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.
I have seen many questions in this Delphi topic area where queries in threads are needed or suggested. I know bumped into a similar need.
This article will address some of the concepts when dealing with a multithreaded delphi database…