Question

Is it possible to combine multiple enums together? Below is code sample of what I would like to see:

enum PrimaryColors
{
   Red,
   Yellow,
   Blue
}

enum SecondaryColors
{
   Orange,
   Green,
   Purple
}

//Combine them into a new enum somehow to result in:
enum AllColors
{
   Red,
   Orange,
   Yellow,
   Green,
   Blue,
   Purple
}

It does not matter what order they are, or what their backing numbers are, I just want to be able to combine them.

For context, this is so that multiple classes for a program I am working on would have enums associated with what they do. My main program would read all of the enums available from each of the support classes and make a master list of available enums of available commands (the the enums are for).

Edit:
The reason for these enums is because my main program is reading in a list of commands to perform at certain times, and so I want to read in the file, see if the command in it is associated with one of my enums, and if it is, put it into a list of commands to perform.

Answer 1

Not sure I understand precisely. But you can make a List<> of all the values like this:

var allColors = new List<Enum>();

allColors.AddRange(Enum.GetValues(typeof(PrimaryColors)).Cast<Enum>());
allColors.AddRange(Enum.GetValues(typeof(SecondaryColors)).Cast<Enum>());

Instead of List<Enum> you could also use HashSet<Enum>. In any case, because you assign a PrimaryColor or SecondaryColor to a class type (namely System.Enum), you get boxing, but that’s just a technical detail (probably).