🚀 go-pugleaf

Hi Hamed,

> I hope one of you guys help me to make a decision, especially Bob Swart :

(voice of Mr. Lurch) You rang, sir? ;-)

> I would like to use .Net, VCL forms (not WinForms). Which technology do you
> think is the best (DataSnap, or other things)?

With DataSnap, you can only build Win32 servers. That's a bit of a
bummer... You could check out RemObjects SDK to build multi-tier Delphi
applications using Win32 and .NET (mixing them as you want).

> Can I use acombination of them? For example can I use BDP .NET in server
> application but not in Client? 

If you use BDP or ADO.NET in the server, then you are probably exporting
a .NET DataSet, which is something any client can receive, but which is
hard to understand if you're not a .NET client. You can of course build
a .NET VCL client, but it won't be able to bind the .NET DataSet to the
VCL DB aware controls, unless you use the hardly documented
TADONETConnector, see http://www.drbob42.com/examines/examin62.htm

(but perhaps I should also cover how to work with .NET DataSets in
regular VCL controls - or try to build my own data-aware VCL components
to connect to .NET DataSets. Hmm...)

> I found some good articles in DrBob.com. The best one I liked was using
> TADONETConnector which is a bridge from ADO .NET to VCL forms. I don't know
> how to use the same approach, but using server application in another
> machine. And would that be a good idea for my app? The example in Dr Bob's
> examines comes with Web Service. When I tried to do the same with
> TListConnector and BDP.NET, it was not the same.

For the server you should also be able to use the DataSync/DataHub and
RemoteServer with RemoteConnection components. Or just .NET Remoting
itself (see the other "Dr.Bob Examines" articles for some examples -
although none are using the TADONETConnector again).
 
> And finally, if Mr. Bob Swart is reading this message:
> Bob, I appreciate your help. If you could direct me to the right way, I want
> to buy one of your course books from your site that is related to that way.

I hadn't read this far when I started to answer your message - but I
believe the "ADO.NET" and "XML, SOAP & Web Services" titles cover parts
of what you're looking for ;-)

> Thanks a lot
> 
> Hamed

Groetjes,
          Bob Swart (aka Dr.Bob - www.DrBob42.com)

-- 
Bob Swart Training & Consultancy (eBob42) - Borland Technology Partner
Blog: http://www.drbob42.com/blog - RSS: http://drbob42.com/weblog.xml