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<hr><p align="left"><small>发信人: strayli (stray), 信区: Delphi <br>
标 题: A Technical View of Borland MIDAS Part II (3) <br>
发信站: BBS 水木清华站 (Thu Nov 12 22:13:04 1998) WWW-POST <br>
<br>
The Briefcase Model <br>
<br>
<br>
The briefcase model depends on two methods of TClientDataSet called <br>
LoadFromFile and SaveToFile: <br>
<br>
CustomerClientDataSet.SaveToFile('Customer.dta'); <br>
<br>
<br>
<br>
CustomerClientDataSet.LoadFromFile('Customer.dta'); <br>
<br>
If you have two tables you want to save, then you should save and read them <br>
both to separate files: <br>
<br>
procedure TForm1.BriefcaseSave1Click(Sender: TObject); <br>
<br>
begin <br>
<br>
CustomerClientDataSet.SaveToFile(CustomerFile); <br>
<br>
OrdersClientDataSet.SaveToFile(OrdersFile); <br>
<br>
end; <br>
<br>
Clearly the act of saving and reading files from disk is trivial in the <br>
extreme. However, there are some additional points that you need to take into <br>
consideration to use the briefcase model properly. Most of these points will <br>
be covered in the next section on PacketRecords. <br>
<br>
<br>
-- <br>
※ 来源:·BBS 水木清华站 bbs.net.tsinghua.edu.cn·[FROM: 202.38.72.60] <br>
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