Help newbie: Multi-tier client update.

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2 total messages Started by mike Fri, 11 Jun 1999 00:00

#1726

Author: mike
Date: Fri, 11 Jun 1999 00:00

5 lines
839 bytes

I'm testing to develop a multi-tier database application program, using
RemoteDataModule, TProvider, TMIDASConnection and TClientDataSet as
described in C++ Builder 3 example, everything work fine, but my problem is
I want my other clients automatically refresh their ClientDataSets when I
add, edit, or delete any record in my computer.

Re: Help newbie: Multi-tier client update.

#1734

Author: Jim
Date: Thu, 17 Jun 1999 00:00

21 lines
1062 bytes

Try the following:

In the Client tier,all updates must be applied by calling
TClientDataSet method "ApplyUpdates()",
So,you can write event handlers for a ClientDataSet that include
AfterInsert,AfterDelete,AfterEdit etc.

void __fastcall TForm1::ClientDataSet1AfterInsert(TDataSet *DataSet)
{
  try
  {
     ClientDataSet1->ApplyUpdates(-1); /*Apply all updates*/
  }
  catch(...)
  {
    ..... Error handle.....
  }
}


Hope it works,I'm newbie too :)

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