Question

在我的C＃程序中（此时）我的表单中有两个字段。一个是使用列表框的单词列表;另一个是文本框。我已经能够从文本文件成功地将大单词列表加载到列表框中。我还可以通过这种方式将列表框中的所选项目显示在文本框中：

private void wordList_SelectedIndexChanged(object sender, EventArgs e)
     {
          string word = wordList.Text;
          concordanceDisplay.Text = word;
     }

我需要另一个本地文件来显示文本框中的一些内容。在此文件中，每个词条（如字典中）前面都有一个＃。所以，我想取变量'word'并在这个本地文件中搜索以将条目放入文本框中，如下所示：

#headword1
    entry is here...
    ...
    ...
#headword2
    entry is here...
    ...
    ...
#headword3
    entry is here...
    ...
    ...

您将获得文本文件的格式。我只需要在该单词之前用＃搜索正确的词条，然后从那里复制所有信息直到文件中的下一个哈希值，并将其放在文本框中。

显然，我是新手，所以要温柔。非常感谢。

P.S。我使用StreamReader来获取单词列表并将其显示在列表框中，如下所示：

StreamReader sr = new StreamReader("C:\\...\\list-final.txt");
       string line;
       while ((line = sr.ReadLine()) != null)
       {
           MyList.Add(line);
       }
       wordList.DataSource = MyList;

Answer 1

var sectionLines = File.ReadAllLines(fileName) // shortcut to read all lines from file
    .SkipWhile(l => l != "#headword2") // skip everything before the heading you want
    .Skip(1) // skip the heading itself
    .TakeWhile(l => !l.StartsWith("#")) // grab stuff until the next heading or the end
    .ToList(); // optional convert to list

Answer 2

string getSection(string sectionName)
{
    StreamReader sr = new StreamReader(@"C:\Path\To\file.txt");
    string line;
    var MyList = new List<string>();
    bool inCorrectSection = false;
    while ((line = sr.ReadLine()) != null)
    {
        if (line.StartsWith("#"))
        {
            if (inCorrectSection)
                break;
            else
                inCorrectSection = Regex.IsMatch(line, @"^#" + sectionName + @"($| -)");
        }
        else if (inCorrectSection)
            MyList.Add(line);
    }
    return string.Join(Environment.NewLine, MyList);
}

// in another method
textBox.Text = getSection("headword1");

以下几种方法可以检查该部分是否匹配，粗略地说明了它们在检测正确部分名称方面的准确程度：

// if the separator after the section name is always " -", this is the best way I've thought of, since it will work regardless of what's in the sectionName
inCorrectSection = Regex.IsMatch(line, @"^#" + sectionName + @"($| -)");
// as long as the section name can't contain # or spaces, this will work
inCorrectSection = line.Split('#', ' ')[1] == sectionName;
// as long as only alphanumeric characters can ever make up the section name, this is good
inCorrectSection = Regex.IsMatch(line, @"^#" + sectionName + @"\b");
// the problem with this is that if you are searching for "head", it will find "headOther" and think it's a match
inCorrectSection = line.StartsWith("#" + sectionName);

C＃从两个哈希之间的文件中获取文本

2 个答案: