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Passing multiple enum values as one parameter

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edek

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Passing multiple enum values as one parameter

Nov 17th, 2007

:The problem:

enum:

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 C# Syntax (Toggle Plain Text) 
enum Choice
        {
            A,
            B,
            C
        }
enum Choice
        {
            A,
            B,
            C
        }

I would like to pass it to function like that:

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 C# Syntax (Toggle Plain Text) 
void function(Choice.A | Choice.B)
{
     //how do I determine what was passed here??
     //how to handle two or more values??
}
void function(Choice.A | Choice.B)
{
     //how do I determine what was passed here??
     //how to handle two or more values??
}

Thanks in adv

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InfiNate

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Re: Passing multiple enum values as one parameter

Nov 17th, 2007

Look up how to use a switch statement.

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Askold

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Re: Passing multiple enum values as one parameter

Nov 18th, 2007

•

Originally Posted by InfiNate

Look up how to use a switch statement.

First of all your enum must have values which equal to x^2 (1, 2, 4, 8, 16, 32, etc.).

enum Choice
{
A = 1,
B = 2,
C = 4
}

Having the such enumeration your method can look as the following does:

void function(Choice choice)
{
if ((choice & Choice.A) != 0)
{
// It's A.
}

if ((choice & Choice.B) != 0)
{
// It's B.
}
}

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edek

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Re: Passing multiple enum values as one parameter

Nov 18th, 2007

Thanks for help!!!

Last edited by edek; Nov 18th, 2007 at 11:49 am.

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4M-world

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Re: Passing multiple enum values as one parameter

Nov 19th, 2007

most easy way to do such thing use binary idea as Askold told you in his post: where
1: 0001
2: 0010
3: 0011
and so on...
then do your comparison to know each value of enumerator you want but be careful in such number like 4: 0011 when you and with it can retrieve bot A, and B in such case use number in such way so you can distinct between
A: 0000 0001 = 1
B: 0000 0010 = 2
C: 0000 0100 = 4

Who never risks he never drink Champagne

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edek

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Re: Passing multiple enum values as one parameter

Nov 19th, 2007

Thanks!

I have already found another page where it is explained, but THANKS!

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alc6379

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Re: Passing multiple enum values as one parameter

Dec 6th, 2007

Why not use a switch statement? Make a variable that can contain the value of your Enum, pass that as a parameter of the method, and then use a switch statement to evaluate the value of that variable in the method... Why would that not work?

Alex Cavnar, aka alc6379