Hi all,



I want to maintain few variables available for all the classes within the
system. For example the session key and the logged in user'd ID. How can I
do this? I can have a class with all these as properties. But how can I make
a instance of that classes available everywhere?

Thanks.

Nadee

"MeAgin" <(E-Mail Removed)> schrieb
> I want to maintain few variables available for all the classes
> within the system. For example the session key and the logged in
> user'd ID. How can I do this? I can have a class with all these as
> properties. But how can I make a instance of that classes available
> everywhere?


For example by making it available by a Public Shared Readonly Property. I
usually have an Application class for this purpose.


Armin

MeAgin wrote:
> I want to maintain few variables available for all the classes within the
> system. For example the session key and the logged in user'd ID. How can I
> do this? I can have a class with all these as properties. But how can I make
> a instance of that classes available everywhere?
<snip>

Put an instance of your class in a Module:

<aircode>
Module Globals
Private mState As New AppState

Public ReadOnly Property State As AppState
Get
Return mState
End Get
End Property
...
End Module
</aircode>

In the above example, the State property will be available to the
entire application.

HTH.

Regards,

Branco.

"MeAgin" <(E-Mail Removed)> wrote in
news:(E-Mail Removed):

> I want to maintain few variables available for all the classes within
> the system. For example the session key and the logged in user'd ID.
> How can I do this? I can have a class with all these as properties.
> But how can I make a instance of that classes available everywhere?

You can use Shared (Static) variables or the My.Applications.Settings
class.

You can add a module to your project and expose these values either as
variables or as properties.

You can also add a class with shared properties.

Adding a module is basically the same as adding a class since the compiler
will silently create the class with shared methods out of the module for you
upon compilation.

Good luck!

JR

"MeAgin" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> Hi all,
>
>
>
> I want to maintain few variables available for all the classes within the
> system. For example the session key and the logged in user'd ID. How can I
> do this? I can have a class with all these as properties. But how can I
> make
> a instance of that classes available everywhere?
>
> Thanks.
>
> Nadee
>
>
>
>

Branco,

> In the above example, the State property will be available to the
> entire application.

Nice, what can I add, Maybe:

To make your program good maintable you can use this as:
Globals.State

:-)

Cor

"Branco Medeiros" <(E-Mail Removed)> schreef in bericht
news:(E-Mail Removed)...
> MeAgin wrote:
>> I want to maintain few variables available for all the classes within the
>> system. For example the session key and the logged in user'd ID. How can
>> I
>> do this? I can have a class with all these as properties. But how can I
>> make
>> a instance of that classes available everywhere?
> <snip>
>
> Put an instance of your class in a Module:
>
> <aircode>
> Module Globals
> Private mState As New AppState
>
> Public ReadOnly Property State As AppState
> Get
> Return mState
> End Get
> End Property
> ...
> End Module
> </aircode>
>
> In the above example, the State property will be available to the
> entire application.
>
> HTH.
>
> Regards,
>
> Branco.
>