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在 C# 应用程序中，我使用以下内容在换行符处拆分字符串。

using System;
using System.Collections.Generic;
using System.IO;

public static class StringUtil
{
  public static IEnumerable<string> splitByLines( this string src )
  {
    if ( src == null )
    {
      yield break;
    }

    using ( StringReader reader = new StringReader( src ) )
    {
      string line;
      while ( ( line = reader.ReadLine() ) != null )
      {
        yield return line;
      }
    }
  }
}

但是，我想保留空行。例如，当我拆分以下源字符串时：

"Now is the time for all good men\r\nto come to the aid\r\nof their country.\r\n\r\nTo err is human,\r\nto really foul things up requires a computer.\r\n\r\nAble was I ere I saw Elba."

StringReader.ReadLine()跳过双换行符，结果只有 6 个子字符串。

/* Undesirable result.  Empty lines are absent. */
"Now is the time for all good men"
"to come to the aid"
"of their country."
"To err is human,"
"to really foul things up requires a computer."
"Able was I ere I saw Elba."

我希望结果是 8 个子字符串，包括空行。

/* Desirable result.  Empty lines are kept. */
"Now is the time for all good men"
"to come to the aid"
"of their country."
""
"To err is human,"
"to really foul things up requires a computer."
""
"Able was I ere I saw Elba."
4

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