Using C# window Form Add a class library project (VehiclesLib) To the Library pr

Question

Using C# window Form Add a class library project (VehiclesLib) To the Library project

Add class: Vehicle (_make, _model, _year, _price, _vin), Add constructor and get properties, Method: UpdatePrice(decimal newPrice).

Then Add a class: Person (_firstname, _lastname, List vehicleList), Add constructor, get properties, Method: Add(Vehicle v), Method: Remove(string vin) (remove by vin number)

In Form1: create a list of person, preload the list with at least 7 people to each add at least 2 vehicles, provide gui to display all the people and their vehicles, provide gui to add a vehicle to a person, provide gui to update the price of a vehicle of a person, provide gui to remove (sell) a car of a person.

Explanation / Answer

Question contains many sub-question (in-fact it contains a complete project itself). So providing only first 4 answers as per guidelines of chegg.

1) Add class: Vehicle (_make, _model, _year, _price, _vin)

2) Add constructor and get properties

3) Method: UpdatePrice(decimal newPrice).

4) Add a class: Person (_firstname, _lastname, List vehicleList)

5) Add constructor, get properties

6) Method: Add(Vehicle v), Method: Remove(string vin) (remove by vin number)

namespace DataContracts
{
/// <summary>
/// Vehicle Class
/// </summary>
public class Vehicle
{
private static int idcount = 0;

#region private properties

private string _make;
private string _mode;
private int _year;
private decimal _price;
private string _vid;
private int _id;

#endregion

#region Properties

public string Make { get { return _make; } }

public string Mode { get { return _mode; } }

public int Year { get { return _year; } }

public decimal Price { get { return _price; } }

public string Vid { get { return _vid; } }

#endregion

#region constructor

public Vehicle(string make = "", string mode = "", int year = 1980, decimal price = 0, string vid = "")
{
_id = ++idcount;
_make = make;
_mode = mode;
_year = year;
_price = price;
_vid = vid;
}

#endregion

#region public methods

/// <summary>
/// To update the price of the vehicle.
/// </summary>
/// <param name="newPrice">new value.</param>
/// <returns>true if update is successfull.</returns>
public bool UpdatePrice(decimal newPrice)
{
// we can remove this validation also.
if (newPrice == 0)
return false;

_price = newPrice;

return true;
}

#endregion
}
}

namespace DataContracts
{
using System.Collections.Generic;
using System.Linq;

public class Person
{
private static int personCount = 0;

#region private properties

private string _firstname;
private string _lastname;
private IList<Vehicle> _vehicleList;
private int _pid;

#endregion

#region properties

public string Firstname { get { return _firstname; } }

public string Lastname { get { return _lastname; } }

public IList<Vehicle> VehicleList { get { return _vehicleList; } }

#endregion

#region constructor

public Person(string firstname = "", string lastname = "", IList<Vehicle> vehicleList = null)
{
_firstname = firstname;
_lastname = lastname;
_vehicleList = vehicleList;
}

#endregion

#region public methods

/// <summary>
/// to add vehicle.
/// </summary>
/// <param name="v">vehicle.</param>
/// <returns>true if succesfull.</returns>
public bool Add(Vehicle v)
{
if (v == null)
return false;

_vehicleList.Add(v);

return true;
}

/// <summary>
/// remove vehicle.
/// </summary>
/// <param name="vin">vehicle number.</param>
/// <returns>true if removed.</returns>
public bool Remove(string vin)
{
if (string.IsNullOrEmpty(vin))
return false;

((List<Vehicle>)_vehicleList).RemoveAll(v => v.Vid == vin);

return true;
}

#endregion

}
}

to create object, we can use

var v = new Vehicle("make","model",2005,50000, "TINA-1122");

we can also update the price:

v.updateprice(60000);

To display form,

we should create a grid. this grid should be bound with list of person and a subgrid should be bound with each person's vehicle list.

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