Getting values back from enum sum

Question

I have the following enum:

[Flags]
public enum MyColor 
{
    None    = 0,
    Red = 1,
    Green = 2,
    Blue = 4,
    Orange = 8
}

I am storing the sum of allowed options in a variable say:

var sum = MyColor.Red | MyColor.Green | MyColor.Blue;

I want to extract the options back from this sum.

i.e I want to know which values are contained in this sum.I want the collection of options Red, Green and Blue from this variable back.

Can you help me doing that?

David Pilkington · Accepted Answer · 2016-01-06 06:13:00Z

3

You can try doing this

foreach (MyColor value in Enum.GetValues(sum.GetType()))
    if (sum.HasFlag(value))
        //Here it is, do something with it

answered Jan 6, 2016 at 6:13

David Pilkington

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Community · Accepted Answer · 2017-05-23 11:51:59Z

2

Improving on David Pilkington's answer;

var colorCollection = new List<MyColor>();
var colorValues = Enum.GetValues(typeof(MyColor));

foreach (var color in colorValues)
   if(sum.HasFlag(color))
      colorCollection.Add(color);

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