Property or indexer cannot be assigned to - it is read only
<p>Hey i just started by C# class 2 weeks ago so i am beginner programmer 
and i am having trouble with my code. i have 2 classes, one of them is the test case that runs the program and the other has private variables. my variables color, NumOfWheels, StartingPoint, CurrentSpeed, and Mileage says property or indexer cannot be assigned to - it is read only when i try to build it. how do i fix this? </p>

<pre><code>using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Homework1 
{
    class Car
    {
        private string color;
        private int numOfWheels;
        private int startingPoint;
        private int mileage;
        private int currentSpeed;

        public Car()
        {
            Color = "";
            NumOfWheels = 4;
            StartingPoint = 100000;
            CurrentSpeed = 0;
            Mileage = 0;
        }

        public Car(string color, int numOfWheels, int startingPoint, int currentSpeed, int mileage)
        {
            Color = color;
            NumOfWheels = numOfWheels;
            StartingPoint = startingPoint;
            CurrentSpeed = currentSpeed;
            Mileage = mileage;
        }

        public virtual void setcolor(string color)
        {
            this.color = color;
        }

        public virtual void setnumOfWheels(int numOfWheels)
        {
            this.numOfWheels = numOfWheels;
        }


        public virtual string Color
        {
            get
            {
                return color;
            }
        }

        public virtual double NumOfWheels
        {
            get
            {
                return numOfWheels;
            }
        }

        public virtual int StartingPoint
        {
            get
            {
                return startingPoint;
            }
        }

        public virtual int CurrentSpeed
        {
            get
            {
                return currentSpeed;
            }
        }

        public virtual int Mileage
        {
            get
            {
                return mileage;
            }
        }


        public override string ToString()
        {
            return (" color " + color + " numOfWheels" + numOfWheels + "startingPoint " + startingPoint + "mileage" + mileage + "current speed" + currentSpeed);
        }
     }
}

********************************************************************************
///  this is the test case that runs the program 
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApplication8
{
    class CarTest
    {
       static void Main(string[] args)
        {


            Car myCar = new Car();


                Console.WriteLine("*****************************"); 
                Console.WriteLine("*                           *"); 
                Console.WriteLine("* WELCOME TO CAR MANAGER    *");
                Console.WriteLine("*  By &lt;&lt;my Name&gt;&gt;   *"); 
                Console.WriteLine("*                           *");
                Console.WriteLine("*****************************");



            Console.WriteLine("\nEnter the number of wheels of a car");
            int numOfWheels = Console.Read();
                myCar.setWheels(numOfWheels);



            Console.WriteLine("Enter the color of the car");
            String color = Console.ReadLine();

            Console.WriteLine("Current mileage will be set to zero");

            Console.WriteLine("The current starting point will be set to 100000");

            Console.Write("The current status of your car \n{0:D} Wheels, \n{1}, \n{2:D} Miles and \nCAR POINT = {3:D}", myCar.getNumOfWheels, 
            myCar.getColor, myCar.getMileage, myCar.getStartingPoint);

            Console.WriteLine("\nEnter the owner's name");
            String name = Console.ReadLine();

            Console.WriteLine("Enter the miles the car ran in this week");
            int milesThisWeek = Console.ReadLine;
            myCar.setMileage(Mileage);

            Console.WriteLine("This car is owned by n{1}", name); 


                Console.WriteLine("===&gt;The current status of your car:");
            Console.WriteLine("Wheels: " + myCar.getWheels());
            Console.WriteLine("Color: " + myCar.getColor());
                Console.WriteLine("Current Mileage: " + myCar.getMileage());
            Console.WriteLine("Starting Point: " + myCar.getStartingPoint());
            Console.WriteLine("************ Thank you for using CAR MANAGER *************");
            Console.WriteLine("----------------------------------------------------------");
            Console.WriteLine("----------------------------------------------------------");
            Console.WriteLine("Press ENTER to close console…….");    
        }
    }
}
</code></pre>