小编Pat*_*tee的帖子

我从外部来源收到以下列表（更像是一个连接表）：

请注意，在某些情况下，一个人会向多个人报告。在这个样本 C001 中。

List<DirectReport> list = new List<DirectReport>()
{
    new DirectReport(){ EmployeeId = "B001", ReportsTo = "A001" },
    new DirectReport(){ EmployeeId = "B002", ReportsTo = "A001" },
    new DirectReport(){ EmployeeId = "B003", ReportsTo = "A002" },
    new DirectReport(){ EmployeeId = "B004", ReportsTo = "A003" },
    new DirectReport(){ EmployeeId = "C001", ReportsTo = "B001" },
    new DirectReport(){ EmployeeId = "C001", ReportsTo = "B003" },
    new DirectReport(){ EmployeeId = "C002", ReportsTo = "B002" },
    ...
};

为了让 C001 的所有直接上级，我想出了以下内容：

IEnumerable<string> listC001sSuperiors …