Visual Basic .NET is an object-oriented programming language used to create Windows applications with visual objects like buttons and text boxes. It is event-driven, meaning the program runs when the user interacts with objects like clicking buttons, which triggers events. The Visual Basic .NET development environment includes a design window to layout objects, a toolbox of common objects, and windows to set object properties and view code. Common objects include forms, labels, menus, and buttons, each with properties like text, font, and alignment to configure their appearance and behavior.

1. Visual Basic .NET Windows application An interface with visual objects for communicating with the user Buttons, check boxes and text boxes Object-oriented programming language Performing tasks with objects... The user interacts with the program Event-driven application Program runs when the user does something An event can occur when the user interacts with an object…clicking a button

2. Visual Basic .NET Design Window Solution Explorer window Toolbox Design window Properties window

3. Visual Basic .NET Objects Form A graphical object that contains a title bar and close buttons The main work space for your program Text property – what is displayed in its title bar Label Displays text that cannot be changed by the user Text property – the text displayed in the label Font property – font, style and size of text TextAlign property – alignment of text in the label MainMenu A list of options in menu form Text property – will display the menu name

4. Naming Objects Name property Descriptive name for object An appropriate prefix and description of purpose Ex: lblMessage – a label that displays a message Do not change the form name…your program won’t work! Label lbl Message Menu mnu Exit RadioButton rad On Button btn Calculate