Hello, Imagine a situation where you have to create 5 ado connections; 6 adoqueries, an indy smtp, indy ftp component then use them.
I'd rather drop them on a datamodule then create the datamodule on the fly and use all the components within, better than creating them one by one then freeing them one by one. Chris PO Box 627 00502 Karen, Nairobi, Kenya. Mobile: +254 722 996532 Fixed: +254 20 2050859 [EMAIL PROTECTED] -----Original Message----- From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of Theodoros Bebekis Sent: 17 January 2008 4:00 p To: [email protected] Subject: Re: [delphi-en] TDataModule or TADODataSet.Create O/H anomander1 έγραψε: > > > Hello, > > I have a question regarding the use of TDataModule. > When i first started using Delphi, i always set Datafiles on > TDataModule. Now though, i code my datasets with > > ado := TADODataSet.Create..... > > Can anyone point me in the direction of what i should use? > using ado := ... seems faster for me to use. > Is there any reason why i should not do this? > > TIA > > Marco TDataModule is JUST a TComponent with a .dfm resource visible at design-time. It could be usefull to a programmer who prefers the design-time "coding" that is using the Object Inspector. There is nothing magical to it. Droping components on a TDataModule gives you the impression of easyness and speed in programming. Everything droped on it is automatically destroyed. But you can not control the order of distruction. Unless you code it. You can have the same functionality by just coding it by hand. The way you do ado := TADODataset.Create.... In fact, I prefer this second way because it gives a better oversight to the programmer. You may code your own "version" of a TDataModule-like class, to be more general and more usefull and more suitable to many cases. Say a TComponent descendant (TBaseModule?) with a windows handle, capable of receiving messages, which provides a set of virtual methods like Select(ID: Integer), Delete(ID: Integer) etc etc, and which represents a set of relative database tables, with one of them as the top table. Of cource you can have the same result by having TDataModule as your base class. -- Regards Theo ------------------------ Theo Bebekis Thessaloniki, Greece ------------------------ Greek_Delphi_Prog : a Delphi Programming mailing list in Greek at http://groups.yahoo.com/group/Greek_Delphi_Prog CSharpDotNetGreek : A C# and .Net mailing list in Greek language at http://groups.yahoo.com/group/CSharpDotNetGreek atla_custom : a Unisoft Atlantis Customization mailing list at http://groups.yahoo.com/group/atla_custom ------------------------ ----------------------------------------------------- Home page: http://groups.yahoo.com/group/delphi-en/ To unsubscribe: [EMAIL PROTECTED] Yahoo! Groups Links ----------------------------------------------------- Home page: http://groups.yahoo.com/group/delphi-en/ To unsubscribe: [EMAIL PROTECTED] Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/delphi-en/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/delphi-en/join (Yahoo! ID required) <*> To change settings via email: mailto:[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
