This article shares the specific code for C# to implement shopping function in malls for your reference. The specific content is as follows
Product category
namespace ShoppingSystem
{
/*
* Product information includes: product name, product price, product model, product description, etc.
*/
/// <summary>
/// Product category /// </summary>
class Goods
{
/// <summary>
/// Product Name /// </summary>
private string goodName;
/// <summary>
/// Product price /// </summary>
private float goodPrice;
/// <summary>
/// Product model /// </summary>
private string[] goodModel = new string[2];
/// <summary>
/// Product category /// </summary>
private string goodType;
/// <summary>
/// Product Description /// </summary>
private string goodDescribe;
/// <summary>
/// Seller /// </summary>
private Seller seller;
public Seller Seller
{
get
{
return seller;
}
set
{
seller = value;
}
}
public string GoodName
{
get
{
return goodName;
}
set
{
goodName = value;
}
}
public float GoodPrice
{
get
{
return goodPrice;
}
set
{
goodPrice = value;
}
}
public string[] GoodModel
{
get
{
return goodModel;
}
set
{
goodModel = value;
}
}
public string GoodType
{
get
{
return goodType;
}
set
{
goodType = value;
}
}
public string GoodDescribe
{
get
{
return goodDescribe;
}
set
{
goodDescribe = value;
}
}
/// <summary>
/// Constructor, assign values to each variable and add product description /// </summary>
/// <param name="goodName">Product name</param> /// <param name="goodPrice">Product Price</param> /// <param name="goodId">Product number</param> /// <param name="goodModel">Product model</param> /// <param name="goodType">Product Category</param> public Goods(string goodName, float goodPrice, string[] goodModel, string goodType)
{
= goodName;
= goodPrice;
= goodModel;
= goodType;
goodDescribe = goodName + goodModel[0] + "|" + goodModel[1] + "|" + goodPrice + "|";
}
}
}Product Library
namespace ShoppingSystem
{
class GoodsSql
{
/// <summary>
/// Total product library /// </summary>
private Goods[] good = new Goods[20];
public Goods[] Good
{
get
{
return good;
}
set
{
good = value;
}
}
}
}User class
using System;
using ;
using ;
using ;
using ;
namespace ShoppingSystem
{
/// <summary>
/// User class /// </summary>
class User
{
/// <summary>
/// username /// </summary>
private string username;
/// <summary>
/// User balance /// </summary>
private float userBalance;
/// <summary>
/// Shopping cart /// </summary>
private ShoppingCart cart = new ShoppingCart();
public User(string username, float userBalance)
{
= username;
= userBalance;
= this;
}
public string Username
{
get
{
return username;
}
set
{
username = value;
}
}
public float UserBalance
{
get
{
return userBalance;
}
set
{
userBalance = value;
}
}
public ShoppingCart Cart
{
get
{
return cart;
}
set
{
cart = value;
}
}
/// <summary>
/// add to the cart /// </summary>
/// <param name="good">Products to be added</param> /// <param name="goodsNum">Quantity to buy</param> public void BuyGoods(Goods good, int goodsNum)
{
(good, goodsNum);
//TODO
}
/// <summary>
/// Check and clear the shopping cart /// </summary>
public void CheckoutCart()
{
();
}
}
}Seller category
using System;
namespace ShoppingSystem
{
/// <summary>
/// Seller category /// </summary>
class Seller
{
/// <summary>
/// Seller's name /// </summary>
private string sellerName;
/// <summary>
/// Seller's balance /// </summary>
private float sellerBalance;
/// <summary>
/// Seller's product array /// </summary>
private Goods[] sellerGoods = new Goods[5];
public Seller(string sellerName, float sellerBalance)
{
= sellerName;
= sellerBalance;
}
public string SellerName
{
get
{
return sellerName;
}
set
{
sellerName = value;
}
}
public float SellerBalance
{
get
{
return sellerBalance;
}
set
{
sellerBalance = value;
}
}
public Goods[] SellerGoods
{
get
{
return sellerGoods;
}
set
{
sellerGoods = value;
}
}
/// <summary>
/// New products are on the shelves /// </summary>
/// <param name="good"></param>
public void AddGood(Goods good,GoodsSql goods)
{
for (int i = 0; i < ; i++)
{
if (sellerGoods[i] == null)
{
sellerGoods[i] = good;
= this;
for (int j = 0; j < ; j++)
{
if ([j] == null)
{
[j] = good;
break;
}
}
("Add product successfully!");
break;
}
if (i == - 1)
{
("Add product failed! The maximum number of items available for listing has been reached!");
return;
}
}
}
/// <summary>
/// Update product information /// </summary>
/// <param name="good">Products to be updated</param> /// <param name="goodName">Product name</param> /// <param name="goodPrice">Product Price</param> /// <param name="goodId">Product number</param> /// <param name="goodModel">Product model</param> /// <param name="goodType">Product Type</param> public void UpdateGoodInfo(Goods good, string goodName, float goodPrice, string[] goodModel, string goodType)
{
if (good != null)
{
= goodName;
= goodModel;
= goodType;
= goodName + goodModel[0] + "|" + goodModel[1] + "|" + goodPrice + "|";
("Updated product information successfully!");
return;
}
("Update product information failed!");
}
}
}Service category
namespace ShoppingSystem
{
class Service
{
private Goods[] goods = new Goods[20];
public Goods[] Goods
{
get
{
return goods;
}
set
{
goods = value;
}
}
/// <summary>
/// Search for products by type /// </summary>
/// <param name="goodType"></param>
/// <param name="goods"></param>
public void Search(string goodType, GoodsSql goods)
{
= new Goods[20];
int count = 0;
for (int i = 0; i < ; i++)
{
if ([i] != null && [i].(goodType))
{
[count++] = [i];
}
}
}
}
}Shopping cart category
using System;
using ;
using ;
using ;
using ;
namespace ShoppingSystem
{
/// <summary>
/// Shopping cart category /// </summary>
class ShoppingCart
{
/// <summary>
/// Array of shopping entries /// </summary>
private ShoppingItems[] items;
/// <summary>
/// Total shopping fee /// </summary>
private float totalPrice = 0.00f;
/// <summary>
/// Users to which the shopping cart belongs /// </summary>
private User user;
public ShoppingItems[] Items
{
get
{
return items;
}
set
{
items = value;
}
}
public float TotalPrice
{
get
{
return totalPrice;
}
set
{
totalPrice = value;
}
}
public User User
{
get
{
return user;
}
set
{
user = value;
}
}
/// <summary>
/// Add items to cart /// </summary>
/// <param name="good">Products to be added</param> /// <param name="goodsNum">Quantity to buy</param> public void AddGoods(Goods good, int goodsNum)
{
//If the shopping cart entry is empty, instantiate the shopping cart entry array if (items == null)
{
items = new ShoppingItems[10];
}
//Add product entries to the shopping entries array for (int i = 0; i < ; i++)
{
if (items[i] == null)
{
items[i] = new ShoppingItems();
items[i].Good = good;
items[i].GoodsNum = goodsNum;
totalPrice += * goodsNum;
($"Already{}quantity：{goodsNum}，add to the cart");
break;
}
if (i == - 1)
{
("The shopping cart is full!");
}
}
}
/// <summary>
/// Check and clear the shopping cart /// </summary>
public void CheckoutCart()
{
//Judge whether the shopping cart is empty if (items == null)
{
("There is no item in your shopping cart!");
return;
}
foreach (var item in items)
{
if (item != null)
{
+= * ;
($"Product Name：{}");
}
}
($"{}The shopping cart has been cleared，Total expenses{totalPrice}Yuan");
-= totalPrice;
items = null;
//TODO
}
public void selectCart()
{
if (items == null)
{
("Your cart is empty!");
return;
}
foreach (var item in items)
{
($"{}quantity：{}");
}
}
}
}Shopping cart entry category
using System;
using ;
using ;
using ;
using ;
namespace ShoppingSystem
{
/// <summary>
/// Product entry category in the shopping cart /// </summary>
class ShoppingItems
{
/// <summary>
/// Product /// </summary>
private Goods good;
/// <summary>
/// The quantity to buy /// </summary>
private int goodsNum;
public Goods Good
{
get
{
return good;
}
set
{
good = value;
}
}
public int GoodsNum
{
get
{
return goodsNum;
}
set
{
goodsNum = value;
}
}
}
}desk
Actually, there should be a lot of things here. I'm lazy and don't do it anymore
using System;
namespace ShoppingSystem
{
/// <summary>
/// Software usage class /// </summary>
class SoftwareUsage
{
/// <summary>
/// Get user instructions /// </summary>
/// <returns></returns>
public string Order()
{
("Please enter the command first:");
("0-Exit, 1-Search, 2-Purchase, 3-Empty and settle the shopping cart, 4-Inquiry shopping cart");
return ();
}
}
}Program entry main function:
using System;
namespace ShoppingSystem
{
class Program
{
static void Main(string[] args)
{
GoodsSql goodsSql = new GoodsSql();
Service service = new Service();
User user = new User("Yue Xiang", 10000000.00f);
SoftwareUsage use = new SoftwareUsage();
Seller seller01 = new Seller("Seller 1", 10000.00f);
Seller seller02 = new Seller("Seller 2", 10000.00f);
Seller seller03 = new Seller("Seller 3", 10000.00f);
Goods good01 = new Goods("The beauty of programming(books)", 120.00f, new string[]{ "quality", "Normal Edition" }, "books");
Goods good02 = new Goods("The beauty of programming(books)", 145.00f, new string[]{ "quality", "Hardcover" }, "books");
Goods good03 = new Goods("Sanmao Wandering(books)", 20.00f, new string[]{ "quality", "Normal Edition" }, "books");
Goods good04 = new Goods("Sanmao Wandering(books)", 25.00f, new string[]{ "quality", "Hardcover" }, "books");
Goods good05 = new Goods("iPhone 100(cell phone)", 6000.00f, new string[]{ "RAM", "64GB" }, "cell phone");
Goods good06 = new Goods("iPhone 100(cell phone)", 7000.00f, new string[]{ "RAM", "128GB" }, "cell phone");
Goods good07 = new Goods("iPhone 100(cell phone)", 9000.00f, new string[]{ "RAM", "512GB" }, "cell phone");
Goods good08 = new Goods("Nokia(cell phone)", 1000.00f, new string[]{ "model", "E63" }, "cell phone");
Goods good09 = new Goods("Nokia(cell phone)", 2000.00f, new string[]{ "model", "N95" }, "cell phone");
Goods good10 = new Goods("Nokia(cell phone)", 2300.00f, new string[]{ "model", "N97" }, "cell phone");
Goods good11 = new Goods("Mac Book Pro(computer)", 18000.00f, new string[]{ "Configuration", "Low version" }, "computer");
Goods good12 = new Goods("Mac Book Pro(computer)", 20000.00f, new string[]{ "Configuration", "Middle version" }, "computer");
Goods good13 = new Goods("Mac Book Pro(computer)", 22000.00f, new string[]{ "Configuration", "High-end version" }, "computer");
(good01, goodsSql);
(good02, goodsSql);
(good03, goodsSql);
(good04, goodsSql);
(good05, goodsSql);
(good06, goodsSql);
(good07, goodsSql);
(good08, goodsSql);
(good09, goodsSql);
(good10, goodsSql);
(good11, goodsSql);
(good12, goodsSql);
(good13, goodsSql);
();
while (true)
{
string order = ();
switch (order)
{
case "0":
("Shopping is over!");
return;
case "1":
("Please enter the search keyword:");
string goodType = ();
(goodType, goodsSql);
Goods[] goods = ;
($"Current buyer{}Searching for products：{goodType}");
("-----------------------");
foreach (var item in goods)
{
if (item != null)
{
($"Product Name：{}，Product Type（{[0]}）" +
$"{[1]},{}Yuan");
}
}
("-----------------------");
break;
case "2":
if ([0] == null)
{
("Please search and purchase first!");
break;
}
("Please enter the product number first:");
int goodId = (());
("Please enter the quantity of the product first:");
int goodsNum = (());
([goodId - 1], goodsNum);
("-----------------------");
break;
case "3":
();
($"Account balance：{}");
break;
case "4":
();
break;
default:
("The command you entered is incorrect!");
break;
}
}
}
}
}The above is all the content of this article. I hope it will be helpful to everyone's study and I hope everyone will support me more.