如何在特定文本后逐行将文本文件存储到临时列表<string>

Question

我想在读取文本文件后逐行存储。但是，存储到临时列表中的文本必须在“：”之后。

下面是我的文本文件中的内容示例：

Name: Johny
Age: 18
Favourite: Basketball, Food

我想将 Johny 存储为列表[0]，将 18 存储为列表[1]，等等。对于收藏夹，应该分开存储，例如篮球作为列表[2]，食物作为列表[3]等。这是因为我需要在之后将它放回不同的文本框。

下面是我的示例代码：

private void storeDataList()
    {
        OpenFileDialog ofd = new OpenFileDialog();
        ofd.DefaultExt = ".txt";
        ofd.Filter = "Text Document (*.txt) | *.txt";
        string filename = ofd.FileName;
        string line = "";
        if (ofd.ShowDialog() == true)
        {
            StreamReader sr = new StreamReader(ofd.FileName);
            while (line != null)
            {
                for (int i = 0; i < 10; i++)
                {
                    List<string> elements = new List<string>();
                    string readText = File.ReadAllText(filename);
                    i = readText.LastIndexOf(": ");
                    elements.Add[i];
                }
            }
            sr.Close();
            detailsTextBox.Text = File.ReadAllText(filename);
        }
    }

Answer 1

这是一个带有 LINQ 的单行代码，它将文件读入行，在 : 上拆分行并获取后面的内容，然后在 , 上拆分以进一步细化：

var output = File.ReadAllLines(filename).SelectMany(l => l.Split(':')[1].Split(',').Select(s => s.Trim());

输出列表：Johny, 18, Basketball, Food.

Answer 2

您可以：

逐行阅读
分隔字段，用:定界符
分割
每三行检查一次
用逗号分隔符分割喜欢的值,

使用 trim 清除值以删除空格

  private void storeDataList()
  {
      OpenFileDialog ofd = new OpenFileDialog();
      ofd.DefaultExt = ".txt";
      ofd.Filter = "Text Document (*.txt) | *.txt";
      string filename = ofd.FileName;
      string line = "";
      if (ofd.ShowDialog() == true)
      {
          List<string> elements = new List<string>();

          using (var reader = new StreamReader(ofd.FileName))
          {
              int rowNumber = 1;

              //Dynamically stop the loop until the end of the stream
              while (!reader.EndOfStream)
              {
                  //Split to separate field name and values
                  var textLine = reader.ReadLine().Split(':');

                  //Since favorite fields are in multiples of three, we re-split the value by comma every three line
                  if (rowNumber % 3 == 0)
                  {
                      var favouriteArr = textLine[1].Split(',');

                      for (int i = 0; i < favouriteArr.Length; i++)
                      {
                          //trim to clean whitespace
                          elements.Add(favouriteArr[i].Trim());
                      }
                  }
                  else
                  {
                      elements.Add(textLine[1].Trim());
                  }
                  rowNumber++;
              }
          }

          // # just a new delimiter to print the elements in a text box
          detailsTextBox.Text = string.Join('#', elements);
      }
  }

如何在特定文本后逐行将文本文件存储到临时列表<string>

How to store text file line by line into temporary list<string> after specific text

c#

wpf

list

read-data