How to show correct name on an Enum bitwise?

Question

I have this one marked as [Flag], ie, are values in bit

[Flags]
public enum Position
{
    None,
    Left,
    Right,
    Both=3
}

Setei to Both(both) position in 3 why if it is Left and Right at the same time, it must be equal to Both (1+2=3) But when I call Both at the Tostring and it shows up as "Left | Right". How do I make him appear as "Both"?

Answer 1

Remove the attribute Flags... because that’s exactly what the Flags attribute is for, to indicate that there is a combination of values... if you want to show a value without considering it as a combination, then why use Flags?

Note that an Enum does not need the attribute Flags to be used as such. Also, I would specify all values manually to avoid future errors:

public enum Position
{
    None - 0,
    Left = 1,
    Right = 2,
    Both = 3
}

Still you can do it:

Position pos = Position.Left | Position.Right;

And when it comes to bitwise testing, you can use bitwise operator &, so as to isolate the desired bit, thus:

if ((pos & Position.Left) != 0)
{
    // código para quando o bit Position.Left está definido
}

Or else the other way around:

if ((pos & Position.Left) == 0)
{
    // código para quando o bit Position.Left está zerado
}