Bruce,
How would option 2 work? Would you please give an example showing how to do
this or do you know of an example online soimewhere?
Thanks,
--
Joe
VB.NET/C#/ASP.NET/ASP/VB/C++/Web and DB development/VBA Automation
"Bruce Barker" wrote:
> for a project to use classes defined in another project, it needs a
> reference. if you want business to reference messaging, and messaging to use
> clsses defined in business, yo have two options:
>
> 1) merge them into 1 project.
> 2) create a third project (ref'd by both business and message) that defines
> the shared classes. the best approach whould be to define abstact classes
> here, and allow the business layer to implement it.
>
> -- bruce (sqlwork.com)
>
>
> "Joe" <> wrote in message
> news:94873A67-719A-4049-90D6-...
> > Sreejith,
> >
> > Thanks for your reply. The idea was to remove the Busienss reference from
> > Messaging and have in its place a Messaging reference in Business.
> >
> > Joe
> > --
> > Joe
> >
> > VB.NET/C#/ASP.NET/ASP/VB/C++/Web and DB development/VBA Automation
> >
> >
> > "Sreejith Ram" wrote:
> >
> >> > If I delete the Messaging project's reference to the Business project
> >> > and
> >> > create a reference to the Messaging project in the Business project,
> >> > the
> >> > Messaging classes' method calls can not use the Policy, Unit or Vehicle
> >> > classes. An example of the message that is displayed is "Type
> >> > Business.Policy is not defined."
> >>
> >> I believe, you have already identified that a circular
> >> reference between projects is not allowed. Meaning ,if bussiness
> >> references
> >> messaging, messaging cannot have a refernce back to bussiness.
> >>
> >> > I want to be able to pass Busienss classes to
> >> > Messaging classes so that the Messaging classes can retrieve data from
> >> > the
> >> > third-party and pass that data back to the Business classes (i.e. act
> >> > as a
> >> > database layer). Does anyone have an idea how I could do this?
> >>
> >> while waiting to hear from experts, One simple method to handle
> >> this
> >> is to define your data structure (c# struct) (the data you pass between
> >> message & bussiness) in a seperate proj so both message & bussiness can
> >> reference and pass it between calls.. Doesnt hurt if used in small
> >> projects.
> >> I am sure there will be another systematic, efficient design approch...
> >>
> >>
> >> "Joe" wrote:
> >>
> >> > Hello All:
> >> >
> >> > I need some help understanding project references. I have two projects
> >> > that
> >> > are giving me grief. They are called Business and Messaging.
> >> >
> >> > The Business proejct contains classes that handle the business layer.
> >> > These
> >> > handle database calls that return data from the system's databases. It
> >> > contains classes like Policy, Unit and Vehicle. Currently, the
> >> > Business
> >> > project has no reference to the Messaging project.
> >> >
> >> > The Messaging project handles calls to a third-party system and uses
> >> > Business' classes (Unit, Policy and Vehicle). For example, The
> >> > Messaging
> >> > class will use a Business.Vehicle class which holds information about a
> >> > Vehicle to request information from the third-party system about that
> >> > vehicle. Currently, the Messaging project has a reference to the
> >> > Business
> >> > project.
> >> >
> >> > If I delete the Messaging project's reference to the Business project
> >> > and
> >> > create a reference to the Messaging project in the Business project,
> >> > the
> >> > Messaging classes' method calls can not use the Policy, Unit or Vehicle
> >> > classes. An example of the message that is displayed is "Type
> >> > Business.Policy is not defined."
> >> >
> >> > Why?
> >> >
> >> > Finally, I need to architect this such that the Business project
> >> > references
> >> > the Messaging project. I want to be able to pass Busienss classes to
> >> > Messaging classes so that the Messaging classes can retrieve data from
> >> > the
> >> > third-party and pass that data back to the Business classes (i.e. act
> >> > as a
> >> > database layer). Does anyone have an idea how I could do this?
> >> >
> >> > I hope that I have been somewhat clear.
> >> >
> >> > TIA,
> >> > --
> >> > Joe
> >> >
> >> > VB.NET/C#/ASP.NET/ASP/VB/C++/Web and DB development/VBA Automation
>
>
>
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