使用Regex拆分字符串。

using System;
    using System.Text.RegularExpressions;
    
    public class Program
    {
        public static void Main()
        {
            string input = "holidays/*/2024";
            string pattern = @"(?<=\*)|\*(?=/)";
    
            string[] substrings = Regex.Split(input, pattern);
            foreach (string substring in substrings)
            {
                Console.WriteLine(substring);
            }
        }
    }

    Output

    holidays/
    /2024

我希望这对你有帮助！

我不懂C#，但一个简单的循环就足够了：

string[] splitted = text.Split(delimiter);

for (var i = 0; i < splitted.Length; i++) {
    var fragment = splitted[i];

    if (i > 0) {
        fragment = delimiter + fragment;
    }

    if (i < splitted.Length - 1) {
        fragment += delimiter;
    }

    Console.WriteLine(fragment);
}

试试on dotnetfiddle.net。

另一个解决方案是使用这个看起来很可怕的正则表达式：

Regex re = new Regex(
  @"
    (?:^|\*)        # Match and capture either the beginning of string or '*',
    (?=             # then
      ([^*]+)       # a group 1+ non-'*' characters, followed by
      (\*|$)        # another group of '*' or the end of string.
    )
  ",
  RegexOptions.IgnorePatternWhitespace
);

...然后.Join()每个匹配中的组以获得最终结果：

MatchCollection matches = re.Matches(text);

foreach (Match match in matches) {
  Console.WriteLine(
    String.Join("", (
      from Group matchGroup in match.Groups
      where matchGroup.ToString() != ""
      select matchGroup.ToString()
    ))
  );
}

试试on dotnetfiddle.net。