How to check If a Enum contain a number?

Question

I have a Enum like this:

 public enum PromotionTypes
{
    Unspecified = 0, 
    InternalEvent = 1,
    ExternalEvent = 2,
    GeneralMailing = 3,  
    VisitBas         


        

Answer 1

Try this:

IEnumerable values = Enum.GetValues(typeof(PromotionTypes))
                              .OfType()
                              .Select(s => (int)s);
if(values.Contains(yournumber))
{
      //...
}