get comma separated list of enumeration's integers

Question

This:

string csvEnums = string.Join(",", Enum.GetNames(typeof(Bla)));

returns:

X1,Y1

given this enumeration:

public enum Bla
{
    [Description("X")]
    X1 = 1,
    [Description("Y")]
    Y1 = 2
}

Is there a similar efficient way to obtain the comma separated list:

1,2

Answer 1

Try casting GetValues() return array to ints:

string csvEnums = string.Join(",", Enum.GetValues(typeof(Bla)).Cast<int>());

The problem with GetValues() method is that returns an object of type Array, and there are no Join() overload that can process it correctly.

Answer 2

Try this:

string csvEnums = string.Join(",", Enum.GetValues(typeof(Bla)).Cast<Bla>().Select(x=>(int)x));