in microsoft acces the combobox list column of table and insert the value in the same table, but i can type a new value, in delphi if use a query of table in list source an table in datasource, function but i cant type a value if not exist in query
this use in my aplication where edit a column can use value in the column of the same table o insert a new value
Creating an auto free TStringList
The TStringList is a basic and frequently used object in Delphi. On many occasions, you may want to create a temporary list, process some items in the list and be done with the list.
In such cases, you have to…
This Article will show you how to validate number with TEdit control,
What's the TEdit control?
TEdit is a standard Windows edit control on a form, it allows to user to write, read and copy/paste single line of text.
Although Jacob Bernoulli (1654-1705) has been credited as the creator of "Binomial Distribution Table", Gottfried Leibniz (1646-1716) did his dissertation on the subject in 1666; Leibniz you may recall is the co-inventor of "Calculus" and beat Isaac…