Visual basic
- 1. 05/18/16Mr. Roger C. Argarin 1 Introduction to visual basic programming
- 2. Lecture 1: Introduction 05/18/16Mr. Roger C. Argarin 2 Introduction – Learning objectives of the class Introduction to Visual Basic Brief History of Visual Basic Basic Concept of Visual Basic Programming Language Programming Environment Use Microsoft Visual Studio .NET2005
- 3. Learning Objectives 05/18/16Mr. Roger C. Argarin 3 Visual program design and development Fundamentals of Object Oriented Programming (OOP) Event driven programming Objects, properties and methods Write Visual Basic projects
- 4. History of Visual Basic 05/18/16Mr. Roger C. Argarin 4 The Visual Basic programming language was developed by Alan Cooper, an American scientist in the late 1980’ This programming language was created with the main purpose of teaching programmers and developers how to design graphical-user interface (GUI) programs easily.
- 5. Overview of Programming 05/18/16Mr. Roger C. Argarin 5 The Structure and Operation of a Computer Computer system: hardware and software Processor (registers, primitive operations) Main memory (RAM, ROM) Data types (integers, real, floating-point numbers, strings, etc.) Sequence and Data Control Storage management Operating environment
- 6. Overview of Programming (continue) 05/18/16Mr. Roger C. Argarin 6 Computer System (PC) Hardware Software Processor, Memory Data types, Sequence and Data Control, Storage Management, Operating Environment
- 7. Major Components of Computer Systems 05/18/16Mr. Roger C. Argarin 7 Input Unit (keyboard, mouse, scanner, Internet through TCP/IP) Central Processing Unit (CPU) Output Unit Memory Unit Primary memory (RAM, ROM) Secondary memory (Hard drives, zip disks, floppy disks, etc)
- 8. Object Technology 05/18/16Mr. Roger C. Argarin 8 Objects are essentially reusable software components that model items in the real world, such as windows cars, vehicles, and so on Object technology is a packaging scheme that enables programmers to create meaningful software units. Object-Oriented Programming tends to produce software that is more understandable, better organized, and easier to maintain, modify and debug.
- 9. Object Model 05/18/16Mr. Roger C. Argarin 9 Object ==> Noun Form and Controls Property ==> Adjective Color of a Form Method ==> Verb Move a Form Event ==> Occurs when the user takes an action User clicks a button, User moves a form Class ==> Template to create new object Each control added is an Instance of a Class
- 10. Dot Notation 05/18/16Mr. Roger C. Argarin 10 Used to reference object's properties and events in code Object dot Property Form.Text, TextBox.Text Object dot Event Form.Hide( ), TextBox.Focus( ) To reference an object's events use an underscore instead of a dot Button_Click, ListBox_TextChanged
- 11. Object Model Analogy 05/18/16Mr. Roger C. Argarin 11 Class = automobile Properties = make, model, color, year Object = each individual car Object is also an Instance of the automobile class Methods = start, stop, speedup, slowdown Events = car arrives, car crashes
- 12. Visual Basic .NET Programming 05/18/16Mr. Roger C. Argarin 12 Learning Visual Basic.NET Programming Language includes to learn: The graphical user interface or GUI (“gooey”) which is an essential component of visual programming The GUI defines how various elements look and function Visual Basic programming language Microsoft Developers Network Homepage for VB.NET: http://msdn.microsoft.com/vbasic
- 13. A Sample Graphical User Interface (GUI) 05/18/16Mr. Roger C. Argarin 13 Label GroupBox RadioButtons TextBox PictureBox Buttons Form
- 14. VB.NET Program Development 05/18/16Mr. Roger C. Argarin 14 To create a VB.NET program you will utilize the Visual Basic .NET 2005 development environment, and you will create a window, called form select elements, which are classes, from a toolbox and place them within the window, called controls write code for each object that you place on the window that defines how the object responds to various events, called object-oriented programming (OOP).
- 15. Event-Driven Programming 05/18/16Mr. Roger C. Argarin 15 The style of Execution as shown below is called event-driven: A GUI determines how a user interacts with the program Each user interaction with the computer: pressing a key, clicking a button, or selecting a menu item causes an event to occur Whenever an event occurs, the code you have written to handle that event is executed
- 16. About Visual Studio .NET Framework 05/18/16Mr. Roger C. Argarin 16 Visual Studio .NET 2005 includes: Visual Basic, Visual C++, C#, J#, and the .NET framework. The .NET framework allowing objects from different languages to operate together The .NET languages-based programs all compile to a common machine language, called Microsoft Intermediate Language (MSIL) The MSIL code runs in the Common Language Runtime (CLR), which is part of the file .NET framework.
- 17. VB.NET Program Development Process 05/18/16Mr. Roger C. Argarin 17 Planning (design) design the GUI (user interface) list the objects and properties needed plan the event procedures (what the code does) Programming (implementation) define the GUI using objects (Forms, Text Boxes, Labels, etc. set the properties write BASIC code to implement procedures
- 18. VB.NET Application Files 05/18/16Mr. Roger C. Argarin 18 Each Visual Basic application create the following files with extensions: .sln - a solution file that holds information about the project. This is the only file that is opened .suo - a solution user options file that stores information about the selected options .vb - a .vb file that holds the definition of a form .resx - a resource file for the form .vbproj - a project file that describes the project and lists the files are included .vbproj.user - a project user option file that holds project option settings
- 19. Using Microsoft Visual Studio .NET 05/18/16Mr. Roger C. Argarin 19 Click on -> Start Choose -> All Programs Choose -> Microsoft Visual Studio .NET 2005 Click on -> Microsoft Visual Studio .NET 2005
- 20. Using Microsoft Visual Studio .NET (continue) 05/18/16Mr. Roger C. Argarin 20 • Click on-> File • Choose -> New • Select- > Project
- 21. Using Microsoft Visual Studio .NET (continue) 05/18/16Mr. Roger C. Argarin 21 The Microsoft VS Development Environment is also called integrated development environment (IDE): A form designer A code editor A compiler A debugger An object browser
- 22. Using Microsoft Visual Studio .NET (continue) 05/18/16Mr. Roger C. Argarin 22 Menu bar – includes file, edit, view, project, build, debug, data, format, tools, window, and help menu Toolbar - includes many buttons as shortcuts for frequently used operations. Each button represents a command that can be selected from a menu. Most toolbars’ buttons are displayed in the main window of the IDE Each window can be moved, resized, opened, closed, or customized Menu bar Toolbar Menu bar Toolbar
- 23. 05/18/16Mr. Roger C. Argarin 23 Form window Properties window Solution Explorer window Menu bar Tabs Toolbox Tool bar
- 24. The Toolbox 05/18/16Mr. Roger C. Argarin 24 Click Toolbox from the Toolbar s Toolbox contains a list of tools that helps to design projects
- 25. Solution Explorer 05/18/16Mr. Roger C. Argarin 25 View Code View Design/ Form Properties welcome.slnwelcome.sln
- 26. The Property Window 05/18/16Mr. Roger C. Argarin 26 •The properties window allows you to see and set all of the properties of the particular object that you have placed on the form. There are many properties for each object, and all can be seen by scrolling down the properties window.
- 27. Summary 05/18/16Mr. Roger C. Argarin 27 Introduction – Learning Objectives of the class Introduction to Visual Basic .NET2005 Basic Concept of Visual Basic Visual Basic Programming Language Use Microsoft Visual Studio .NET2005 Next - First Visual Basic Planning and Programming
Editor's Notes
- #24: Here are more details of each window that opens when you Start a New Project in Microsoft Visual Basic .NET2005. The IDE main window includes Toolbars, Document Window, Form Designer, Solution Explorer Window, Properties Window, and Toolbox. You should make the Visual Basic main window full-screen in order to see all of the smaller windows. You see the menu bar at the top, and the toolbar right below. If you do not have the same layout as above, go to the View menu from menu bar and select whichever of the windows are not presented. After that, you see the Form window is at the center. The Form window is where you design a form that makes up your user interface. The Form design window of Form1 is currently displaying, you can drag the form’s sizing handles to change the size of the form. When you begin a new Visual Basic windows project, a new form is added to the project with the default name Form1. The most used window is the Toolbox, which is located at the left side of screen. The Toolbox appears when you press the Toolbox Tab on the left of the window, The Toolbox contains all of the controls to be used this semester. The solution explorer window is right next to the Form window. The solution explorer window enables you to select the form or module you want to see or to switch between a form and a Basic code for the project. The properties window is at the right side of screen. The Properties window contains all of the properties of whichever control you have selected on the form and is extremely important because this is where you will change many properties of each object.
- #25: The toolbox holds the tools you need to place controls on a form. You may have more or different tools in your toolbox, depending on the edition of visual basic you are using, such as standard edition, professional edition, or enterprise edition.
- #26: The Solution Explorer window holds the filenames for the files included in your project welcome and a list of the classes it references. The window’s title bar holds the name of your solution file (welcome.sln), which is the name you give it in the New Project dialog box. Here, there is just one form, named Form1, but later we will have more than one form visible in this window.