Search code examples
c#enumsenum-flags

How to cast int value to list int value of Flag enums

I have this flag enum:

public enum DataAccessPoliceis
{
      None = 0,
      A = 1,
      B = 2,
      C = 4, 
      D = 8, 
      E = B | C | D, // 14
      All = A | E // 15
}

I want to get int value (or list of int values for complex enum item) from int value:

int x = 9; // enum items => D | A
List<int> lstEnumValues = ???
// after this line ...
// lstEnumValues = { 1, 8 }
// and for x = 15
// lstEnumValues = { 1, 2, 4, 8, 14, 15 }

What's your solution for this question?

Solution

  • Answer of my question:

    var lstEnumValues = new List<int>Enum.GetValues(typeof(DataAccessPoliceis)).Cast<int>())
.Where(enumValue => enumValue != 0 && (enumValue & x) == enumValue).ToList();

    @dyatchenko and @Enigmativity thank you for your responses.