{"id":4139,"date":"2014-01-06T11:17:20","date_gmt":"2014-01-06T03:17:20","guid":{"rendered":"http:\/\/www.vbtutor.net\/?page_id=4139"},"modified":"2018-06-23T11:38:58","modified_gmt":"2018-06-23T03:38:58","slug":"writing-the-vb-code","status":"publish","type":"page","link":"https:\/\/www.vbtutor.net\/index.php\/writing-the-vb-code\/","title":{"rendered":"Visual Basic 2013 Lesson 4: Writing the Visual Basic Code"},"content":{"rendered":"

[Lesson 3] <\/a><< [Contents] <\/a>>> [Lesson 5]<\/a><\/strong><\/h4>\n

In the preceding lesson, you have learned how to design the user interface by inserting\u00a0controls to the form and changing their properties. However, the controls will not function\u00a0without adding code to them.\u00a0 Therefore,\u00a0 we shall learn how to write code for all the controls so that they can interact with events triggered by the users. However, before learning how to write Visual Basic code, let me first explain\u00a0the concept of event-driven programming<\/p>\n

4.1 The Concept of Event-Driven Programming<\/h3>\n

Visual Basic 2013 is an event-driven programming language, which means that the code is executed in response to events. In addition, every control(object) you place on the form has a set of events related to them.\u00a0Some of the events are load, click, double click, drag, and drop, pressing the keys and more.<\/p>\n

In order to view the events, you need to double-click the control on the form to enter the code window.\u00a0 The default event will appear at the top portion on the right side of the code window.\u00a0 In addition, you need to click on the default event to view other events associated with the control.\u00a0 As you shall see, the VB code appears on the left side is the event procedure associated with the load event. Figure 4.1 illustrates the event procedure load<\/strong> associated with the default form.
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