Program.cs

var minionsNames = (Minions.Bob | Minions.Dave).ToString();
// Displays 'Bob, Dave'
Console.WriteLine(minionsNames);

var allowedMinionsToParticipate = Minions.Dave | Minions.Kevin | Minions.Stuart;
// To retrieve the distinct values in you property one can do this
Console.WriteLine(allowedMinionsToParticipate);
if ((allowedMinionsToParticipate & Minions.Dave) == Minions.Dave)
{
    Console.WriteLine("Dave is allowed to be a party animal!");
}

// In .NET 4 and later
if (allowedMinionsToParticipate.HasFlag(Minions.Bob))
{
    Console.WriteLine("Bob is allowed to be a party animal!");
}
else
{
    Console.WriteLine("No more tequila for Bob. :(");
}