Hi,
I want a memory dataset like VirtualTable [1]and really I cant
understand what are these bufdataset and memdataset and wiki[2] page as
I cant make bufdataset works without a file. I want an easy to sue
memory dataset without any file usage.
Yes there is a way to use TMemDataset like this as @Thaddy said:
> program memdbtest; {$apptype console}{$mode objfpc} uses db,memds;
> var MemDb:TMemDataset; begin MemDb:=TMemDataset.Create(nil); try
> MemDb.FieldDefs.Add('NAME',ftString,20); MemDb.CreateTable;
> MemDb.Open; MemDb.Append; MemDb.FieldByName('NAME').Value:='Free';
> MemDb.Post; MemDb.Append;
> MemDb.FieldByName('NAME').Value:='Pascal'; MemDb.Post;
> MemDb.SaveToFile('MemDb.txt'); // as long you do not close, you don't
> have to save finally MemDb.Close; MemDb.Free; end; end.
But as you can see it use memds unit that CodeTools has problem with
memds unit and also it will replace it with MemDataSet unit that has a
different TMemDataset without CreateTable option.
Also Wiki [3]says that BufDataset is a better choice but is it really?
and is it a choice for using as a memory dataset?how?
Regards, Ara
Links:
1. https://www.devart.com/vtable/
2.
http://wiki.freepascal.org/How_to_write_in-memory_database_applications_in_Lazarus/FPC
3.
http://wiki.freepascal.org/How_to_write_in-memory_database_applications_in_Lazarus/FPC#Introduction
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