请按照C＃代码中的说明帮助我输出 [英] please help me with the output as instructed within the C# code

问题描述

鉴于以下代码段，开发TODO评论所需的功能：

 使用系统; 
 使用 System.Collections.Generic; 
 使用 System.Collections.ObjectModel; 
 使用 System.Linq; 
 使用 System.Text; 
 使用 System.Threading.Tasks; 
 
 命名空间 ConsoleApplication1 
 {
  class 计划
 {
 静态  void  Main（ string  [] args）
 {
 ObservableCollection< MyItems> _list1 =  new  ObservableCollection< MyItems>（）; 
 _list1.Add（ new  MyItems（  A001， 除臭剂， 10 ））; 
 _list1.Add（ new  MyItems（  A0ZZ， 发胶， 20 ））; 
 _list1.Add（ new  MyItems（  A002， 牙膏， 30 ））; 
 _list1.Add（ new  MyItems（  0001，  Advacado， 0 ））; 
 
 ObservableCollection< MyItems> _list2 =  new  ObservableCollection< MyItems>（）; 
 
 _list2.Add（ new  MyItems（  A001， 除臭剂， 10 ））; 
 _list2.Add（ new  MyItems（  A002， 牙膏， 30 ））; 
 
  / *   TODO：开发逻辑，将添加_list1中尚未存在的所有项目进入_list2。应根据以下规则将项目添加到特定的
 *索引位置：如果DisplaySequence不等于零，则根据
 *插入到该值的正确位置;如果DisplaySequence等于零，则根据ItemName按字母顺序插入。以下foreach语句应按以下顺序输出
 *：
 * 
 * 0001  -  Advacado 
 * A001  - 除臭剂
 * A0ZZ  - 发胶
 * A002  - 牙膏
 * /  
 
  foreach （ var  i  in  _list2）
 {
 Console.WriteLine（i.ItemName +    -  + i.ItemDescription）; 
} 
 
 Console.WriteLine（ 按任意键退出。< /跨度>）; 
 Console.ReadKey（）; 
} 
} 
 
  class  MyItems 
 {
  public  MyItems（ string  _itemName， string  _itemDescription， int  _displaySequence）
 {
 ItemName = _itemName; 
 ItemDescription = _itemDescription; 
 DisplaySequence = _displaySequence; 
} 
 
  public   string  ItemName {获得;  set ; } 
  public   string  ItemDescription { get ;  set ; } 
  public   int  DisplaySequence { get ;  set ; } 
} 
} 

解决方案

想一想。这很简单。

ObservableCollection有几个方法 [ ^ ]，如：添加，插入，包含， IndexOf 。使用它们完成待办事项列表中列出的任务。 ;）

Given the following segment of code, develop the functionality desired at the TODO comment :

using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            ObservableCollection<MyItems> _list1 = new ObservableCollection<MyItems>();
            _list1.Add(new MyItems("A001", "Deodorant", 10));
            _list1.Add(new MyItems("A0ZZ", "Hairspray", 20));
            _list1.Add(new MyItems("A002", "Toothpaste", 30));
            _list1.Add(new MyItems("0001", "Advacado", 0));

            ObservableCollection<MyItems> _list2 = new ObservableCollection<MyItems>();

            _list2.Add(new MyItems("A001", "Deodorant", 10));
            _list2.Add(new MyItems("A002", "Toothpaste", 30));

            /* TODO: Develop logic that will add all items from _list1 that are not already present into _list2.  Items should be added into specific 
          * index positions according to the following rule: if DisplaySequence is not equal to zero, insert into the correct position according 
          * to that value; if DisplaySequence is equal to zero insert alphabetically according to the ItemName. The below foreach statement should
          * output in the following order:
          * 
          * 0001 - Advacado
          * A001 - Deodorant
          * A0ZZ - Hairspray
          * A002 - Toothpaste
          */

            foreach (var i in _list2)
            {
                Console.WriteLine(i.ItemName + " - " + i.ItemDescription);
            }

            Console.WriteLine("Press any key to exit.");
            Console.ReadKey();
        }
    }

    class MyItems
    {
        public MyItems(string _itemName, string _itemDescription, int _displaySequence)
        {
            ItemName = _itemName;
            ItemDescription = _itemDescription;
            DisplaySequence = _displaySequence;
        }

        public string ItemName { get; set; }
        public string ItemDescription { get; set; }
        public int DisplaySequence { get; set; }
    }
}

解决方案

Think of it. It's quite simple.
ObservableCollection has got several methods[^], like: Add, Insert, Contains, IndexOf. Use them to finish tasks listed on your ToDo list. ;)

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