c# – 在关键字后获得2个换行符

我正在编写一个代码,可以扫描多个.docx文件中的关键字,然后将整个句子输出,直到换行符.

这个函数效果很好,我得到包含关键字的每个句子,直到换行符.

我的问题：

当我不希望文本直到第一个换行符时,我的RegEx如何看起来像,但文本到第二个换行符？也许用正确的量词？我没有得到它的工作.

我的模式：“.*”“keyword”“.*”

Main.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Text.RegularExpressions;
using Xceed.Words.NET;

public class Class1
{

  static void Main(string[] args)
  {
     String searchParam = @".*" + "thiskeyword" + ".*";
     List<String> docs = new List<String>();
     docs.Add(@"C:\Users\itsmemario\Desktop\project\test.docx");

     for (int i = 0; i < docs.Count; i++)
     {
         Suche s1 = new Suche(docs[i],searchParam);
         s1.SearchEngine(docs[i],searchParam);
     }
  }
}

Suche.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Text.RegularExpressions;
using Xceed.Words.NET;


public class Suche
{
    String path;
    String stringToSearchFor;
    List<String> searchResult = new List<String>();

    public Suche(String path,String stringToSearchFor)
    {
        this.path = path;
        this.stringToSearchFor = stringToSearchFor;
    }

    public void SearchEngine(String path,String stringToSearchFor)
    {
        using (var document = DocX.Load(path))
        {
           searchResult = document.FindUniqueByPattern(stringToSearchFor,RegexOptions.IgnoreCase);

            if (searchResult.Count != 0)
            {
                WriteList(searchResult);
            }
            else
            {
                Console.WriteLine("Text does not contain keyword!");
            }
        }
    }

    public void WriteList(List<String> list)
    {
        for (int i = 0; i < list.Count; i++)
        {
            Console.WriteLine(list[i]);
            Console.WriteLine("\n");
        }
    }
}

预期的产量就像

"*LINEBREAK* Theres nothing nicer than a working filter for keywords. *LINEBREAK*"

解决方法

您不能使用document.FindUniqueByPattern DocX方法来跨行匹配,因为它只搜索单个段落.见 this source code,即foreach(段落中的段落p).

您可以获取document.Text属性,或将所有段落文本合并为一个并在整个文本中搜索.删除searchResult = document.FindUniqueByPattern(stringToSearchFor,RegexOptions.IgnoreCase);线和使用

var docString = string.Join("\n",document.Paragraphs.Select(p => p.text));
// var docString = string.Join("\n",document.Paragraphs.SelectMany(p => p.MagicText.Select(x => x.text)));
searchResult = Regex.Matches(docString,$@".*{Regex.Escape(stringToSearchFor)}.*\n.*",RegexOptions.IgnoreCase)
    .Cast<Match>()
    .Select(x => x.Value)
    .ToList();