, "Math"));
            list.Add(new CurrentStudent("2561346", 4.00, "Math"));
            list.Add(new CurrentStudent("3031522", 5.50, "Math"));

            var result = list.Where(e => e is CurrentStudent).Cast<CurrentStudent>().ToList().OrderBy(d => d.AverageGrade);
            foreach (var item in result)
            {
                Console.WriteLine("Student Name: {0}",item.FirstName + ' '+item.LastName);
                Console.WriteLine("Age: {0}",item.Age);
                Console.WriteLine("Student Number: {0}",item.StudentNumber);
                Console.WriteLine("Average Grade: {0}",item.AverageGrade);
                Console.WriteLine("Course that student visits: {0}",item.Course);
                Console.WriteLine();
            }
        }
    }
}

Trainer.cs

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

namespace _04.SoftUni
{
   public class Trainer:Person
    {
        protected List<string> courses { get; set; }

        public Trainer(string firstName,string secondName,int age):base(firstName,secondName,age)
        {
            courses = new List<string>();
        }

        public void CreateCourse(string course)
        {
            courses.Add(course);
            Console.WriteLine("The {0} course has been created.",course);
        }
    }
}