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| MemTable.FieldByName.NewValue-OldValue https://forum.ehlib.com/en/viewtopic.php?f=5&t=181 |
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| Author: | arnikos [ 28 Oct 2012, 10:52 ] |
| Post subject: | MemTable.FieldByName.NewValue-OldValue |
Dear Dmitry I have the following problem with MemTable: I use a TmemTableEh Component with Property CachedUpdate=True, connected to a DatasetDriver Component with DataProvider a TQuery Component. In my program the code is as below: MemTable.open; MemTable.Edit; ... < After Editing > if MemTable.FieldByName('fieldname').OldValue<>MemTable.FieldByName('fieldname').NewValue then <do something> else <do something else> The problem is that MemTable.FieldByName('fieldname').OldValue allways return Null and not the old Value of the Field. EhLib V5.6 Best regards Nicholas |
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