1.  Visual Basic is an object-oriented language used to write application programs that run in Windows or on the Internet using a graphical user interface (GUI).  The three steps to creating a Visual Basic project are (1) define the user interface, (2) set the properties, and (3) write the Basic code. 1- 1

2.  Design/Define the User Interface  Plan/Set the Properties  Plan/Write the Code  Test and Debug 1- 2

3.  Windows Graphical User Interface  Window = Form  Toolbox of elements called Controls ◦ Text Box ◦ Label ◦ Check Box ◦ Button 1- 3

4.  Procedural ◦ Program specifies exact sequence  Event Driven (VB 6.0 and previous)  Object Oriented Programming (VB.NET) ◦ User controls sequence  Click event  Double Click event  Change event 1- 4

5.  Object ==> Noun ◦ Form and Controls  Property ==> Adjective ◦ Color of a Form  Method ==> Verb ◦ Move a Form  Event ==> Occur when the user takes action ◦ User clicks a button, User moves a form  Class ==> Template to create new object ◦ Each control added is an Instance of a Class 1- 5

6.  Used to reference object's properties and methods in code ◦ Object dot Property  Form.Text, TextBox.Text ◦ Object dot Method  Form.Hide( ), TextBox.Focus( )  To reference an object's events use an underscore instead of a dot  Button_Click, ListBox_TextChanged 1- 6

7.  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 1- 7

8.  One Solution File.sln  Solution User Options File.suo  Project Files.vbproj  Project User Options File.vbproj.user  Form Files.vb  Resource File for the Form.resx 1- 8 Open this file directly to work on a Project

9.  Integrated Development Environment (IDE)  Form Designer  Editor for entering code  Compiler  Debugger  Object Browser 1- 9

10.  Toolbars  Document Window  Form Designer  Solution Explorer  Properties Window  Toolbox 1- 10

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13.  Holds the tools you place on a form 1- 13

14.  Design Time  Run Time  Break Time 1- 14 “Look at the Title Bar”

15.  Always use standard names for objects  No spaces or punctuation marks  3 letter lowercase prefix identifies control type  Button-btn  Label-lbl  Form-frm  If multiple words capitalize 1st letter of each word 1- 15

16. 1- 16 Object ClassPrefixExample FormfrmfrmDataEntry ButtonbtnbtnExit TextBoxtxttxtPaymentAmount LabellbllblTotal Radio ButtonradradBold CheckBoxchkchkPrintSummary Horizontal ScrollBarhsbhsbRate Vertical ScrollBarvsbvsbTemperature PictureBoxpicpicLandscape ComboBoxcbocboBookList ListBoxlstlstIndegredients

17. 1- 17 lblMessage btnPush btnExit

18. 1- 18 Rename Label1 to lblMessage

19.  Label ◦ NamelblMessage ◦ Textleave blank  Button 1 ◦ NamebtnPush ◦ TextPush Me  Button 2 ◦ NamebtnExit ◦ TextExit  Form ◦ NamefrmHello ◦ TextHello World by your name 1- 19

20.  The default startup object if Form1  The name of the form should always be changed to adhere to naming rules  Using Project menu, Properties change the startup object to match the new name 1- 20

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22.  While the project is running the user can perform actions  Each action by the user causes an Event to occur  Write code for the events you care about, the events you want to respond with code  Code is written as event procedures  VB will ignore events for which you do not write code 1- 22

23.  Declarations Section  Class list  Method list 1- 23

24.  Also known as Comment, used for documentation  Non-executable  Automatically colored Green in Editor  Begins with an apostrophe ( ' ) ◦ On a separate line from executable code ◦ At the right end of a line of executable code 1- 24 ' Display the Hello World message

25.  Assigns a value to a property or variable  Operates from right to left  Enclose text strings in quotation marks (" ") 1- 25 lblMessage.Text=" Hello World "

26.  Execute the Close Method of the Form  Methods always have parentheses (this will help you distinguish them from Properties which never have parentheses)  Current Form may be referenced as Me 1- 26 Me.Close( )

27.  Save Project - File Menu, Save All  Run Project ◦ Debug Menu, Start ◦ Start Without Full Compile (F5) ◦ Start With Full Compile(CTRL F5)  Correct any Errors and Rerun ◦ Compile errors ◦ Run-Time Errors ◦ Logic errors ◦ Syntax errors 1- 27 "Help is always available from the Help Menu or by pressing F1."