In this step by step tutorial for beginner, learn how to use TDatasource to retrieve data from the form. TDataSource serves as a bridge between dataset components and data-aware controls on a form. It simplifies the process of binding data to UI elements and ensures smooth interaction between the database and the user interface.
In this tutorial video, we will guide you on how to use the TDataSource object in the OnBeforeSave event script to validate the Sub Total amount calculations. Such that, this script can ensure the amount would be recorded correctly according to the formula.
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00:00–00:17 Introduction
00:18–01:16 Usage of TDatasource
01:17–01:58 Tutorial of using TDatasource
01:59–02:27 While Loop
02:27–03:24 Main Function
03:25–04:07 Ending Demo
