how to reference object as integer

[samlee]

// create an object
Control obj=new Control();
// How to write c# code to achieve the following pseudo code?
// use an integer to represent an obj
int temp=(int)obj;
// later recover original object
Control obj1=(Control)t emp;

TIA

[Günter Prossliner]

Re: how to reference object as integer

NEVER DO SOMETHING LIKE THIS!

The CLR can move the objects for memory - optimation, and if you persit a
pointer it need additional coding (e.g fixed - statement). This shall only
be done in the case of InterOp!

If you want just to be able to get an integer to repesent your object, you
could do the following:

class ControlIntConve rter
{
ArrayList list = new ArrayList();

public int RegisterControl (Control ctl)
{
return list.Add(ctl);
}

public Control GetRegistredCon trol(int handle)
{
return list[handle] as Control;
}
}

BUT: The integers are only valid as long the app is running! And if so, you
could also save the Reference itself, maybe re-think your design!

GP

"Rob Tillie" <Rob.Tillie@stu dent.tul.edu> wrote in message
news:eAe76OkXDH A.2632@TK2MSFTN GP09.phx.gbl...[color=blue]
> Why the hell would you want to do that? :|
> If it works, it should work how you did it.
> I think you want the pointer to the object, so maybe something like:
> int temp = (int) &obj;
>
> But I think a memory location is larger than an int, so the conversion[/color]
will[color=blue]
> not go properly.
>
> Greetz,
> -- Rob.
>
> samlee wrote:[color=green]
> > // create an object
> > Control obj=new Control();
> > // How to write c# code to achieve the following pseudo code?
> > // use an integer to represent an obj
> > int temp=(int)obj;
> > // later recover original object
> > Control obj1=(Control)t emp;
> >
> > TIA[/color]
>
>[/color]

[Maciej Kromrych]

Re: how to reference object as integer

"Rob Tillie" <Rob.Tillie@stu dent.tul.edu> wrote in message
news:eAe76OkXDH A.2632@TK2MSFTN GP09.phx.gbl...[color=blue]
> Why the hell would you want to do that? :|
> If it works, it should work how you did it.
> I think you want the pointer to the object, so maybe something like:
> int temp = (int) &obj;[/color]

I think this way you never get a pointer to an object.
You only get a pointer to an int, which actually is not
there!

Instead, you may try to use a GCHandle structure,
which you can convert to an IntPtr and further
to an int.

HTH,
Maciej