make necessitate a class for implement an enum

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Hello everybody,

I need to make necessitate a class for implement an enum type, what should I do?
I also tried an abstract class and interfac, but its has error

C#

    public abstract class AbstractUserControl
    {
// Error: The modifier 'abstract' is not valid for this item

        public abstract enum MyEnum
        {
            
        }
        public abstract UserControl GetUserControl();
        public abstract void Disposing();
    }

    interface IUserControlFactory
    {
//Error: 'MyEnum': interfaces cannot declare types
        enum MyEnum
        {
            
        }
    }

Any hlp pls...

Thank you in advance.

Posted 26-Nov-11 3:21am

hzawary

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RaisKazi · Answer 1 · 2011-11-26T04:13:00

Solution 2

Have a look at similar Question-Answer discussions below.

C# enum in interface/base class?

How can I make an abstract enum in a .NET class library?

Posted 26-Nov-11 4:13am

RaisKazi

v2

Comments

hzawary 26-Nov-11 11:13am

Very good, but its dirty answer:)

RaisKazi 26-Nov-11 11:21am

Its not dirty, its reality. :)

OriginalGriff · Answer 2 · 2011-11-26T04:08:00

Solution 1

An interface can only contain the signatures of methods, delegates, events or indexers. You cannot declare an enum or any other type in an interface - you have to make the declaration outside the interface. That is the language definition I'm afraid!

MDSN interface[^]

Posted 26-Nov-11 4:08am

OriginalGriff

Comments

hzawary 26-Nov-11 10:51am

Yes I know, but actually I want tell to derived class that its should use an enum type in itself!

OriginalGriff 26-Nov-11 11:01am

Sorry - you can't! :laugh:

hzawary 26-Nov-11 11:04am

So, Is there any way to do this?

OriginalGriff 26-Nov-11 11:22am

Not really, in the way you would want to - RaisKazi does give a link to a sort-of route, but it's a pretty nasty solution to a silly problem. I would be tempted to give one of the mandatory interface methods an enum parameter so they must at least look at them and leave it at that.

Nikil S · Answer 3 · 2011-11-26T04:15:00

Solution 3

You should put your enum outside the interface.

C#

interface IUserControlFactory
{
        
}
enum MyEnum
{

}

Refer link below,
http://social.msdn.microsoft.com/forums/en-US/csharpgeneral/thread/14beb8d1-63d9-42f7-b036-eb9ebb106d08[^]

Posted 26-Nov-11 4:15am

Nikil S

Comments

hzawary 26-Nov-11 10:50am

Yes I know, but actually I want tell to derived class that its should use an enum type in itself!

Nikil S 26-Nov-11 11:59am

I am afraid, you can't do that.

hzawary · Answer 4 · 2011-11-26T08:34:00

Ok! So I've implemented this code in the my class for solve the my problem

C#

public class AssisTouchScreen : AbstractUserControl
{
    enum userControlNames : byte
    {
        ClassicUC,
        TouchScreenUC,
    }

    UserControl _UserControl;
    string[] userControlStrings;

    public AssisTouchScreen()
    {
        userControlStrings = new string[]
            {
                userControlNames.ClassicUC.ToString(),
                userControlNames.TouchScreenUC.ToString()
            };
    }

    public override UserControl GetUserControl(string userControlName)
    {
        Disposing();
        switch (userControlName)
        {
            case "ClassicUC":
                _UserControl = new ClassicUC();
                break;
            case "TouchScreenUC":
                _UserControl = new TouchScreenUC();
                break;
            default:
                _UserControl = new TouchScreenUC();
                break;
        }

        return _UserControl;
    }

    public override string[] GetUserControlNames
    {
        get { return userControlStrings; }
    }

    protected override void Disposing()
    {
        _UserControl = null;
    }
}