Why do some people use "None" as enumeration member ?

Posted by alex on Stack Overflow See other posts from Stack Overflow or by alex
Published on 2010-04-16T06:22:01Z Indexed on 2010/04/16 6:33 UTC
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c#

I noticed that some enumerations have "None" as a enumeration member.

For example what I mean

enum Mode
{
    Mode1 = 1,
    Mode2 = 2,
    Mode3 = 3,
    None = 4
}

Why do they use it ? In what cases solution with a none member is more preferable (less preferable) ?

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Developer IT

Why do some people use "None" as enumeration member ? - Developer IT

Why do some people use "None" as enumeration member ?

c#

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