Файл: Разработка Интернет-магазина (Обзор и Анализ предметной области).pdf

Приложение

Листинг А1. Исходный код модуля FrmHandySupply.cs

using System;

using System.Collections.Generic;

using System.Drawing;

using System.Windows.Forms;

namespace burakAydemirFinalProject

{

public partial class frmHandySupply : Form

{

Product[] inventory = new Product[17];

List<decimal> decBuy = new List<decimal>();

List<Image> cartItem = new List<Image>();

int cartCount = 0;

public frmHandySupply()

{

InitializeComponent();

}

private void frmHandySupply_Load(object sender, EventArgs e)

{

// перемещние lblCartCount в начало btnCart, чтобы счетчик был виден, а не скрыт за кнопкой

lblCartCount.BringToFront();

// отображение количества товаров в корзине (0 на момент загрузки формы)

lblCartCount.Text = cartCount.ToString();

// добавить категории в список категорий

lstCategory.Items.Add("Аккум.дрель");

lstCategory.Items.Add("Пиломатериалы");

lstCategory.Items.Add("Винты");

lstCategory.Items.Add("Цементная плитка");

lstCategory.Items.Add("Клей для плитки");

lstCategory.Items.Add("Изолента");

lstCategory.Items.Add("Гидронасос");

lstCategory.Items.Add("Фонарный столб");

lstCategory.Items.Add("Угольный гриль");

lstCategory.Items.Add("Газонокосилка");

lstCategory.Items.Add("Садовый шланг");

lstCategory.Items.Add("Валики для краски");

lstCategory.Items.Add("Кисти");

lstCategory.Items.Add("Гаражный ключ");

lstCategory.Items.Add("Ящик (инструменты)");

lstCategory.Items.Add("Венок");

lstCategory.Items.Add("Рождеств. декор");

// добавить товары с описанием (взято с Amazon)

inventory[0] = new Product("Dewalt", "DCD771C2", "1000014677", "20-Volt Max Lithium-Ion Cordless Drill/Driver Kit", 99.00M, Image.FromFile("dewalt.jpg"), "Compact design fits into tight areas.\nTransmission offers 2-speed options.\nHighly rated high-powered motor");

inventory[1] = new Product("Lumber Supply", "161640", "161640", "2 in. x 4 in. x 96 in. Premium Kiln-Dried Whitewood Stud", 2.72M, Image.FromFile("stud.jpg"), "Use for framing, houses, barns, sheds, and other structures.\nUse for any other small projects.\nInterior or Exterior Use");

inventory[2] = new Product("Rock-On", "23320", "353046", "#9 x 2-1/4 in. Phillips High Low Threaded Wafer-Head Cement Board Screws", 8.33M, Image.FromFile("screws.jpg"), "(100-Pack)\nUse Rock-On screws for a variety of projects including bathtubs, showers, countertops and flooring applications.\nIdeal for attaching durock and wonderboard to wood and light gauge steel.");

inventory[3] = new Product("Durock", "172965", "917647", "Next Gen 1/2 in. x 3 ft. x 5 ft. Cement Board", 9.78M, Image.FromFile("durock.jpg"), "Backerboard for ceramic tile and exterior finish systems.\nLightweight cement board.\nWater-durable, mold-resistant substrate for high-moisture areas.");

inventory[4] = new Product("Custom Building Products", "FBG25", "731136", "FlexBond Gray 25 lb. Crack Prevention Mortar", 17.97M, Image.FromFile("thinset.jpg"), "For use with ceramic, metal and porcelain tile.\nFlexes up to 1/16 in. to prevent cracks.\nGreat bond strength.\nDries in as little as 24 hours.\nQualifies for a lifetime system warranty.");

inventory[5] = new Product("FibaTape", "FDW8248-U", "483689", "300 ft. White Self-Adhesive Mesh Drywall Joint Tape", 6.45M, Image.FromFile("tape.jpg"), "Made of fiberglass mesh for strong drywall joints. It can also be used for repairing small holes. It resists cracking and accommodates a range of temperature- and humidity levels. It is easy to apply and will not blister or bubble.");

inventory[6] = new Product("Basement Watchdog", "BW4000", "618637", "1/2 HP Big Combination Sump Pump System", 397.00M, Image.FromFile("sump.jpg"), "The primary system pumps 4,400 GPH at 0 ft. of lift and 3,200 GPH at 10 ft. of lift.\nThe backup system pumps 2,500 GPH at 0 ft. of lift and 1,730 GPH at 10 ft. of lift.");

---

inventory[7] = new Product("Malibu", "8422-4110-01", "1000022987", "1-Light Dark Brown LED Jelly Jar Pathway Light", 29.97M, Image.FromFile("pathlight.jpg"), "The light is constructed of durable metal with a bronze finish. It features a modern maritime design, making it an attractive way to increase security. It can be used on a flat surface, strung throughout your garden, or hung from the included shepherd's hook.");

inventory[8] = new Product("Weber", "14402001", "14402001", "Original Kettle Premium 22 in. Charcoal Grill in Copper", 149.00M, Image.FromFile("weber.jpg"), "Featuring 363 sq. in. of cooking space, the Weber One-Touch Gold 22-1/2 in. Charcoal Kettle Grill consists of heavy-gauge porcelain-enameled lid and bowl for durability and long grill life.");

inventory[9] = new Product("Yard Machines", "11A-B9BG729", "204686138", "21 in. 190 cc Walk-Behind Gas Lawn Mower", 239.00M, Image.FromFile("mower.jpg"), "The powerful Briggs && Stratton engine delivers solid, efficient power to tackle the yard. This 21 in. Push Mower offers 6 cutting positions to cut grass down to size, with high rear wheels makes it ideal for use on uneven terrain.");

inventory[10] = new Product("Goodyear Products", "20258074", "457712", "Premium 5/8 in. x 50 ft. Commercial Grade Black Rubber Water Hose", 29.97M, Image.FromFile("hose.jpg"), "The Goodyear 5/8 in. x 50 ft. Premium Commercial-Grade Rubber Water Hose is heavy-duty, kink-resistant and durable. It resists abrasion and won't degrade in sun or frost, making it ideal for any small to medium-sized landscape job. Reinforced for high burst strength.");

inventory[11] = new Product("Linzer", "RS 1013", "716937", "9 in. x 3/8 in. White Woven Roller Covers (3-Pack)", 10.54M, Image.FromFile("rollers.jpg"), "Great value 3-pack of 9 in. professional quality woven rollers leave an ultra smooth finish. Recommended for use with all premium paints on drywall or plaster. 9 in. woven roller covers are ideal for larger projects such as painting your dining room, kitchen or porch.");

inventory[12] = new Product("Linzer", "A1170-4", "703728", "All Paints Brush Set (4-Piece)", 16.76M, Image.FromFile("brushes.jpg"), "All Paints 4-Piece Brush Set feature wooden handles and plugs with polyester filaments. They feature rust and solvent-resistant ferrules. These brushes are great for most flat and satin paints and stains.");

inventory[13] = new Product("Chamberlain", "HD520EV", "1000053031", "1/2 HP Belt Drive Garage Door Opener with MyQ Technology", 188.00M, Image.FromFile("opener.jpg"), "Chamberlain's Premium MyQ 1/2 HP Belt Drive Garage Door Opener is an all-purpose garage door opener. It has a steel reinforced belt for quiet, long-lasting performance. It includes two visor remotes and a keypad - perfect for the family on the go.");

inventory[14] = new Product("Husky", "HOTC4609B1QBD", "763089", "46 in. 9-Drawer Mobile Workbench with Solid Wood Top", 239.00M, Image.FromFile("workbench.jpg"), "Steel construction with an industrial powder coated finish.\nSolid par wood top with protective coating.\nFull extension 75 lbs. rated ball bearing drawer slides on the top drawer, 50 lbs. rated ball bearing drawer slides on the other drawers.");

inventory[15] = new Product("Holiday Decor", "10015", "1001189057", "28 in. Fraser Fir Decorated Wreath", 29.98M, Image.FromFile("wreath.jpg"), "Fraser Fir wreaths are a classic traditional wreath. Fresh and fragrant with Bluish green needles and natural cones. The needles have a silver white underside.");

inventory[16] = new Product("Hallmark", "HPSRTH-2014", "HPSRTH-2014", "The Sorting Hat - Harry Potter - 2014 Hallmark Keepsake Ornament", 47.95M, Image.FromFile("harry.jpg"), "Hallmark 2014 The Sorting Hat Harry Potter Ornament will play dialogue from this scene when button is pushed.");

}

private void pbItem_Click(object sender, EventArgs e)

{

// увеличить изображение товара по клику

Image i = ((PictureBox)sender).Image;

frmItemImage frm = new frmItemImage(i);

frm.ShowDialog();

}

private void lstCategory_SelectedIndexChanged(object sender, EventArgs e)

{

try

{

// Заполнить поля элемента, выбранного из списка категорий (товаров)

pbItem.Image = inventory[lstCategory.SelectedIndex].Item;

lblMake.Text = inventory[lstCategory.SelectedIndex].Make;

---

lblModelDisplay.Text = inventory[lstCategory.SelectedIndex].Model;

lblSKUDisplay.Text = inventory[lstCategory.SelectedIndex].SKU;

lblDetail.Text = inventory[lstCategory.SelectedIndex].Type;

lblPrice.Text = inventory[lstCategory.SelectedIndex].Price.ToString("C");

lblDescription.Text = inventory[lstCategory.SelectedIndex].Description;

// Показать товар и информацию о нем, когда он выбирается из списка товаров

lblModel.Visible = true;

lblSKU.Visible = true;

lblEach.Visible = true;

grpDescription.Visible = true;

btnAdd.Visible = true;

btnDelete.Visible = true;

// Скрывать корзину в момент выбора товара из списка

lblCart.Visible = false;

lstCart.Visible = false;

lblSubtotal.Visible = false;

lblSubtotalDisplay.Visible = false;

btnCloseCart.Visible = false;

btnCheckout.Visible = false;

btnDelete.Visible = false;

}

catch (IndexOutOfRangeException)

{

MessageBox.Show("Выход за пределы диапазона!", "Ошибка");

}

}

private void btnAdd_Click(object sender, EventArgs e)

{

// Сопоставить товары, выбранные из списка, с их стоимостью, добавить в список покупок

lstCart.Items.Add(lstCategory.SelectedItem + " " + inventory[lstCategory.SelectedIndex].Price.ToString("C"));

decimal sum = 0.0M;

int y = 7;

// Посчитать число товаров и общую стоимость корзины

cartItem.Add(inventory[lstCategory.SelectedIndex].Item);

decBuy.Add(inventory[lstCategory.SelectedIndex].Price);

cartCount++;

// Отобразить количество товаров в корзине

lblCartCount.Text = cartCount.ToString();

for (int i = 0; i < decBuy.Count; i++)

sum += decBuy[i];

lblSubtotalDisplay.Text = sum.ToString("C");

// Отключить кнопку добавления, когда корзина заполнена (7 товаров), показать сообщение

if (lstCart.Items.Count == y)

{

btnAdd.Enabled = false;

MessageBox.Show("Вы добавили 7 товаров.", "Корзина заполнена!");

}

}

private void btnCart_Click(object sender, EventArgs e)

{

// Отобразить корзину покупок

lblCart.Visible = true;

lstCart.Visible = true;

lblSubtotal.Visible = true;

lblSubtotalDisplay.Visible = true;

btnCloseCart.Visible = true;

btnCheckout.Visible = true;

btnDelete.Visible = true;

}

private void btnCloseCart_Click(object sender, EventArgs e)

{

// Скрыть корзину покупок

lblCart.Visible = false;

lstCart.Visible = false;

lblSubtotal.Visible = false;

lblSubtotalDisplay.Visible = false;

btnCloseCart.Visible = false;

btnCheckout.Visible = false;

}

private void Checkout()

{

// Убедиться, что какие-то товары есть в корзине. Если есть, показать предварительный вывод на печать

if (lstCart.Items.Count == 0)

{

MessageBox.Show("В вашей корзине нет товаров.", "Корзина пуста!");

}

else

{

printPreviewDialog1.Document = printDocument1;

printPreviewDialog1.ShowDialog();

}

}

private void btnCheckout_Click(object sender, EventArgs e)

{

Checkout();

}

private void printPreviewToolStripMenuItem_Click(object sender, EventArgs e)

{

Checkout();

}

private void exitToolStripMenuItem_Click(object sender, EventArgs e)

{

// Закрытие формы

this.Close();

}

private void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)

{

// Переменные для подсчета общей стоимости

const decimal taxRate = .08M;

decimal sum = 0.0M;

decimal taxTotal = 0.0M;

decimal grandTotal = 0.0M;

// Проход по корзине покупок и подсчет общей стоимости

---

for (int i = 0; i < decBuy.Count; i++)

{

sum += decBuy[i];

}

// Расчет общей стоимости с НДС

taxTotal = sum * taxRate;

grandTotal = sum + taxTotal;

// Настройка параметров печати

Font headingFont = new Font("Calibri", 20);

Font generalFont = new Font("Calibri", 15);

Font listFont = new Font("Arial", 12);

Bitmap bmp = new Bitmap("logo.png");

Bitmap thumb;

float x = e.MarginBounds.Left;

float y = e.MarginBounds.Top;

// Вывод логотипа

e.Graphics.DrawImage(bmp, 275, 10);

x += 200;

// Показать слоган

e.Graphics.DrawString("''Мы пригодимся''", headingFont, Brushes.Black, x, 160);

y += headingFont.Height + 100;

// Отрисовка красной линии на счете

Pen redPen = new Pen(Color.Firebrick, 3);

Point point1 = new Point(40, 200);

Point point2 = new Point(800, 200);

e.Graphics.DrawLine(redPen, point1, point2);

// Соединить строку "Дата счета: " с текущей датой формирования чека

e.Graphics.DrawString("Дата счета: " + DateTime.Today.ToShortDateString(), generalFont, Brushes.Black, 40, 205);

// Просмотр корзины и добавление данных

for (int i = 0; i < lstCart.Items.Count; i++)

{

x = e.MarginBounds.Left;

y += 30;

thumb = new Bitmap(cartItem[i], 70, 70);

e.Graphics.DrawImage(thumb, x, y);

x += thumb.Width + 10;

y += 30;

e.Graphics.DrawString(lstCart.Items[i].ToString(), listFont, Brushes.Black, x, y);

y += listFont.Height + 20;

}

// Переменные для вывода информации платежа

string subTotal = "Промежуточный итог: " + sum.ToString("C");

string tax = "Ставка НДС: " + taxRate.ToString("P");

string totalTax = "Величина НДС: " + taxTotal.ToString("C");

string total = "Всего: " + grandTotal.ToString("C");

string message = "Спасибо за покупку в нашем интернет-магазине!";

x = 550;

y += generalFont.Height;

// Разбиение на строки всех значений

e.Graphics.DrawString(subTotal + "\n" + tax + "\n" + totalTax + "\n" + total, generalFont, Brushes.Black, x, y);

y += generalFont.Height;

// Вывод сообщения с благодарностью

e.Graphics.DrawString(message, generalFont, Brushes.Firebrick, e.MarginBounds.Left, y);

}

private void aboutToolStripMenuItem_Click(object sender, EventArgs e)

{

// отображение формы "Об авторе"

frmAbout aboutForm = new frmAbout();

aboutForm.ShowDialog();

}

private void btnDelete_Click(object sender, EventArgs e)

{

int j = lstCart.SelectedIndex;

if (j >= 0)

{

// Посчитать число товаров и общую стоимость корзины

decimal sum = 0.0M;

decBuy.RemoveAt(j);

cartItem.RemoveAt(j);

for (int i = 0; i < decBuy.Count; i++)

sum += decBuy[i];

cartCount--;

// Отобразить количество товаров в корзине

lblCartCount.Text = cartCount.ToString();

lblSubtotalDisplay.Text = sum.ToString("C");

lstCart.Items.RemoveAt(j);

}

else

{

MessageBox.Show("Не выбран номер товара для удаления. . . ", "Ошибка!");

return;

}

}

}

}

Листинг А2. Исходный код модуля FrmAbout.cs

using System;

using System.Reflection;

using System.Windows.Forms;

namespace burakAydemirFinalProject

{

partial class frmAbout : Form

{

public frmAbout()

{

InitializeComponent();

this.Text = String.Format("О приложении {0}", "Интернет-магазин");

this.labelProductName.Text = "Handy Supply";

this.labelVersion.Text = String.Format("Версия {0}", AssemblyVersion);

this.labelCopyright.Text = "Иван\u00a9 2020";

this.labelCompanyName.Text = "МОИ";

---

this.textBoxDescription.Text = "Выполнено летом 2020-го года на языке программирования C#.\r\n\r\n" +

"Среда разработки: Microsoft Visual Studio 2019 Community\r\n\r\n" +

"Благодарим за использование!";

}

#region Атрибуты сборки

public string AssemblyTitle

{

get

{

object[] attributes = Assembly.GetExecutingAssembly().GetCustomAttributes(typeof(AssemblyTitleAttribute), false);

if (attributes.Length > 0)

{

AssemblyTitleAttribute titleAttribute = (AssemblyTitleAttribute)attributes[0];

if (titleAttribute.Title != "")

{

return titleAttribute.Title;

}

}

return System.IO.Path.GetFileNameWithoutExtension(Assembly.GetExecutingAssembly().CodeBase);

}

}

public string AssemblyVersion

{

get

{

return Assembly.GetExecutingAssembly().GetName().Version.ToString();

}

}

public string AssemblyDescription

{

get

{

object[] attributes = Assembly.GetExecutingAssembly().GetCustomAttributes(typeof(AssemblyDescriptionAttribute), false);

if (attributes.Length == 0)

{

return "";

}

return ((AssemblyDescriptionAttribute)attributes[0]).Description;

}

}

public string AssemblyProduct

{

get

{

object[] attributes = Assembly.GetExecutingAssembly().GetCustomAttributes(typeof(AssemblyProductAttribute), false);

if (attributes.Length == 0)

{

return "";

}

return ((AssemblyProductAttribute)attributes[0]).Product;

}

}

public string AssemblyCopyright

{

get

{

object[] attributes = Assembly.GetExecutingAssembly().GetCustomAttributes(typeof(AssemblyCopyrightAttribute), false);

if (attributes.Length == 0)

{

return "";

}

return ((AssemblyCopyrightAttribute)attributes[0]).Copyright;

}

}

public string AssemblyCompany

{

get

{

object[] attributes = Assembly.GetExecutingAssembly().GetCustomAttributes(typeof(AssemblyCompanyAttribute), false);

if (attributes.Length == 0)

{

return "";

}

return ((AssemblyCompanyAttribute)attributes[0]).Company;

}

}

#endregion

}

}

---