Пример Mod2Ex2

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Text;

using System.Windows.Forms;

namespace XOGame

{ enum XOCell{X,O,None}

public partial class Form1 : Form

{

Button[,] field;

XOCell b;//предыдущий игрок-х(true) или о(false)

public Form1()

{ InitializeComponent();

b = XOCell.X;

this.ClientSize = new Size(340, 340);

field = new Button[3, 3];

for (int i = 0; i < 3; i++)

for (int j = 0; j < 3;j++ )

{ field[i, j] = new Button();

field[i, j].Text = "";

field[i, j].Bounds =

new Rectangle(

10 + j * ((ClientSize.Width - 20) / 3),

10 + i * ((ClientSize.Height - 20) / 3),

((ClientSize.Width - 20) / 3),

((ClientSize.Height - 20) / 3)

);

this.Controls.Add(field[i, j]);

field[i, j].Click += Button_Click;

}

}

private void Button_Click(object sender, EventArgs e)

{ if (b == XOCell.X) { ((Button)sender).Text = "O"; b = XOCell.O; }

else { ((Button)sender).Text = "X"; b = XOCell.X; }

((Button)sender).Click -= Button_Click;

//определить результат игры-продолжение,ничья, победа Х, победа О

AnalyzeResult();

}

private void AnalyzeResult()

{ //для доски 3х3 используем простой исчерпывающий анализ

//все горизонтали

TestLine(field[0, 0], field[0, 1], field[0, 2]);

TestLine(field[1, 0], field[1, 1], field[1, 2]);

TestLine(field[2, 0], field[2, 1], field[2, 2]);

//все вертикали

TestLine(field[0, 0], field[1, 0], field[2, 0]);

TestLine(field[0, 1], field[1, 1], field[2, 1]);

TestLine(field[0, 2], field[2, 1], field[2, 2]);

//диагонали

TestLine(field[0, 0], field[1, 1], field[2, 2]);

TestLine(field[0, 2], field[1, 1], field[2, 0]);

}

//проверка одной линии

private void TestLine(Button b1, Button b2, Button b3)

{ if ((b1.Text == b2.Text) && (b1.Text == b3.Text))

{ if (b1.Text != "")

{ this.Text = "победил " + b1.Text;

this.BlockAllField();

}

}

}

//блокировка всех кнопок

private void BlockAllField()

{ for (int i = 0; i < 3; i++)

for (int j = 0; j < 3; j++)

{

field[i, j].Click -= Button_Click;

}

}

}

}

Пример Mod2Ex3

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

namespace WindowsFormsApplication1

{

[Serializable]

class Book

{

private string title;

private int count;

public Book(string title, int count)

{ this.title = title;

if (count>0) this.count = count;

else throw new Exception("Количество экземпляров должно быть положительным!");

}

public Book(string title)

{ this.title = title;

this.count = 1;

}

public int Count { get { return count; } }

public void AddInstance() { count++; }

public void RemoveInstance()

{ if (count >1) count--;

else throw new Exception("Последний экземпляр книги!");

}

public override string ToString()

{ return String.Format("Книга: Название - {0} Экземпляров - {1}", title, count);

}

}

}

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

namespace WindowsFormsApplication1

{

[Serializable]

class Library

{

private List<Book> books;

public Library()

{

books = new List<Book>();

}

public List<Book> Books { get { return books; } }

public void Add(Book book)

{

if (books.Contains(book)) book.AddInstance();

else books.Add(book);

}

public void Remove(Book book)

{ if (books.Contains(book))

if (book.Count>0) book.RemoveInstance();

else books.Remove(book);

else throw new Exception("Такой книги нет!");

}

}

}

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

using System.Runtime.Serialization.Formatters.Binary;

using System.IO;

namespace WindowsFormsApplication1

{

public partial class Form1 : Form

{

private Library library;

private string fileName=null;

public Form1()

{

InitializeComponent();

}

private void RefreshLibraryView()

{ lstLibrary.Items.Clear();

foreach(Book book in library.Books)

lstLibrary.Items.Add(book);

}

private void btnAddBook_Click(object sender, EventArgs e)

{ library.Add(new Book(txtBookTitle.Text));

RefreshLibraryView();

}

private void btnOpenLibrary_Click(object sender, EventArgs e)

{

OpenFileDialog ofd = new OpenFileDialog();

ofd.InitialDirectory = Application.StartupPath;

if (ofd.ShowDialog() == DialogResult.OK)

{

BinaryFormatter binFormat = new BinaryFormatter();

fileName = ofd.FileName;

Stream fStream = File.OpenRead(fileName);

library = (Library)binFormat.Deserialize(fStream);

fStream.Close();

}

else

{

library = new Library();

}

this.Activate();

RefreshLibraryView();

}

private void Form1_FormClosing(object sender, FormClosingEventArgs e)

{

while (fileName == null)

{

SaveFileDialog sfd = new SaveFileDialog();

sfd.InitialDirectory = Application.StartupPath;

if (sfd.ShowDialog() == DialogResult.OK)

{

fileName = sfd.FileName;

}

}

BinaryFormatter binFormat = new BinaryFormatter();

Stream fStream =

new FileStream(fileName, FileMode.Create, FileAccess.Write, FileShare.None);

binFormat.Serialize(fStream, library);

fStream.Close();

this.Hide();

}

private void btnAddInstance_Click(object sender, EventArgs e)

{

if (lstLibrary.SelectedItem != null)

{

library.Add((Book)(lstLibrary.SelectedItem));

RefreshLibraryView();

}

}

private void btnAddBook_Click_1(object sender, EventArgs e)

{

library.Add(new Book(txtBookTitle.Text));

RefreshLibraryView();

}

private void btnRemoveInstance_Click(object sender, EventArgs e)

{

if (lstLibrary.SelectedItem != null)

{

try

{

library.Remove((Book)(lstLibrary.SelectedItem));

}

catch

{

}

RefreshLibraryView();

}

}

private void button1_Click(object sender, EventArgs e)

{

if (lstLibrary.SelectedItem != null)

{

library.Add((Book)(lstLibrary.SelectedItem));

RefreshLibraryView();

}

}

}

}