Question

I know how to loop through enum list of properties, but how would I loop through all “selected” enum properties? For example, if one did Prop1 | Prop2 against public enum Foo { Prop1; Prop2; Prop3 }, how would I achieve this?

This is what I have now:

var values = Enum.GetValues(typeof(FileStatus)).Cast<FileStatus>();
foreach (var value in values)
{
}

It loops through all enum properties, but I’d like to loop only the ones that were “selected”.

Update: [Flags] attribute was set.

Update 2: The enum contains a large number of properties, I can’t and won’t type/hardcode a single property check, instead I want to dynamically loop through each of them and check if my enum instance Bar contains the looped item set.

Answer 1

How about the following:

FileStatus status = FileStatus.New|FileStatus.Amazing;

foreach (FileStatus x in Enum.GetValues(typeof(FileStatus)))
{
    if (status.HasFlag(x)) Console.WriteLine("{0} set", x);
}

Or in one fell LINQ swoop:

var flags = Enum.GetValues(typeof(FileStatus))
                .Cast<FileStatus>()
                .Where(s => status.HasFlag(s));