如何循环Console.ReadLine？

Question

我不知道如何在循环中读取用户输入(用Console.ReadLine)。我正在创建一个便条，它允许我存储用户输入的内容，如果他输入了exit，就退出。

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

namespace ConsoleApplication4
{
    class Program
    {
        static void Main(string[] args)
        {

            Note myNote = new Note();
            Note otherNote = new Note();
            myNote.addText("Hi there");
            Console.WriteLine(myNote.display());
            otherNote.addText(Console.ReadLine());
            Console.WriteLine(otherNote.display());
            if (otherNote = "exit")
            {

            }

        }
    }


}


    class Note
{
    private string text = "";
    private DateTime timeStamp = DateTime.Now;
    private DateTime modifiedStamp = DateTime.Now;
    int maxLength = 10;


    public void addText(string sometext)
    {
        if (text.Length + sometext.Length < maxLength)
        {
            text += sometext;
            modifiedStamp = DateTime.Now;
        }

    }

    public string display()
    {
        return "Created: " + timeStamp.ToString() + "\n" +
            "Modified: " + modifiedStamp.ToString() + "\n" +
            "Content: " + text;
    }
}

Answer 1

您需要备注列表，以便添加任意数量的注释。此外，如果用户确实要求退出，则需要首先保存ReadLine输入检查，否则继续添加注释。

var myNotes = new List<Note>();
var firstNote = new Note();
firstNote.addText("Hi there");

Note note;
while (true)
{
    var input = Console.ReadLine();
    if (input.Equals("exit", StringComparison.OrdinalIgnoreCase))
    {
        break;
    }
    note = new Note();
    note.addText(input);
    myNotes.Add(note);
}

Answer 2

通常的格式是使用类似这样的东西(带中断条件的while循环)：

// put code above while loop that only needs to be executed once
while (true) {        
    // get the user input for every iteration, allowing to exit at will
    String line = Console.ReadLine();
    if (line.Equals("exit")) {
        // exit the method.
        return; // use "break" if you just want to exit the loop
    }
    // this is what will happen in the loop body since we didn't exit
    // put whatever note stuff you want to execute again and again in here
}

您需要编辑这个循环正文中的内容，具体取决于您想要对便笺实例做什么。但是通常情况下，您会反复提示用户输入，直到满足某些条件，然后才退出循环。你可以决定这个条件(例如“输入10条音符”；“输入出口”等)。

Answer 3

Per @n0rd的评论，下面是do...while循环的工作方式：

string input;
var myNotes = new List<Note>();
do{
    input = Console.ReadLine();
    if (!input.Equals("exit", StringComparison.OrdinalIgnoreCase)){
        var note = new Note();
        note.addText(input);
        myNotes.Add(note);
    }
} while (!input.Equals("exit", StringComparison.OrdinalIgnoreCase));