Visual Basic

Question 1

.NET Framework

Answer 1

The .NET Framework is a software framework that runs primarily on Microsoft Windows. It includes a large library and supports several programming languages which allows language interoperability. The .NET library is available to all the programming languages that .NET supports. Present version is .NET Framework 4

Question 2

Class

Answer 2

Classes contains the definitions of objects including properties and methods.
BUTTON object
Exit TEXT property
cmdExit_Click Click method
Classes are also referred to as templates.

Question 3

Objects include?

Answer 3

Button, CheckBox, Label and TextBox, Listbox

Question 4

Object Naming Convention

Answer 4

Form frm frmFileOpen

Check box chk chkReadOnly

Command Button cmd cmdExit

Label lbl lblWind

List box lst lstState

Text box txt txtLastName

Vertical Scroll Bar vsb vsbTemp

Option (Radio) Button opt optAC

Picture Box pic picJeep

Question 5

Object Naming

Answer 5

Must begin with a letter.

Must contain only letters, numbers, and the underscore character (_).

Punctuation characters and spaces are not allowed.

Must be no longer than 40 characters

Question 6

What is a event?

Answer 6

An event is an action performed on an object. Event-driven subroutines are always in the form:
object_Event

The subroutine “handles” the event that happens to the object.

Question 7

Events example?

Answer 7

Click, CheckChanged, Leave, MouseEnter

Question 8

Properties

Answer 8

A property is an attribute associated with an object. Using the dot form: object.Property

Properties can be assigned during design or run time.

Question 9

Properties Examples?

Answer 9

Text, BackColor, ReadOnly, SelectionMode

Question 10

Methods

Answer 10

A method is like a procedure, except that it is tied to an object (control or form), just like a property. In other words, a property is made up of data attached to the object, and a method is a procedure attached to the object. Unfortunately, methods also use the dot form:
object.Method

Question 11

Additional Method vs. Object Property Information?

Answer 11

Furthermore, a method is invoked by simply using the method statement.
frmGetFile.Show()

Whereas an object property is only part of a statement such as assignment.
txtTemp.BackColor = Color.Red

Question 12

Ways to tell methods and properties apart

Answer 12

Methods are usually verbs (denoting action) like Hide or Select:
frmMain.Hide()

Properties are descriptive like ForeColor or Text:
lblLetterGrade.Text=”A”

Question 13

For some methods, do you specify the class from which it is called and the syntax is different?

Answer 13

Yes, for some methods, you must specify the class from which it is called and the syntax is different.
                    Class.Method(arg(s))

Result = Math.Round(3.1415965,2)
txtSubtotal.Text = Convert.ToString(subtotal)

See p. 119 & 127 for additional Math & Convert class methods.

Yes, for some methods, you must specify the class from which it is called and the syntax is different.
                    Class.Method(arg(s))

Result = Math.Round(3.1415965,2)
txtSubtotal.Text = Convert.ToString(subtotal)

See p. 119 & 127 for additional Math & Convert class methods.

Yes, for some methods, you must specify the class from which it is called and the syntax is different.
                    Class.Method(arg(s))

Result = Math.Round(3.1415965,2)
txtSubtotal.Text = Convert.ToString(subtotal)

See p. 119 & 127 for additional Math & Convert class methods.

Question 14

Preprocessor Directives Includes?

Answer 14

Global Items (variables & Constants)

Question 15

In Visual Basic where does the execution begin?

Answer 15

It depends on how the user interacts with the application.

Question 16

VB Project Files are?

Answer 16

Solution (.sln)
Project (.vbproj) 
Form (.vb)
Plus several others
Application (.exe)