c＃LINQ加入逗号分隔的字符串

Question

I have a string of comma separated values called driverids.

1. Should I use the comma separated list or the array that this comma separated list comes from to use this in a join.

2. How would I use a join in linq to these driverids?

_currentDriverData.AddRange(elementsCurrent.Join(driverids)

// gets distinct driver ids from the driver duty status change logs;
string driverids = string.Join(",", _logsDutyStatusChange
                         .Select(item => item.did)
                         .Distinct()
                         .ToArray());

//gets all current driver information
//_currentDriverData.AddRange(elementsCurrent.Where(drivers)

_currentDriverData.AddRange(elementsCurrent.Join(driverids).Select.........

Answer 1

你会做这样的事情（假设_currentDriverData是一个id列表）：

_currentDriverData.AddRange(commaSeparatedString.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyElements).ToList());