Question

I Have a Enum

public enum ProcessStatus: byte
{
    NotStarted = 0,
    PreCheckStarted= 1,
    PreCheckCompleted= 2,
    Processing= 3,
    Failed= 4,
    Completed= 5,
    Closed= 6
}

in Table we have entries like 0,3,5,6

we need list of Enums based on some criteria and criteria is List which contains 0,1,2

i am able to get all Enums as List Like

 Enum.GetValues(typeof(ProcessStatus)).OfType<ProcessStatus>()

and have

List<byte> processListIDs 

which contains IDs

i want

 IEnumerable<ProcessStatus> filtered based on ids in processListIDs using LINQ.

Thanks in Advance

Answer 1

You can use Intersect with better performance:

  var enumList = Enum.GetValues(typeof (ProcessStatus))
                     .OfType<ProcessStatus>().Cast<byte>();

  var result = enumList.Intersect(processListIDs)
                       .Cast<ProcessStatus>();