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Creating VB database applications using ADO control
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 Creating VB database applications using ADO control
Data control is not a very flexible tool as it could work only with limited kinds of data and must work strictly in the Visual Basic environment. To overcome these limitations, we can use a much more powerful data control in VB known as ADO control.
In Lesson 19 and Lesson 20, we have learned to build VB database applications using data control. However, data control is not a very flexible tool as it could work only with limited kinds of data and must work strictly in the Visual Basic environment. To overcome these limitations, we can use a much more powerful data control in VB known as ADO control. ADO stands for ActiveX data objects. As ADO is ActiveX-based, it could work in different platforms (different computer systems) and different programming languages. Besides, it could access many different kinds of data such as data displayed in the Internet browsers, email text and even graphics other than the usual relational and non relational database information.
To be able to use ADO data control, you need to insert it into the toolbox. To do this, simply press Ctrl+T to open the components dialog box and select Microsoft ActiveX Data Control 6. After this, you can proceed to build your ADO-based VB database applications.
The following example will illustrate how to build a relatively powerful database application using ADO data control. First of all, name the new form as frmBookTitle and change its caption to Book Tiles- ADO Application. Secondly, insert the ADO data control and name it as adoBooks and change its caption to book. Next, insert the necessary labels, text boxes and command buttons. The runtime interface of this program is shown in the diagram below, it allows adding and deletion as well as updating and browsing of data.
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3.5(out of 5)