C＃String拆分路径以获取每个子路径

Question

我有这个数据集：

• BW \ Website Implementation \ Phase1 \ Backlog

• BW \ Website Implementation \ Phase1 \ Iteration 0

  List<string> IterationPaths = new List<string>();
  foreach (WorkItem item in collection)
  {
    List<string> itpath = item.IterationPath.Split('\\').ToList<string>();
    itpath = itpath.Except(IterationPaths).ToList();
    foreach (string path in itpath)
    {
      IterationPaths.Add(path);
    }
  }
  

但目前这给了我：

• BW
• 网站实施
• 阶段1
• 积压
• 迭代0

我需要它：

• BW
• BW \网站实施
• BW \ Website Implementation \ Phase1
• BW \ Website Implementation \ Phase1 \ Backlog
• BW \ Website Implementation \ Phase1 \ Iteration 0

我必须做些什么调整才能发挥作用？

Answer 1

var itpath = item.IterationPath.Split('\\');

int i = 1;
var result = itpath.Select(x => string.Join("\\", itpath.Take(i++))).ToList();