C#字符串处理之分割字符串并保留分隔符的几种方法

目录

• [方法一]

  string[] parts = Regex.Split(originalString, @"(?<=[.,;])")

• [方法二]

  public static IEnumerable SplitAndKeep(this string s, char[] delims)
  {
  int start = 0, index;

  while ((index = s.IndexOfAny(delims, start)) != -1)
  {
  if(index-start > 0)
  yield return s.Substring(start, index - start);
  yield return s.Substring(index, 1);
  start = index + 1;
  }

  if (start < s.Length)
  {
  yield return s.Substring(start);
  }
  }

• [方法三]

  public static IEnumerable SplitAndKeep(string s, params string[] delims)
  {
  var rows = new List() { s };
  foreach (string delim in delims)//delimiter counter
  {
  for (int i = 0; i < rows.Count; i++)//row counter
  {
  int index = rows[i].IndexOf(delim);
  if (index > -1
  && rows[i].Length > index + 1)
  {
  string leftPart = rows[i].Substring(0, index + delim.Length);
  string rightPart = rows[i].Substring(index + delim.Length);
  rows[i] = leftPart;
  rows.Insert(i + 1, rightPart);
  }
  }
  }
  return rows;
  }

具体可参考：https://stackoverflow.com/questions/521146/c-sharp-split-string-but-keep-split-chars-separators