C#将字符串列表保存到文件中,在每个条目之间用空行保存

在.NETCore3.1中编写控制台应用程序。在下面,我将从一个匹配集合中获取所有正则表达式匹配,并将它们写入一个文本文件,每个文本文件都有自己的行。请注意 modifiedFiles <FileInfo> .

using System.IO;
using System.Configuration;
using System.Text;
using System.Text.RegularExpressions;
using System;
using System.Linq;
using System.Collections.Generic;

namespace LogFiles
{
    class Program
    {
        static void Main(string[] args)
        {

            string sourcePath = ConfigurationManager.AppSettings["sourcepath"];
            string targetPath = ConfigurationManager.AppSettings["destpath"];
            Regex rx1 = new Regex(@"(Entry\t.*)",
            RegexOptions.Compiled | RegexOptions.IgnoreCase);


            var modifiedFiles = ModifiedFileFinder.GetFilesModifiedInLast24Hours(sourcePath);

                foreach (var file in modifiedFiles)
                {
                var fileContent = File.ReadAllText(file.ToString());
                var fileName = file.Name;
                var newFile = String.Concat(targetPath, fileName);
                MatchCollection matches = rx1.Matches(fileContent);

                if (matches.Count > 0)
                    {
                    var result = new List<string>();

                    foreach (Match m in matches)
                    {
                        result.Add(m.Value);
                    }
                    File.WriteAllLines(newFile, result);
                    }
                }  
           }              
       }
   }

结果文件中的文本如下所示:

Entry  this is item 1.
 
Entry  this is item 2.
 
Entry  this is item 3.

Entry  this is item 1.
Entry  this is item 2.
Entry  this is item 3.