如何在2d数组的多重构造函数中覆盖ToString？

Question

来自C＃初学者的问题，无法在Web中找到解决方案。

这是带有二维数组的构造函数

public MineSweeperBoard（）{//新的木板= new BoardItem [MineSweeper_Constants.RowNum，> MineSweeper_Constants.ColNum]; //放置地雷并设置值InitialiseBoard（）;
}

private BoardItem [,] board;

board.ToString无法正常工作，它返回类型而不是覆盖它。

public override string ToString()
{
    string a = "";
    for (int j = 0; j < MineSweeper_Constants.ColNum; j++)
    {
        for (int i = 0; i < MineSweeper_Constants.RowNum; i++)
        {
            a += board[i, j].ToString();
        }
    }
}

这是另一个构造器BoardItem：

public BoardItem(char a)
{
    this.itemContents = a;
    this.visibleItemContents = ProjectTwo.MineSweeper_Constants.character[10];
}

这里BoardItem.ToString()正在工作。

public override string ToString()
{
    char[] b = new char[1];
    b[0] = GetVisibleItemContents();
    string a = new string(b);
    return a;            
}

如何用覆盖ToString打印板子的字符串（我的老师说我必须使用此字符串）？

>{
>    class BoardItem
>    {
>        readonly char itemContents;
>        char visibleItemContents;
>
>        public BoardItem(char a)
>        {
>            // 1. The actual contents of the item (use Minesweeper_Constants) 
>            this.itemContents = a;
>
>            // 2. The visible contents of the item (use Minesweeper_Constants) and set to >unknown
>            this.visibleItemContents = ProjectTwo.MineSweeper_Constants.character[10];
>        }
>
>        public char GetItemContents()
>        {
>            return this.itemContents;
>        }
>
>        public override string ToString()
>        {
>                char[] b = new char[1];
>               b[0] = GetVisibleItemContents();
>                string a = new string(b);
>                return a;
>            
>        }
>   
>    }
>}
>

另一堂课

enter code here

>    class MineSweeperBoard
>    {
>        private BoardItem [,] board;
>        protected static int[,] mineLocation;
>        protected static int numberOfMine;
>public MineSweeperBoard()
>        {
>            // new board
>            board = new BoardItem[MineSweeper_Constants.RowNum, >MineSweeper_Constants.ColNum];
>            // put mines and set value
>            InitialiseBoard();            
>        }
>public override string ToString()
>{
>    string a = "";
>    for (int j = 0; j < MineSweeper_Constants.ColNum; j++)
>    {
>        for (int i = 0; i < MineSweeper_Constants.RowNum; i++)
>        {
>            a += board[i, j].ToString();
>        }
>    }
>}        

主类：

enter code here

>static void Main(string[] args){
>GameLoop()
>}
>GameLoop(){
MineSweeperBoard board = new MineSweeperBoard();
>Console.WriteLine(board.ToString());
>}

Answer 1

您可以执行以下操作：

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

namespace Board
{
    class Program
    {
        static void Main(string[] args)
        { 
            // Create the board
            Board b = new Board();
            // Print the maze
            Console.Write(b.ToString());
            Console.ReadKey();
        }
    }

    class Board
    {
        private BoardItem[,] items = new BoardItem[10, 10];

        // Board contructor - populate the multidimensional array - do you own login here to populate the cells.
        public Board()
        {
            for (int i = 0; i < 10; i++)
            {
                for (int j = 0; j < 10; j++)
                {                        
                    items[i, j] = new BoardItem();
                }
            }
        }

        // Print each cell from the MineSweeper
        public override string ToString()
        {
            string ret = "";
            for (int i = 0; i < 10; i++)
            {
                for (int j = 0; j < 10; j++)
                {
                    ret += items[i, j].ToString();
                }
                ret += Environment.NewLine;
            }

            return ret;
        }
    }

    class BoardItem
    {
        char BoardItemCharToPriint = '-';

        // Print the current cell
        public override string ToString()
        {
            return BoardItemCharToPriint.ToString();
        }
    }
}

如您所见，我创建了一个包含类的Board类的Board类。 每个类都有其ToString（）方法被覆盖。 如果您执行类似的操作，则可以通过重写ToString方法来按老师的要求完成任务。