How to use Enum with additional options (All, None)

Question

I have an enum, which:

• is included in my class as a property
• it represents some values from a database table (a couple of types)
• it is displa

Answer 1

IMHO, it's best to add an 'All' value to your enum like so:

enum SampleEnum 
{
    Value1 = 1,
    Value2 = 2,
    Value3 = 4,
    All = Value1 | Value2 | Value3 
}

This way, you won't have to care about the displayed items in your combobox, and you can react to the selection of that value in your code, if that should be necessary...