{"id":5825,"date":"2015-03-17T17:35:26","date_gmt":"2015-03-17T09:35:26","guid":{"rendered":"http:\/\/www.vbtutor.net\/?page_id=5825"},"modified":"2018-06-22T16:17:16","modified_gmt":"2018-06-22T08:17:16","slug":"visual-basic-2015-lesson-4-writing-code","status":"publish","type":"page","link":"https:\/\/www.vbtutor.net\/index.php\/visual-basic-2015-lesson-4-writing-code\/","title":{"rendered":"Visual Basic 2015 Lesson 4: Writing the Code"},"content":{"rendered":"

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

In lesson 3, we have learned how to design the user interface by adding controls to the form. Besides that, we have also learned how to change their properties. However, the controls on the user interface alone will not work without adding code to them. In this lesson, we shall learn how to write Visual Basic 2015 code for all the controls. The code is necessary for a control to respond to events triggered by the users. Before learning how to write Visual Basic 2015 code, let us dwell into the concept of event-driven programming.<\/p>\n

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

Visual Basic 2015 is an event-driven programming language, which means that the code is executed in response to events. We have learned how to design the interface by putting controls(objects) on the form, but they do nothing unless we write code for the objects to respond to events triggered by the user. Every control you place on the form has a set of events related to them.
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