using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace ObjectContainingOtherObjects
{
[Serializable]
public class Car
{
private string _make;
private string _model;
private int _year;
private int _mileage;
private decimal _price;
public Car(string make, string model, int year, int mileage, decimal price)
{
_make = make;
_model = model;
_year = year;
_mileage = mileage;
_price = price;
}
public string Make
{ get { return _make; } }
public string Model
{ get { return _model; } }
public int Year
{ get { return _year; } }
public int Mileage
{ get { return _mileage; } }
public decimal Price
{ get { return _price; } }
}
}
//==================================================================
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace ObjectContainingOtherObjects
{
[Serializable]
public class Person
{
private string _firstname;
private string _lastname;
private List<string> _phoneList;
private List<Car> _carList;
public Person(string firstname, string lastname)
{
_firstname = firstname;
_lastname = lastname;
//create both lists
_phoneList = new List<string>();
_carList = new List<Car>();
}
public string Firstname
{ get { return _firstname; } }
public string Lastname
{ get { return _lastname; } }
//add methods to add new car to the carlist and a new phone
//to the phonelist
public void AddCar(Car car)
{
_carList.Add(car);
}
public void AddPhone(string phone)
{
_phoneList.Add(phone);
}
//return the list of cars using a property that returns
//the list as an array of cars (a copy of the _carList)
public Car[] CarList
{ get { return _carList.ToArray(); } }
//return the list of phones using a property that returns
//the list as an array of strings (a copy of the original _phoneList)
public string[] PhoneList
{ get { return _phoneList.ToArray(); } }
//provide methods to remove items from the lists
public bool RemoveCar(Car car)
{
return _carList.Remove(car);
}
public bool RemovePhone(string phone)
{
return _phoneList.Remove(phone);
}
}
}
//===================================================================
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Formatters.Binary;
namespace ObjectContainingOtherObjects
{
public partial class Form1 : Form
{
string peoplesfile = "peoplesfile.txt";
//file to use for serializing/deserializing peopleList
string peopleListfile = "peopleListdata.dat";
List<Person> peopleList = new List<Person>();
public Form1()
{
InitializeComponent();
}
private void btnAddNewPerson_Click(object sender, EventArgs e)
{
string firstname = txtFirstname.Text;
string lastname = txtLastname.Text;
//save to a file
StreamWriter sw = null;
try
{
using (sw = new StreamWriter(
new FileStream(peoplesfile, FileMode.Append, FileAccess.Write)))
{
sw.WriteLine(firstname);
sw.WriteLine(lastname);
}
Person p = new Person(firstname, lastname);
peopleList.Add(p);
MessageBox.Show("new person has been added");
txtLastname.Clear();
txtFirstname.SelectAll();
txtFirstname.Focus();
}
catch (IOException ioe)
{
MessageBox.Show(ioe.Message);
}
}
private void button1_Click(object sender, EventArgs e)
{
listView1.Items.Clear();
foreach (Person p in peopleList)
{
listView1.Items.Add(GetListViewItem(p));
}
}
private ListViewItem GetListViewItem(Person p)
{
ListViewItem lvi = new ListViewItem(p.Lastname);
lvi.SubItems.Add(p.Firstname);
return lvi;
}
private void btnAddCarToSelectedPerson_Click(object sender, EventArgs e)
{
ListView.SelectedIndexCollection sindices =
listView1.SelectedIndices;
if (sindices.Count > 0)
{
int sindex = sindices[0];
//Assuming that the index in listview matches the index
//in peopleList
//the the person object corresponding to the firstname,
//lastname selected in the listview
Person p = peopleList[sindex];
//create new car
string make = txtMake.Text;
string model = txtModel.Text;
int year = int.Parse(txtYear.Text);
int mileage = int.Parse(txtMileage.Text);
decimal price = decimal.Parse(txtPrice.Text);
Car car = new Car(make, model, year, mileage, price);
//add car to the person
p.AddCar(car);
MessageBox.Show("Car has been added to the selected person");
}
else
MessageBox.Show("you must first select a person");
}
private void Form1_Load(object sender, EventArgs e)
{
if (File.Exists(peoplesfile))
{
using (StreamReader sr = new StreamReader(
new FileStream(peoplesfile, FileMode.Open, FileAccess.Read)))
{
while (!sr.EndOfStream)
{
string firstname = sr.ReadLine();
string lastname = sr.ReadLine();
peopleList.Add(new Person(firstname, lastname));
}
}
}
//------------------------------------
//deserialize peopleList
FileStream fs = null;
try
{
//1. Create a Formatter
BinaryFormatter formatter = new BinaryFormatter();
//2. Create file stream
fs = new FileStream(peopleListfile,
FileMode.Open,
FileAccess.Read);
//3.Deserialize (reconstruct the list of people
peopleList = (List<Person>)formatter.Deserialize(fs);
MessageBox.Show("people list has been deserialized");
}
catch (IOException ioe)
{
MessageBox.Show(ioe.Message);
}
catch (SerializationException se)
{
MessageBox.Show(se.Message);
}
finally
{
if (fs != null) fs.Close();
}
}
private void btnDisplayCarsOfSelectedPerson_Click(object sender, EventArgs e)
{
//get all the cars of the selected person
//get the selected person
ListView.SelectedIndexCollection sindices =
listView1.SelectedIndices;
if (sindices.Count > 0)
{
int sindex = sindices[0];
Person p = peopleList[sindex];
//get his/her cars
Car[] cars = p.CarList;
//display all the cars
listView2.Items.Clear();
foreach (Car c in cars)
{
ListViewItem lvitem = new ListViewItem(c.Make);
lvitem.SubItems.Add(c.Model);
lvitem.SubItems.Add(c.Year.ToString());
lvitem.SubItems.Add(c.Mileage.ToString("n0"));
lvitem.SubItems.Add(c.Price.ToString("c"));
//add lvitem to the listview
listView2.Items.Add(lvitem);
}
}
}
private void btnAddPhoneToPerson_Click(object sender, EventArgs e)
{
ListView.SelectedIndexCollection sindices =
listView1.SelectedIndices;
if (sindices.Count > 0)
{
int sindex = sindices[0];
Person p = peopleList[sindex];
//get new phone from user
string phone = txtPhoneNumber.Text.Trim();
if (phone != String.Empty)
{
p.AddPhone(phone);
MessageBox.Show("phone, successfully added");
}
else
MessageBox.Show("Need to enter a phone number");
}
}
private void btnDisplayAllPhones_Click(object sender, EventArgs e)
{
ListView.SelectedIndexCollection sindices =
listView1.SelectedIndices;
if (sindices.Count > 0)
{
//get the index of the selected person
int sindex = sindices[0];
//use the index to extract the person object
Person p = peopleList[sindex];
//display the list of phones of the given person p
phoneListbox.Items.Clear();
foreach (string phone in p.PhoneList)
{
phoneListbox.Items.Add(phone);
}
}
}
private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
//this code runs right before the application closes
//save the entire list of people
//use Serialization. Serialize the list using the BinaryFormat
FileStream fs = null;
try
{
//1. Create a Formatter
BinaryFormatter formatter = new BinaryFormatter();
//2. Create file stream
fs = new FileStream(peopleListfile,
FileMode.Create,
FileAccess.Write);
//3.Serialize the list (break dow into bits)
formatter.Serialize(fs, peopleList);
MessageBox.Show("people list has been serialized");
}
catch (IOException ioe)
{
MessageBox.Show(ioe.Message);
}
catch (SerializationException se)
{
MessageBox.Show(se.Message);
}
finally
{
if (fs != null) fs.Close();
}
}
}
}
///Build a GUI to allow user to:
/// Enter a person (firstname and lastname) then add the
/// person to a list of people, defined in Form1. At the same
/// time save the person first and last names to a text file.
///provide gui to read the text file and populate the listview
///with first and last names
///
///
///Lab Assignment:
///Add gui to enter a phone number and add it to the selected person
///then add gui to display all the phone numbers of the selected person
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