如何将随机字符串数组“单词”转换为由字符串的字符 C# 组成的数组？

Question

好的，所以我正在创建一个刽子手游戏（跛脚，我知道，但我必须从某个地方开始）。我已经成功地将大约 30 个随机单词从文本文件中提取到一个变量中，并且可以在屏幕上以随机顺序正确显示该单词（只是为了测试并确保该变量以随机顺序获取整个单词）。

但我需要将该字符串分解为单个字符，以便“删除”用户“猜测”的字母。我认为数组是做到这一点的最佳方式——再加上一个 while 循环，该循环将在字符 != null 时运行。

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

namespace Hangman
{
class Program
{
    static void Main(string[] args)
    {
        String[] myWordArrays = File.ReadAllLines("WordList.txt");
        Random randomWord = new Random();
        int lineCount = File.ReadLines("WordList.txt").Count();            
        int activeWord = randomWord.Next(0, lineCount);

        /*CharEnumerator activeWordChar = activeWord; --- I have tried this, 
        but it says "Cannot implicitly convert type 'int' to 'System.CharEnumerator' 
        --- while redlining "activeWord." */

        /*CharEnumerator activeWordChar = activeWord.ToString 
        -- I have tried this but it says "Cannot convert method group 'ToString' to 
        non-delegate type 'System.CharEnumerator'. Did you intend to invoke the method?

         I also tried moving the declaration of activeWordChar below the 'writeline' 
         that displays the word properly to the console. 

         I have even tried to create a Char[] activeWordChar = activeWord.toCharArray; But this doesn't work either. 
         */            

        //I'm using this writeline "the word for this game is: " ONLY to test that the 
        //system is choosing random word **end comment

        Console.WriteLine("The Word for this game is: " + myWordArrays[activeWord]);



        //Console.WriteLine("The Characters are like this: " + activeWordChar[]); 
        //my attempt at printing something, but it doesn't work. :(
        Console.ReadLine();


    }


  }
}

我愿意参考参考资料以便自己弄清楚，但我有点卡在这里。

另外，如果需要，我如何关闭我打开的文件，以便以后可以在程序中访问它？我只学习了 'variable.Close();' 的 StreamReader("filename") 方式- 但这在这里行不通。

编辑

为什么有人会否决这个问题，这超出了我的理解。哈哈

Answer 1

这里有几点（首先，你有一个很好的开始）：

1. 您不必要地重新读取文件以获取行数。您可以使用myWordArrays.Length 设置您的lineCount 变量
2. 关于您关于关闭文件的问题，MSDN File.ReadAllLines() 会在文件读取完成后关闭文件，因此您可以使用已有的文件。

就按索引访问和访问其Length 属性而言，可以将字符串本身视为数组。还可以像这样隐式地迭代它：

foreach (char letter in myWordArrays[activeWord])
{
// provide a blanked-out letter for each char
}

Answer 2

您可以通过其索引访问字符串中的任何字符，因此您可以将字符串视为字符数组：

比如像这样sn-p：

string word = "word";
char w1 = word[0];
Console.WriteLine(w1);

Answer 3

您可以按如下方式简化代码。以前您的 activeWord 变量是整数，因此无法转换为字符数组。

static void Main(string[] args)
{
    String[] myWordArrays = File.ReadAllLines("WordList.txt");
    Random random = new Random();           
    string activeWord = myWordArrays[random.next(myWordArrays.Length)];
    char[] chars = activeWord.ToCharArray();
}

但是，C# 中的字符串可以被视为可枚举对象，因此只有在需要更改字符串的某些部分时才应该使用字符数组。

Answer 4

多亏了 Sven，我才能够弄清楚，并且还能够在上面添加一些东西！！我发布这个是为了让其他新手从新手的角度理解：

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

namespace Hangman
{
class Program
  {
    static void Main(string[] args)
    {
        printWord();                                          


    }

    /*I created a method to perform this, so that I can have the program stay open for 
    either 1) a new game or 2) just to see if I could do it. It works!*/

    private static void printWord()
    {
        String[] myWordArrays = File.ReadAllLines("WordList.txt");
        Random randomWord = new Random();
        //int lineCount = File.ReadLines("WordList.txt").Count();

        //The line below fixed my previous issue of double-reading file            
        int activeWord = randomWord.Next(0, myWordArrays.Length);

        string userSelection = "";

        Console.WriteLine("Are you Ready to play Hangman? yes/no: ");
        userSelection = Console.ReadLine();
            if(userSelection == "yes")
            {
                /*This runs through the randomly chosen word and prints an underscore in 
                place of each letter - it does work and this is what fixed my 
                previous issue - thank you Sven*/

                foreach(char letter in myWordArrays[activeWord])
                {
            Console.Write("_ ");

                }

                //This prints to the console "Can you guess what this 'varyingLength' letter word is?" - it does work.
                Console.WriteLine("Can you guess what this "+ myWordArrays[activeWord].Length +" letter word is?");
                Console.ReadLine();
            } 
            //else if(userSelection=="no") -- will add more later

    }


  }
}