Reference Caller's Application Variables from DLL

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I want to be able to access some global variables (defined in a
winforms "ApplicationEvents.vb") from a DLL.

I assume I need to pass a reference to the application object to the
DLL. If so, how would I define it in the DLL and how would I set it
in the main app?

Is there some other way to get a reference to the DLL instantiator's
application object from inside the DLL?

Thanks.
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Re: Reference Caller's Application Variables from DLL by Bryan

Bryan
Tue Jun 05 20:49:41 CDT 2007

Declare the global variables as public and shared:

Namespace SomeNamespace
Public Class SomeClassName

Public Shared SomeVariableField As Integer = 3

End Class
End Namespace


Then, inside the DLL access the variables like this:

Dim i As Integer = SomeNamespace.SomeClassName.SomeVariableField

--
Bryan Phillips
MCT, MCSD, MCDBA, MCSE
Blog: http://bphillips76.spaces.live.com
Web Site: http://www.composablesystems.net



"pauld@maronsoftware.com" <pauld@maronsoftware.com> wrote in message
news:1181082819.305160.176760@o5g2000hsb.googlegroups.com:

> I want to be able to access some global variables (defined in a
> winforms "ApplicationEvents.vb") from a DLL.
>
> I assume I need to pass a reference to the application object to the
> DLL. If so, how would I define it in the DLL and how would I set it
> in the main app?
>
> Is there some other way to get a reference to the DLL instantiator's
> application object from inside the DLL?
>
> Thanks.

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Re: Reference Caller's Application Variables from DLL by pauld

pauld
Thu Jun 07 12:26:25 CDT 2007

Bryan,

Thanks for the response, but I know I'm missing something because I
don't understand how this will work.

I have a winforms project and I declare a class in the project like
this:
Namespace nsGlobal
Public Class clsGlobal
Public Shared PubSharedString As String = "PubSharedString"
End Class
End Namespace

In the winforms project I have a reference to a separate DLL project.

Obviously the winforms app can instantiate a class from DLL to get a
reference to the class in the DLL, but I don't see how a class
*within* the DLL has any kind of a reference to the class from the
winforms app that instantiated the DLL.

Referencing "nsGlobal" from the DLL project tells me that "nsGlobal is
not declared".

I also tried putting the "nsGlobal" namespace in
"Application.vb" (along with the "My" namespace) and that fared no
better.

What fundamental understanding am I missing here?


Thanks.



On Jun 5, 6:49 pm, "Bryan Phillips"
<bphill...@nospam.spamcop.net.spammenot> wrote:
> Declare the global variables as public and shared:
>
> Namespace SomeNamespace
> Public Class SomeClassName
>
> Public Shared SomeVariableField As Integer = 3
>
> End Class
> End Namespace
>
> Then, inside the DLL access the variables like this:
>
> Dim i As Integer = SomeNamespace.SomeClassName.SomeVariableField
>
> --
> Bryan Phillips
> MCT, MCSD, MCDBA, MCSE
> Blog: http://bphillips76.spaces.live.com
> Web Site: http://www.composablesystems.net
>
> "p...@maronsoftware.com" <p...@maronsoftware.com> wrote in message
>
> news:1181082819.305160.176760@o5g2000hsb.googlegroups.com:
>
>
>
> > I want to be able to access some global variables (defined in a
> > winforms "ApplicationEvents.vb") from a DLL.
>
> > I assume I need to pass a reference to the application object to the
> > DLL. If so, how would I define it in the DLL and how would I set it
> > in the main app?
>
> > Is there some other way to get a reference to the DLL instantiator's
> > application object from inside the DLL?
>
> > Thanks.- Hide quoted text -
>
> - Show quoted text -


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