VB

• Visual Basic


  A third-generation event-driven programming language first released by Microsoft in 1991
• Visual Basic


  • Allows anyone to develop GUI (Graphical User Interface) Windows desktop applications
• Visual Basic 6 (VB6)


  The final version of the classic Visual Basic
• Visual Basic.NET


  Released by Microsoft in 2002
• Versions of VB.NET


  • Visual Basic 2005
  • Visual Basic 2008
  • Visual Basic 2010
  • Visual Basic 2012
  • Visual Basic 2013
  • Visual Basic 2015
  • Visual Basic 2017
  • Visual Basic 2019
  • Visual Basic 2022
• Visual Studio 2022

  Released in early 2022, allows you to code in different programming languages & different Platforms, among them is Visual Basic 2022
• Programming languages in Visual Studio 2022

  • C#
  • C++
  • F#
  • JavaScript
  • Java
  • Python
• Visual Basic 2022


  Primarily used for software development, based on the programming language BASIC
• Three-step process

  1. Creating the interface

  2. Setting the properties

  3. Writing the Code
• Visual Basic Screen Elements

  • Title Bar
  • Menu Bar
  • Tool Bar
  • Tool Box
  • Data Sources
  • Form Window
  • Project Container Window
  • Solution Explorer Window
  • Properties Window
  • Description Pane
• Text Box


  Used to accept textual input from the individual, can include strings, numerical values, and a mix of those, but not images and other multimedia material
• Label


  Used to display any message to the user, the text in a label does not change while the application is running
• Button


  Used as a typical Windows Button, most often used to generate a click event, its name, size and appearance are not altered at runtime
• Picture Box


  Used to display images in the design
• VAL


  Stands for VALUE, function that converts the string containing numbers to an actual number
• Basic principles in designing a GUI

  • The application should always be under the user's control
  • The user should be able to customize the application to meet his/her preferences
  • The interface should be designed to provide direct ways to accomplish tasks
  • Use concepts and metaphors that users are familiar with to make the interface parallel real-world experience
  • Applications should follow basic graphics design principles and should be consistent visually and functionally
  • The user always should receive immediate feedback after initiating an event
  • The application should attempt to prevent users from making mistakes as much as possible
• Visual basic consists of more than 1 window
• A project always begins with a form
• Point to a control and double click it to open the code window or that control
• Controls


  The visual elements common to Windows applications (such as check boxes, option button, list boxes etc.)
• Procedures


  Operations or services
• Title Bar - The horizontal bar located at the very top of the screen which gives the name of the application.
• Menu Bar - Built-in menus appear on the menu bar across the top of the Visual Basic window. Each menu contains commands that relate to the menu name.
• Tool Bar - The toolbar provides access to commonly used commands via icon buttons; these commands are a subset of the commands accessible from the menu bar.
• Tool Box - Located at the left of the screen which contains the controls you use to build the interface of your application.
• Data Sources - . NET objects that connect to a data store and make the data available to a . NET application.
• Description Pane - provides the user with additional information or quick access to features commonly used in a program.
• Properties Window - Located at the right of the screen which is used to change the attributes of the controls of your application.
• Solution Explorer Window - Located at the far right of the screen which contains a Window Explorer-like tree view of all the forms and general code that make up your application.
• Project Container Window - Occupies most of the screen and is where you design the interface of your application.
• Form Window - Visual Basic Form is the container for all the controls that make up the user interface.