TDataSet.Locate without change position
lazarus / 16-Databases

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totya · 2015-05-03 15:23

Hi!

From help: "If a record is found that matches the criteria, then the
locate operation positions the cursor on this record, and returns
True."

Okay, but now I want to know, this value exists or not, without
position is changed.
This is possible anyhow?

(store an restore position isn't good idea)

Thanks!

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BitBangerUSA · 2015-05-03 15:41

sounds like you are asking for/about 'Lookup'
http://www.freepascal.org/docs-html/fcl/db/tdataset.html

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LacaK · 2015-05-03 17:07

Quote from: totya on May 03, 2015, 05:23:46 pmFrom help: "If a record
is found that matches the criteria, then the locate operation
positions the cursor on this record, and returns True."
And help http://www.freepascal.org/docs-
html/fcl/db/tdataset.locate.html continues:
If no record is found to match the criteria, False is returned, and
the position of the cursor is unchanged.

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totya · 2015-05-03 19:17

Quote from: BitBangerUSA on May 03, 2015, 05:41:05 pmsounds like you
are asking for/about 'Lookup'
http://www.freepascal.org/docs-html/fcl/db/tdataset.html

Hi!

Thanks for the answer, I will try it!