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Course Title: Visual Basic Programming

University Of Hargeisa Faculty Of ICT & Distance Learning. Course Title: Visual Basic Programming Topic: Introduction to programming Languages (Visual basic 6.0) Lecturer : Mahamud Ahmed Jimale, BsIT, MsCs, CCNA, CEH. What is a Programming language?.

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Course Title: Visual Basic Programming

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  1. University Of Hargeisa Faculty Of ICT & Distance Learning Course Title: Visual Basic Programming Topic: Introduction to programming Languages (Visual basic 6.0) Lecturer: Mahamud Ahmed Jimale, BsIT, MsCs, CCNA, CEH

  2. What is a Programming language? A programming language is an artificial language designed to express computations that can be performed by a machine, particularly a computer. Programming languages can be used to create programs that control the behavior of a machine. 2

  3. What is a Programming language? 3

  4. Low level Vs High-level Programming Languages 4

  5. GENERATIONS OF PRGRAMMING LANGUAGES 1st Generation: Machine Language (1940s) Binary (1010 1011), Hex (9B) 2nd Generation: Assembly Language (early ’50s) Used in HW instruction sets (e.g., LOD X, ADD Z, STR Y) 3rd Generation: High-level Languages (mid ‘50s) Procedural (e.g., input x, y=x+z, output y) 4th Generation: Modern tools (late ‘70s) (e.g., SELECT UserID, LastName FROM Clients WHERE State=“PA”

  6. Who can be a successful programmer? • Logical • Patient • Perceptive (observant) • At least moderately intelligent • Enjoys an intellectual challenge 6

  7. What is Visual Basic? Visual Basic is a programming language used to create Windows based applications. Visual Basic is based on the old BASIC (Beginner’s All-Purpose Symbolic Instruction Code) language 7

  8. Features of Visual Basic • GUI development environment for developing Windows applications. • Object based development is possible using Class modules. • Rapid Application Development (RAD). • Can create COM components such as ActiveX Controls, DLLs and EXEs. • Many internet development possibilities. • Has an excellent integrated Help facility and Books Online. • Good debugging facilities. 8

  9. Visual Basic Advantages • A shorter learning curve and development time than C/C++, Delphi or even PowerBuilder. • Allows for rapid application development. • Is excellent for business applications. •Allows you to create ActiveX controls. • Allows you to reuse third-party, as well as your own, controls and components. • Is object-oriented in nature. It is not a complete OOP language, but it is getting closer. •Can integrate with the Internet both server and client-side. 9

  10. Visual Basic Disadvantages •Runtime distribution requirements are larger than C/C++. •Not as much functionality as C/C++ in getting to features of the OS. 10

  11. Versions of Visual Basic • Visual Basic Learning Edition • Visual Basic Professional Edition • Visual Basic Enterprise Edition 11

  12. Visual Basic Application Types • Standard EXE • ActiveX EXE • ActiveX DLL • ActiveX Control • ActiveX Document DLL • ActiveX Document EXE • IIS Application • DHTML Application 12

  13. Visual Basic Application Types 13

  14. Three Steps to Creating an Application 1. Create the interface. 2. Set properties for controls. 3. Write code. 14

  15. Visual Basic Application Components • Projects • Forms • Controls • Code Modules • Class Modules • User Controls • Property Pages • User Document (ActiveX Document) • IIS Applications • DHTML Applications • Resource Files 15

  16. A Visual Basic Application 16

  17. Visual Basic InteIDE Run button Stop Button Pause 17

  18. The ToolBox 18

  19. The Project Window (or Project explorer window) 19

  20. The Code editor window 20

  21. Creating a New Project, Hello project • Open File menu, select New Project (or just press CTR-N) • Select StandardEXE project, then Click OK • Click the new form windows. • In the properties windows, change the name property, to frmHello, and caption property to Hello application. • Add a button control to the form. • Change the name property to command button to cmdHello, and caption property to &Display • Double click the command button to display the code editor window. • Between the two lines that appear type your code eg” Msgbox “Hello, this is a new application!” • Save the new form with fromHello.frm, save the project with Hello.vbp name • Run the project by clicking the run button, or by pressing F5 • Click the display button (A dialog box with “Hello” message should appear 21

  22. VB Object Naming Conventions 22

  23. Creating a New Project, Hello project 2 3 1 4 5 23

  24. Class exercise, design, code and run the following application label Code for Go button Text Box Shape control label Code for end button Text Box 24

  25. Question & Answer

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