Alternate enum value

[kalvin.tuel@gmail.com]

I have an enum marked with the flags attribute. I would like to
assign an alternate value to each enum member so that instead of being
stuck with the value needed for the flag I could give each member it's
position in the enum. This is just an example, what I really need is
to assign each value an ID from a database. Is there a builtin
attribute for this or do I need to create a custom attribute to handle
something like this?

What I would like:
[SYS.Flags]
private enum enumTest
{
[RealValue(1)]
First = 1,
[RealValue(2)]
Second = 2,
[RealValue(3)]
Third = 4
};

Thank you.

[Mattias Sjögren]

Re: Alternate enum value

>Is there a builtin
>attribute for this or do I need to create a custom attribute to handle
>something like this?

No built-in attribute that I know of.

>[SYS.Flags]
>private enum enumTest
>{
[RealValue(1)]
First = 1,
[RealValue(2)]
Second = 2,
[RealValue(3)]
Third = 4
>};

If all values follow the same pattern, you can calculate the "real
value" as

realValue = Math.Log((int)y ourEnumTestValu e, 2) + 1;


Mattias

--
Mattias Sjögren [C# MVP] mattias @ mvps.org
http://www.msjogren.net/dotnet/ | http://www.dotnetinterop.com
Please reply only to the newsgroup.

[kalvin.tuel@gmail.com]

Re: Alternate enum value

On Nov 15, 1:20 pm, Mattias Sjögren <mattias.dont.w ant.s...@mvps.o rg>
wrote:

Is there a builtin
attribute for this or do I need to create a custom attribute to handle
something like this?

>
No built-in attribute that I know of.
>

[SYS.Flags]
private enum enumTest
{
[RealValue(1)]
First = 1,
[RealValue(2)]
Second = 2,
[RealValue(3)]
Third = 4
};

>
If all values follow the same pattern, you can calculate the "real
value" as
>
realValue = Math.Log((int)y ourEnumTestValu e, 2) + 1;
>
Mattias
>
--
Mattias Sjögren [C# MVP] mattias @ mvps.orghttp://www.msjogren.ne t/dotnet/|http://www.dotnetinterop.com
Please reply only to the newsgroup.

Thanks a lot. I'll give that a try.

[Ben Voigt [C++ MVP]]

Re: Alternate enum value


"Mattias Sjögren" <mattias.dont.w ant.spam@mvps.o rgwrote in message
news:Om5VZx7JIH A.2268@TK2MSFTN GP02.phx.gbl...

>

>>Is there a builtin
>>attribute for this or do I need to create a custom attribute to handle
>>something like this?

>
No built-in attribute that I know of.
>
>

>>[SYS.Flags]
>>private enum enumTest
>>{
> [RealValue(1)]
> First = 1,
> [RealValue(2)]
> Second = 2,
> [RealValue(3)]
> Third = 4
>>};

>
If all values follow the same pattern, you can calculate the "real
value" as
>
realValue = Math.Log((int)y ourEnumTestValu e, 2) + 1;

A lookup table should be much faster and not use that much memory, plus
there needn't be any pattern.

>
>
Mattias
>
--
Mattias Sjögren [C# MVP] mattias @ mvps.org
http://www.msjogren.net/dotnet/ | http://www.dotnetinterop.com
Please reply only to the newsgroup.