将字符串添加到列表<;字符串>;在列表内部<;列表<;字符串>>;

本文关键字:lt 字符串 列表 gt 内部 添加 | 更新日期: 2023-09-27 18:28:19

我试图在for&while循环,尝试使用vari作为我希望使用的列表对象。

这是课程的代码,如果能帮助我做错事,我们将不胜感激:)

public class GenClass
{
    private static int _genCount;
    private static bool _filesLoadedToLists;
    private static List<string> _nounSetOne = new List<string>();
    private static List<string> _nounSetTwo = new List<string>();
    private static List<List<string>> _toLoad = new List<List<string>>();
    private string _emotionMidTrim = "";
    public const string FileOne = "NounSetOne.txt";
    public const string FileTwo = "NounSetTwo.txt";
    public GenClass()
    {
        while (_filesLoadedToLists == false)
        {
            TextToList(FileOne,FileTwo);
            _filesLoadedToLists = true;
        }
        _genCount++;
    }

问题出在类的这一部分

    public void TextToList(string fileOne, string fileTwo)
    {
        List<string> filesToRead = new List<string>();
        filesToRead.Add(fileOne); // Add the text files to read to a list
        filesToRead.Add(fileTwo); // Add the text files to read to a list
        _toLoad.Add(_nounSetOne); // Add a list of words to this list
        _toLoad.Add(_nounSetTwo); // Add a list of words to this list
        for (int i = 0; i <= filesToRead.Count; i++)
        {
             using (var reader = new StreamReader(filesToRead[i]))
             {
                 string line;
                 while ((line = reader.ReadLine()) != null)
                 {
                     _toLoad[i.Add(line)]; // the error is here
                 }
             }
        }

将字符串添加到列表<;字符串>;在列表内部<;列表<;字符串>>;

尝试使用File.ReadAllLines()。将for循环替换为:

foreach(var file in filesToRead) {
  _toLoad.Add(File.ReadAllLines(file).ToList());
}

您是正确的,有了错误,您需要了解

List<List<string>>将取一个List<string>,而不是一个字符串

试试这样的东西;

List<string> listOfString = new List<string>;
for (int i = 0; i <= filesToRead.Count; i++)
{
      using (var reader = new StreamReader(filesToRead[i]))
      {
           string line;
           while ((line = reader.ReadLine()) != null)
           {
             listOfString.add(line);
           }
      }
}

然后,

_toLoad.add(listOfStrings);

使用LINQ:可以大大减少这种情况

List<string> filesToRead = new List<string> {"NounSetOne.txt", "NounSetTwo.txt"};
List<List<string>> _toLoad = new List<List<string>>();
_toLoad.AddRange(filesToRead.Select(f => File.ReadAllLines (f).ToList() ));

请注意,文件名没有多余的变量(如果它们的唯一目的是添加到列表中,为什么要使用FileOne/FileTwo?)并且我们让AddRange负责自动为我们创建List<string>

for (int i = 0; i <= filesToRead.Count; i++)
    {
         using (var reader = new StreamReader(filesToRead[i]))
         {
             string line;
             while ((line = reader.ReadLine()) != null)
             {
                 _toLoad[i].Add(line);
             }
         }
    }