在c＃控制檯應用程序中按下按鈕時添加項目

Question

我一直在研究一個包含項目列表的小控制檯應用程序，並且當按下一個數字時，相關項目應計算爲總數（完成後）。

問題在於如何將這些項目添加到列表視圖並在控制檯應用程序中顯示它們。這是我到目前爲止有

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Text; 

namespace SuperMarcado 
{ 
    class MainClass 
    { 
     public static void Main(string[] args) 
     { 

      ShoppingCart myCart = new ShoppingCart(); 

      Product[] shopProducts = new Product[] 
      { 
       new Product("Cheese", 6, "Milk Cheese", "3/12/2016", 4), 
       new Product("Bread", 2, "Grain Bread", "27/11/2016", 8), 
       new Product("Ice Cream", 10, "Ice Cream", "09/11/2001", 1), 
       new Product("Cookies", 100, " Chocolate Cookies", "00/00/0000", 5), 
       new Product("Biscuits", 0.25f, "Vanila ", "08/01/2006", 6) 
      }; 

      Shop shop = new Shop(shopProducts); 
      shop.DisplayProducts(); 
      Console.WriteLine("------------------------------------------------------------"); 

      myCart.printY = Console.CursorTop; 
      myCart.Display(); 
      ConsoleKeyInfo input; 


      while ((input = Console.ReadKey(true)).Key != ConsoleKey.Escape) 
      { 
       if (!Char.IsDigit(input.KeyChar)) 
        return; 
       int index = Convert.ToInt16(input.KeyChar.ToString()) - 1; 

       if (index < 1 || index > shop.products.Length) 
        return; 

       myCart.AddProduct(shop.products[index]); 

       shop.DecreaseAmount(shop.products[index]); 

       shop.DisplayProducts(); 

       myCart.Display(); 



       int userInput = 0; 
       do 
       { 

        userInput = ShoppingCart(); 

       } while (userInput != 5); 
      } 

     } 
     static public int ShoppingCart() 
     { 
      Console.WriteLine("Your cart"); 
      Console.WriteLine(); 
      var result = Console.ReadLine(); 
      return Convert.ToInt32(result); 
     } 


    } 
} 

Answer 1

在第一次拿到，你的問題是第二個循環，刪除它，它應該工作打算

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Text; 

namespace SuperMarcado 
{ 
class MainClass 
{ 
    public static void Main(string[] args) 
    { 

     ShoppingCart myCart = new ShoppingCart(); 

     Product[] shopProducts = new Product[] 
     { 
      new Product("Cheese", 6, "Milk Cheese", "3/12/2016", 4), 
      new Product("Bread", 2, "Grain Bread", "27/11/2016", 8), 
      new Product("Ice Cream", 10, "Ice Cream", "09/11/2001", 1), 
      new Product("Cookies", 100, " Chocolate Cookies", "00/00/0000", 5), 
      new Product("Biscuits", 0.25f, "Vanila ", "08/01/2006", 6) 
     }; 

     Shop shop = new Shop(shopProducts); 
     shop.DisplayProducts(); 
     Console.WriteLine("------------------------------------------------------------"); 

     myCart.printY = Console.CursorTop; 
     myCart.Display(); 
     ConsoleKeyInfo input; 


     while ((input = Console.ReadKey(true)).Key != ConsoleKey.Escape) 
     { 
      if (!Char.IsDigit(input.KeyChar)) 
       return; 
      int index = Convert.ToInt16(input.KeyChar.ToString()) - 1; 

      if (index < 1 || index > shop.products.Length) 
       return; 

      myCart.AddProduct(shop.products[index]); 

      shop.DecreaseAmount(shop.products[index]); 

      shop.DisplayProducts(); 

      myCart.Display(); 



      //int userInput = 0; 
      //do 
      //{ 

      // userInput = ShoppingCart(); 

      //} while (userInput != 5); 
     } 

    } 

    //static public int ShoppingCart() 
    //{ 
    // Console.WriteLine("Your cart"); 
    // Console.WriteLine(); 
    // var result = Console.ReadLine(); 
    // return Convert.ToInt32(result); 
    //} 
} 
} 

我的購物類

using System; 
using System.Collections.Generic; 

namespace SuperMarcado 
{ 
internal class ShoppingCart 
{ 
    internal int printY; 
    internal List<Product> productList; 

    public ShoppingCart() 
    { 
     productList = new List<Product>(); 
    } 

    internal void Display() 
    { 
     if (productList.Count == 0) 
      Console.WriteLine("------------------ EMPTY CART------------------ "); 

     foreach (var prod in productList) 
      Console.WriteLine(prod.Name + " value: " + prod.Value); 
    } 

    internal void AddProduct(Product product) 
    { 
     productList.Add(product); 
    } 
} 
}