Dictionary Method

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

namespace BInnovitec.Abstract
{
    //refrence from java2s.com
    class Program
    {
        static void Main(string[] args)
        {
            CompleExampleOfArrayListWithDictionary();
            // AbstractFunction();
            // AggregateProgram();
          //  ConvertArrayToDictionary();
            Console.ReadLine();
        }

        private static void ConvertArrayToDictionary()
        {
            var employeeRecord = new[] {
                new {Name="Rajesh",Age=12,Branch="CS"},
                new {Name="Girijesh",Age=23,Branch="ME"},
                new {Name="Mahesh",Age=24,Branch="EC"}};
            var employeeDictionary = employeeRecord.ToDictionary(employeeKey => employeeKey.Name);
            Console.WriteLine("{0} age is :{1} and branch is:{2}", employeeDictionary["Girijesh"].Name, employeeDictionary["Girijesh"].Age, employeeDictionary["Girijesh"].Branch);
        }

  private static void CompleExampleOfArrayListWithDictionary()
        {
            Dictionary<int, Employee> employeeArrayDataRecord = Employee.GetEmployeeArray().ToDictionary(k => k.rollNumber);
            foreach (var emp in employeeArrayDataRecord)
            {
                Console.WriteLine(emp.Value.name+""+emp.Value.branch+""+emp.Value.rollNumber);
            }
        }

 public class Employee

    {

        public int rollNumber { get; set; }

        public string name { get; set; }

        public string branch { get; set; }

        public static ArrayList GetEmployeeArrayList()

        {

            ArrayList alEmployee = new ArrayList();

            alEmployee.Add(new Employee { rollNumber = 1, name = "Girijesh", branch = "CS" });

            alEmployee.Add(new Employee { rollNumber = 2, name = "Srijesh", branch = "ME" });

            return alEmployee;

        }

        public static Employee[] GetEmployeeArray()

        {

            //their are 2methods defined here use anyone.

            return (GetEmployeeArrayList().Cast<Employee>().ToArray());

            //return ((Employee[])GetEmployeeArrayList().ToArray(typeof(Employee)));

        }

    }

        private static void AggregateProgram()
        {
            int number = 4;
            IEnumerable<int> sequenceNumber = Enumerable.Range(1, number);
            foreach (var item in sequenceNumber)
            {
                Console.WriteLine(item);
            }
            // int[] sequenceNumber = {1,2,3,4,5 };
            var result = sequenceNumber.Aggregate((a, b) => a * b);
            Console.WriteLine("1*2*..*number = {0} ", result);
            result = sequenceNumber.Aggregate(0, (p, q) => p + q);
            Console.WriteLine("1+2+..+number = {0} ", result);
            var testResult = from m in typeof(int).GetMethods()
                             group m by m.Name into gBy
                             select gBy;
            Dictionary<string, int> myDictionary = testResult.ToDictionary(k => k.Key, k => k.Count());
            foreach (var item in myDictionary)
            {
                Console.WriteLine("The key is:{0} and value is:{1}", item.Key, item.Value);

            }
        }

        private static void AbstractFunction()
        {
            MotorVehicle mvc = new MotorVehicle("BMW", "$10008");
            mvc.ShowNameAndPrice();
        }
    }

    public class MotorVehicle : Vehicle
    {
        public MotorVehicle(string name, string price)
            : base(name, price)
        {
            //ToDO
        }

        public override void ShowNameAndPrice()
        {
            Console.WriteLine("The name of Car is :{0} and price tag ={1} ");
            Console.WriteLine(nameV + "" + priceV);
        }
    }

    public abstract class Vehicle
    {
        public string nameV;
        public string priceV;
        public Vehicle(string name, string price)
        {
            // TODO: Complete member initialization
            this.nameV = name;
            this.priceV = price;
        }
        public abstract void ShowNameAndPrice();
    }
}

=================================================

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

namespace BInnovitec.Abstract
{
    //refrence from java2s.com
    public class Program
    {
        static void Main(string[] args)
        {
            #region Using constructor
            ArrayList list = new ArrayList();
            list.Add(new Instrument("computer", 12.23, 2));
            list.Add(new Instrument("printer", 2.23, 4));
            foreach (var item in list)
            {
                Console.WriteLine(item);
            }
            #endregion          
                Console.ReadKey();
        }

     
    }

    public class Instrument
    {
        public string name { get; set; }
        public double cost { get; set; }
        public int quantity { get; set; }

        public Instrument(string itemName, double money, int number)
        {
            this.name = itemName;
            this.cost = money;
            this.quantity = number;
        }

        public override string ToString()
        {
            return String.Format("{0,-10}Cost: {1,6:C}  Quantity: {2}", name, cost, quantity);
        }
    }
}