How do I determine if an Enum value has one or more of the values it's being compared with?

Question

I\'ve got an Enum marked with the [Flags] attribute as follows:

[Flags]
public enum Tag : int
{
    None = 0,
    PrimaryNav = 1,
    HideChildPages = 2,
            


        

Answer 1

You can use this extension method on enum, for any type of enums:

public static bool IsSingle(this Enum value)
    {
        var items = Enum.GetValues(value.GetType());
        var counter = 0;
        foreach (var item in items)
        {
            if (value.HasFlag((Enum)item))
            {
                counter++;
            }
            if (counter > 1)
            {
                return false;
            }
        }
        return true;
    }