Question

我正在做一个简单的股票系统。这是我在库存中添加商品的方法。

如何添加选项以按文章的code搜索某篇文章以查找相应文章的名称？

这些是我的清单：

public static List<string> item = new List<string>();
public static List<string> code = new List<string>();
public static List<string> price = new List<string>();
public static List<string> unit = new List<string>();

添加项目的方法：

public static void addItem()
{
    Console.Clear();
    Console.Write("\nNumber of items to add: ");
    count = Convert.ToInt32(Console.ReadLine());
    Console.WriteLine("Insert the items:");
    for (int i = 1; i <= count; i++)
    {
        Console.WriteLine("\nItem[" + i + "]: ");
        Console.Write("Item[" + i + "]: ");
        item.Add(Console.ReadLine());

        Console.Write("Code[" + i + "]: ");
        code.Add(Console.ReadLine());

        Console.Write("Price[" + i + "]: ");
        price.Add(Console.ReadLine());

        Console.Write("Unit[" + i + "]: ");
        unit.Add(Console.ReadLine());
    }
}

搜索项目的方法：

public static void searchItem()
{       
    Console.WriteLine("Type the code to search an article");
    string code2 = Console.ReadLine();
    for (int i = 0;; i++)
    {
       if (code.Contains(code2))
       {
          Console.WriteLine("The item are: " + item[i]);
       }
     }
}

Answer 1

执行Diligent Key Presser建议的内容 - 引入一个描述单个项目的专用类 - 而不是：

public static List<string> item = new List<string>();
public static List<string> code = new List<string>();
public static List<string> price = new List<string>();
public static List<string> unit = new List<string>();

有这个：

public class MyClass
{
    public string Item {get;set;}
    public string Code {get;set;}
    public string Price {get;set;}
    public string Unit {get;set;}
}

public static List<MyClass> item = new List<MyClass>();

将addItem()更改为：

public static void addItem()
{
    Console.Clear();
    Console.Write("\nNumber of items to add: ");
    count = Convert.ToInt32(Console.ReadLine());
    Console.WriteLine("Insert the items:");
    for (int i = 0; i < count; i++) //note use of zero-based array
    {
        item.Add(new MyClass());

        Console.WriteLine("\nitem[" + i + "]: ");
        Console.Write("item[" + i + "].Item: ");
        item[i].Item = Console.ReadLine();

        Console.Write("item[" + i + "].Code: ");
        item[i].Code = Console.ReadLine();

        Console.Write("item[" + i + "].Price: ");
        item[i].Price = Console.ReadLine());

        Console.Write("item[" + i + "].Unit: ");
        item[i].Unit = Console.ReadLine();
    }
}

将searchItem()更改为：

public static void searchItem()
{       
    Console.WriteLine("Type the code to search an article");
    string code = Console.ReadLine();

    for (int i = 0; i < item.Count; i++)
    {
       if (item[i].Code == code)
       {
          Console.WriteLine("The item's Item is: " + item[i].Item);
          Console.WriteLine("The item's Code is: " + item[i].Code);
          Console.WriteLine("The item's Price is: " + item[i].Price);
          Console.WriteLine("The item's Unit is: " + item[i].Unit);
       }
     }
}

如何在List中搜索

1 个答案: