http://dn.codegear.com/article/29176 2008-11-21T16:12:54-08:00 joan llosas http://threads.codegear.com/threads/threads.exe/userall?commentid=35107 http://threads.codegear.com/threads/threads.exe/view?commentid=35107 2003-08-11T22:12:17-07:00 2003-08-11T22:12:17-07:00

Error

There is an error at the end of the articleWhere it saidThe following figure shows the main form of the CDSSearch project following a call to Locate. Notice that the current record is still the first record in the ClientDataSet, even though the data returned from the call to Locate was found much later in the current index order.Locate must be replace by LookUp. Manny Ramirez http://threads.codegear.com/threads/threads.exe/userall?commentid=33360 http://threads.codegear.com/threads/threads.exe/view?commentid=33360 2002-10-22T08:53:06-07:00 2002-10-22T08:53:06-07:00

Problems with IndexFieldName with string fields !!!

The order of my query (without index) is:DESCRIPTION-----------------------ACCES P'ADORNACCES P'AJUSTACCES P'ASPIRACCES P'BATHACCES P'COURTACCES P'SOLDACCES PARA PUERTAACCES PLAST...When i do this, i lost the order of the records: cdsQuery.IndexFieldNames:= DESCRIPTIONThe result is:DESCRIPTION-----------------ACCES P'ADORNACCES P'AJUSTACCES PARA PUERTAACCES P'ASPIRACCES P'BATHACCES P'COURTACCES PLASTACCES P'SOLDCan you help me to resolve this problem ? Daniel Ardelian http://threads.codegear.com/threads/threads.exe/userall?commentid=33306 http://threads.codegear.com/threads/threads.exe/view?commentid=33306 2002-10-12T02:28:37-07:00 2002-10-12T02:28:37-07:00

Using GetBookmark / GotoBookmark / FreeBookmark

Usually, when searching a DataSet, the user prefers that the current record is changed only if a match is found. For that purpose, I found very useful to call the GetBookmark, GotoBookmark, FreeBookmark functions (implemented in TDataSet, an ancestor of TClientDataSet). Roger Graham http://threads.codegear.com/threads/threads.exe/userall?commentid=33289 http://threads.codegear.com/threads/threads.exe/view?commentid=33289 2002-10-10T01:33:56-07:00 2002-10-10T01:33:56-07:00

Use of Filter

Great overview. I've never used Locate, every day you learn something.How does filter compare as an access mechanism? It is particularly useful if the results are linked to data aware controls as all the other methods leave the data aware controls pointing to incorrect data if the locate/search etc fails. What are the performance implications, particularly on large datasets?RegardsRoger Graham