How to perform LINQ query over Enum?

Question

Below is my Enumerator List:

public enum StatusEnum
{
    Open = 1,
    Rejected = 2,
    Accepted = 3,
    Started = 4,
    Completed = 5,
    Canc         


        

Answer 1

return Enum.GetValues(typeof(Activity.StatusEnum)).Cast().Where((n, x) => x < 4);

If you want to be able to change the list of items, just add them into a List and use Contains:

var listValid = new List() { Activity.StatusEnum.Open, Activity.StatusEnum.Rejected, Activity.StatusEnum.Accepted, Activity.StatusEnum.Started };
return Enum.GetValues(typeof(Activity.StatusEnum)).Cast().Where(n => listValid.Contains(n));