BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  TList, TObjectList, etc - which to use          BorlandTalk.com Forum Index -> Delphi OO design View previous topic :: View next topic   Author Message xxx@yahoo.com Guest Posted: Sat Sep 10, 2005 3:14 pm    Post subject: TList, TObjectList, etc - which to use I want a non-visual "collection" class that will contain items with fields I'll need to search on. Think Fleet Management here, with collection data retrieved from the DB. I'm in Delphi7 right now. ex: TVEHCollection fVEHNo fCorporationNo fVIN fMake fColor fBodyStyle (one of a set) fStatus fInsPolicyNos (another collection!) I'll need to search on MAKE in one instance, and VIN in another instance, and maybe COLOR in a third, as well as maintain the InsPolicyNos for a selected VIN. Most (not all) of the fields will be strings, and there could be up to 1000 items in the collection. My question relates to basing the class on TList, TObjectList or TStringList (with attached objects), or anything else. Are there distinct properties/behaviors of each class that should guide my decision on which to use... ie, sorting the collection for display by "fOwner" or "fColor", or when destroying such a class? Is there a memory-space issue among the base-class choices? Thanks! JJ Back to top Riki Wiki Guest Posted: Sat Sep 10, 2005 8:18 pm    Post subject: Re: TList, TObjectList, etc - which to use Hoi JJ Take a look here: <http://tinyurl.com/8m5nw> which links to <http://delphi.wikicities.com/wiki/Delphi_Newsgroups> Back to top Matt Guest Posted: Sat Sep 10, 2005 10:18 pm    Post subject: Re: TList, TObjectList, etc - which to use On Sat, 10 Sep 2005 15:14:22 GMT, [email]xxx (AT) yahoo (DOT) com[/email] wrote: Quote: I want a non-visual "collection" class that will contain items with fields I'll need to search on. Think Fleet Management here, with collection data retrieved from the DB. I'm in Delphi7 right now. ex: TVEHCollection fVEHNo fCorporationNo fVIN fMake fColor fBodyStyle (one of a set) fStatus fInsPolicyNos (another collection!) .... JJ Sorry! "TVEHCollection" above s/b "TVEHItem". 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