Question

Maintain a list

Create an equipment – mobile and immobile

Delete

Move – mobile and immobile (this is going to update certain properties in equipment)

List all equipment. (just the basic details – name and description)

Show details (all details – including distance moved till date and maintenance cost)

List all mobile equipment -> Use Lambda

List all Immobile equipment -> Use Lambda

 List all equipment that have not been moved till now

Delete all equipment

Delete all immobile equipment

11Delete all mobile equipment

 Create a console application for the above scenario meeting all requirements. Use in-memory objects for storing data. Also make sure to validate user input and show appropriate messages for invalid inputs.

 

Try using Lambda, Linq, Select, Where query etc. for this assignment

Answer 1

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


namespace Q180505
{
    class Equipment
    {


        private string name;
        private string description;
        private double maintenanceCost;


        /// <summary>
        /// Constructor
        /// </summary>
        public Equipment() { }
        /// <summary>
        /// Constructor with arguments
        /// </summary>
        /// <param name="name"></param>
        /// <param name="description"></param>
        /// <param name="maintenanceCost"></param>
        public Equipment(string name, string description, double maintenanceCost)
        {
            this.name = name;
            this.description = description;
            this.maintenanceCost = maintenanceCost;
        }


        public string Name
        {
            get { return name; }
            set { name = value; }
        }
        public string Description
        {
            get { return description; }
            set { description = value; }
        }


        public double MaintenanceCost
        {
            get { return maintenanceCost; }
            set { maintenanceCost = value; }
        }


    }


    class Mobile : Equipment
    {
        private int distanceMoved;
        /// <summary>
        /// Constructor with arguments
        /// </summary>
        /// <param name="name"></param>
        /// <param name="description"></param>
        /// <param name="maintenanceCost"></param>
        public Mobile(string name, string description, double maintenanceCost)
            : base(name, description, maintenanceCost)
        {
            this.distanceMoved = 0;
        }


        public int DistanceMoved
        {
            get { return distanceMoved; }
            set { distanceMoved = value; }
        }


    }


    class Immobile : Equipment
    {
        /// <summary>
        /// Constructor with arguments
        /// </summary>
        /// <param name="name"></param>
        /// <param name="description"></param>
        /// <param name="maintenanceCost"></param>
        public Immobile(string name, string description, double maintenanceCost)
            : base(name, description, maintenanceCost)
        {


        }
    }




    class Program
    {
        static void Main(string[] args)
        {
            List<Equipment> equipments = new List<Equipment>();


            int choice = -1;
            while (choice != 12)
            {
                Console.WriteLine("1. Create an equipment – mobile and immobile");
                Console.WriteLine("2. Delete");
                Console.WriteLine("3. Move – mobile");
                Console.WriteLine("4. List all equipment");
                Console.WriteLine("5. Show details");
                Console.WriteLine("6. List all mobile equipment");
                Console.WriteLine("7. List all Immobile equipment");
                Console.WriteLine("8. List all equipment that have not been moved till now");
                Console.WriteLine("9. Delete all equipment");
                Console.WriteLine("10. Delete all immobile equipment");
                Console.WriteLine("11. Delete all mobile equipment");
                Console.WriteLine("12. Exit");
                Console.Write("Your choice: ");
                if (!int.TryParse(Console.ReadLine(), out choice))
                {
                    Console.WriteLine("\nSelect correct menu item.\n");
                }
                else
                {
                    switch (choice)
                    {
                        case 1://Create an equipment – mobile and immobile
                            createEquipment(equipments);
                            break;
                        case 2:
                            deleteEquipment(equipments);
                            break;
                        case 3:
                            moveEquipment(equipments);
                            break;
                        case 4:
                            listAllEquipment(equipments);
                            break;
                        case 5:
                            showdetails(equipments);
                            break;
                        case 6:
                            listAllMobileEquipment(equipments);
                            break;
                        case 7:
                            listAllImmobileEquipment(equipments);
                            break;
                        case 8:
                            listAllEquipmentNotBeenMovedTillNow(equipments);
                            break;
                        case 9:
                            //Delete all equipment
                            equipments.Clear();
                            Console.WriteLine("\nAll equipments have been deleted.\n");
                            break;
                        case 10:
                            equipments.RemoveAll(e => e is Immobile);
                            Console.WriteLine("\nAll Immobile equipments have been deleted.\n");
                            break;
                        case 11:
                            equipments.RemoveAll(e => e is Mobile);
                            Console.WriteLine("\nAll Mobile equipments have been deleted.\n");
                            break;
                        case 12:
                            //exit
                            break;
                        default:
                            Console.WriteLine("\nSelect correct menu item.\n");
                            break;
                    }
                }
            }
        }
        /// <summary>
        /// Create an equipment – mobile and immobile
        /// </summary>
        /// <param name="equipments"></param>
        static void createEquipment(List<Equipment> equipments)
        {
            string name;
            string description;
            double maintenanceCost;
            int choice;
            Console.WriteLine("1. Create mobile equipment");
            Console.WriteLine("2. Create immobile equipment");
            Console.Write("Your choice: ");
            if (!int.TryParse(Console.ReadLine(), out choice) || choice < 1 || choice > 2)
            {
                Console.WriteLine("\nSelect correct menu item.\n");
            }
            else
            {
                Console.Write("Enter the name: ");
                name = Console.ReadLine();
                Console.Write("Enter the description: ");
                description = Console.ReadLine();
                Console.Write("Enter the maintenance cost: ");
                if (!double.TryParse(Console.ReadLine(), out maintenanceCost) || maintenanceCost < 0)
                {
                    Console.WriteLine("\nEnter correct the maintenance cost>0.\n");
                }
                if (choice == 1)
                {
                    equipments.Add(new Mobile(name, description, maintenanceCost));
                }
                if (choice == 2)
                {
                    equipments.Add(new Immobile(name, description, maintenanceCost));
                }
                Console.WriteLine("\nA new equipment has been added.\n");
            }


        }
        /// <summary>
        /// Delete equipment
        /// </summary>
        /// <param name="equipments"></param>
        static void deleteEquipment(List<Equipment> equipments)
        {
            if (equipments.Count > 0)
            {
                listAllEquipment(equipments);
                int selectedMobileEquipment = -1;
                Console.Write("Select the equipment: ");
                if (!int.TryParse(Console.ReadLine(), out selectedMobileEquipment) || selectedMobileEquipment < 0 || selectedMobileEquipment > equipments.Count)
                {
                    Console.WriteLine("\nSelect correct equipment.\n");
                }
                else
                {
                    equipments.RemoveAt(selectedMobileEquipment - 1);
                    Console.WriteLine("\nThe equipment has been deleted.\n");
                }


            }
            else
            {
                Console.WriteLine("\nYou have not added equipments yet.");
            }
            Console.WriteLine();


        }
        /// <summary>
        /// Move equipment
        /// </summary>
        /// <param name="equipments"></param>
        static void moveEquipment(List<Equipment> equipments)
        {
            if (equipments.Count > 0)
            {
                listAllEquipment(equipments);
                int selectedMobileEquipment = -1;
                Console.Write("Select the mobile equipment: ");
                if (!int.TryParse(Console.ReadLine(), out selectedMobileEquipment) || selectedMobileEquipment < 0 || selectedMobileEquipment > equipments.Count)
                {
                    Console.WriteLine("\nSelect correct mobile equipment.\n");
                }
                else
                {
                    if (equipments[selectedMobileEquipment - 1] is Mobile)
                    {
                        int distanceMoved;
                        Console.Write("Enter the distance to move mobile equipment: ");
                        if (!int.TryParse(Console.ReadLine(), out distanceMoved) || distanceMoved < 0)
                        {
                            Console.WriteLine("\nEnter correct the distance to move>0.\n");
                        }
                        else
                        {
                            ((Mobile)equipments[selectedMobileEquipment - 1]).DistanceMoved = distanceMoved;
                        }
                    }
                    else {
                        Console.WriteLine("\nSelect mobile equipment.\n");
                    }
                }


            }
            else
            {
                Console.WriteLine("\nYou have not added equipments yet.");
            }
            Console.WriteLine();


        }
        /// <summary>
        /// List all equipment
        /// </summary>
        /// <param name="equipments"></param>
        static void listAllEquipment(List<Equipment> equipments)
        {


            if (equipments.Count > 0)
            {
                Console.WriteLine("\n{0,-15}{1,-25}{2,-15}", "No", "Name", "Description");
                for (int i = 0; i < equipments.Count; i++)
                {
                    Console.WriteLine("{0,-15}{1,-25}{2,-15}", (i + 1), equipments[i].Name, equipments[i].Description);
                }
            }
            else
            {
                Console.WriteLine("\nYou have not added equipments yet.");
            }


            Console.WriteLine();
        }
        /// <summary>
        /// Show details
        /// </summary>
        /// <param name="equipments"></param>
        static void showdetails(List<Equipment> equipments)
        {


            if (equipments.Count > 0)
            {
                Console.WriteLine("\n{0,-15}{1,-15}{2,-25}{3,-35}{4,-15}", "No", "Type", "Name", "Description", "Cost");
                for (int i = 0; i < equipments.Count; i++)
                {
                    string type = "Immobile";
                    if (equipments[i] is Mobile)
                    {
                        type = "Mobile";
                    }
                    Console.WriteLine("{0,-15}{1,-15}{2,-25}{3,-35}{4,-15}", (i + 1), type, equipments[i].Name, equipments[i].Description, equipments[i].MaintenanceCost);
                }
            }
            else
            {
                Console.WriteLine("\nYou have not added equipments yet.");
            }
            Console.WriteLine();
        }


        /// <summary>
        /// List all mobile equipment
        /// </summary>
        /// <param name="equipments"></param>
        static void listAllMobileEquipment(List<Equipment> equipments)
        {


            if (equipments.Count > 0)
            {
                int i = 0;
                Console.WriteLine("\n{0,-15}{1,-15}{2,-25}{3,-35}{4,-15}{5,-15}", "No", "Type", "Name", "Description", "Cost", "Distance moved");
                foreach (Equipment equipment in equipments.FindAll(e => e is Mobile))
                {
                    Console.WriteLine("{0,-15}{1,-15}{2,-25}{3,-35}{4,-15}{5,-15}", (i + 1), "Mobile", equipment.Name, equipment.Description, equipment.MaintenanceCost, (((Mobile)equipment).DistanceMoved));
                    i++;
                }
            }
            else
            {
                Console.WriteLine("\nYou have not added equipments yet.");
            }
            Console.WriteLine();
        }
        /// <summary>
        /// List all Immobile Equipment
        /// </summary>
        /// <param name="equipments"></param>
        static void listAllImmobileEquipment(List<Equipment> equipments)
        {


            if (equipments.Count > 0)
            {
                int i = 0;
                Console.WriteLine("\n{0,-15}{1,-15}{2,-25}{3,-35}{4,-15}", "No", "Type", "Name", "Description", "Cost");
                foreach (Equipment equipment in equipments.FindAll(e => e is Immobile))
                {
                    Console.WriteLine("{0,-15}{1,-15}{2,-25}{3,-35}{4,-15}", (i + 1), "Immobile", equipment.Name, equipment.Description, equipment.MaintenanceCost);
                    i++;
                }
            }
            else
            {
                Console.WriteLine("\nYou have not added equipments yet.");
            }
            Console.WriteLine();
        }
        /// <summary>
        ///  List all equipment that have not been moved till now
        /// </summary>
        /// <param name="equipments"></param>
        static void  listAllEquipmentNotBeenMovedTillNow(List<Equipment> equipments)
        {


            if (equipments.Count > 0)
            {
                int i = 0;
                Console.WriteLine("\n{0,-15}{1,-15}{2,-25}{3,-35}{4,-15}", "No", "Type", "Name", "Description", "Cost");
                foreach (Equipment equipment in equipments.FindAll(e => e is Mobile && (((Mobile)e).DistanceMoved)==0))
                {
                    Console.WriteLine("{0,-15}{1,-15}{2,-25}{3,-35}{4,-15}", (i + 1), "Mobile", equipment.Name, equipment.Description, equipment.MaintenanceCost);
                    i++;                }
            }
            else
            {
                Console.WriteLine("\nYou have not added equipments yet.");
            }
            Console.WriteLine();
        }
        
    }
}