Deck 27: Visual Basic 2012 How to Program

Question 1

A XAML document has exactly one ______ .

A)root element
B)start tag
C)end tag
D)child element

Answer 1

A

Question 2

WPF uses _________ graphics,which allows graphics to scale without losing quality.

A)bitmap
B)vector
C)raster-based
D)jpeg

Answer 2

B

Question 3

_________,a subset of WPF,is used to create Rich Internet Applications.

A)Moonlight
B)XML
C)Mono
D)Silverlight

Answer 3

D

Question 4

Every XAML document must define the presentation XAML namespace and the standard XAML namespace.

Question 5

Layout of controls refers to the controls' _____.

A)size
B)event handlers
C)position
D)a and b
E)a and c

Question 6

A StackPanel has a vertical or horizontal flow,set by its _____ attribute.

A)Order
B)Orientation
C)FlowType
D)Direction

Question 7

XAML is used to describe the ___________ of a WPF application.

A)classes
B)program logic
C)code-behind file
D)GUI

Question 8

WPF GUIs can be created by dragging predefined controls from the Toolbox onto the design surface.

Question 9

XAML is used to define the application's _________.

A)program logic
B)graphical user interface
C)code behind classes
D)All of the above.

Question 10

A XAML document's root element is a ______ .

A)Window
B)Form
C)Grid
D)UserControl

Question 11

XAML is a specialized vocabulary of ___________.

A)HTML
B)XML
C)ASP.NET
D)WPF

Question 12

Using XAML gives WPF the benefit of raster-based graphics.

Question 13

The StartupUri attribute defines which XAML document loads first.

Question 14

A content control can have text or several child elements.

Question 15

XML elements can be nested,creating parent elements and child elements.

Question 16

A key benefit of WPF is that it provides a single platform to handle GUI,images,animation 2D and 3d graphics,audio and video.

Question 17

A Grid is a type of layout container.

Question 18

A major benefit of using XAML is that GUI design can be done separately from programming.

Question 19

The application's primary code-behind class has filename _______.

A)Application.xaml
B)Application.xaml.vb
C)Window1.xaml
D)Window1.xaml.vb

Question 20

WPF graphics are resolution-independent,meaning that they are designed to look similar on screens of different sizes.

Question 21

WPF styles require you to explicitly set the individual properties of each control.

Question 22

A WPF Grid control allows child elements to be positioned using explicit coordinates.

Question 23

Use the ____________ method to programmatically close an application.

A)Application.Shutdown
B)Application.Exit
C)Application.Current.Exit
D)Application.Current.Shutdown

Question 24

The CanExecute event for a command allows you to implement logic that determines whether a command should be enabled or disabled.

Question 25

A MouseEventArgs object's GetPosition event always returns a position relative to the top left of the WPF window.

Question 26

A layout container's ____ property stores a list of its child elements.

A)Children
B)ElementList
C)FlowItems
D)List

Question 27

A bubbling event travels down the container hierarchy,and a tunneling event travels up the container hierarchy.

Question 28

It's a good practice to use ranges for the size and relative location for the position of WPF controls.

Question 29

A shape can be given an absolute position in a Canvas using the Canvas's methods _____ and _____.

A)SetX,SetY
B)SetLeft,SetTop
C)PositionX,PositionY
D)PadLeft,PadTop

Question 30

Flow-based layouts allow the GUI to display correctly when the user resizes the window.

Question 31

WPF events which behave like Windows Forms events are called ______.

A)expandable events
B)tunneling events
C)bubbling events
D)direct events

Question 32

A MouseLeftButtonDown event passes information using a MouseButtonEventArgs object.

Question 33

How does the size setting Auto size the control?

A)It uses the maximum possible size to fill the area
B)It uses a relative size
C)It uses the smallest possible size to fit its contents
D)a and b

Question 34

A control's Background property is a customizable ________ object.

A)Color
B)BackColor
C)GUIcolor
D)None of the above

Question 35

The ________ property determines the amount of space around a control's edges.

A)Padding
B)Margin
C)Space
D)Edges

Question 36

Events which can travel up or down the container hierarchy are called ______.

A)expandable events
B)sourced events
C)bubble events
D)routed events

Question 37

The _______ property of an event stores a reference to the control that triggered the event.

A)Target
B)Source
C)SourceControl
D)EventTarget

Question 38

A routed event is ignored after its Handled property is set to True.

Question 39

WPF provides the ability to create ____________ -- actions or tasks that may be triggered by many different user interactions.

A)multi-events
B)shared events
C)commands
D)b or c

Question 40

A MouseMove event passes information using a MouseMoveEventArgs object.

Question 41

A WPF style is a set of that can be reused for any number of controls.

A)property-value definitions
B)event-handler definitions
C)background images
D)a and b.

Question 42

The attribute declares the control modified by a control template.

A)Type
B)TargetType
C)TargetControl
D)Control

Question 43

The ItemsSource property of a ListView must refer to the name of a DataTemplate element.

Question 44

Static resources and dynamic resources differ because static resources are set at initialization time and dynamic resources can be modified by the application.

Question 45

Keyword is used for constants whose values cannot be determined at compile time.

A)Const
B)ReadOnly
C)Shared
D)None of the above.

Question 46

WPF controls are "lookless," meaning that their appearance can be set by any control template.

Question 47

A routed command declared in the XAML changes a control's appearance when that control enters a certain state.

Question 48

A CollectionViewSource provides multiple "views" of the same data.

Question 49

Use the property to bind data to information in another XAML element,and the property to bind to a specific property of that element.

A)Binding,Source
B)Target,Property
C)ElementName,Path
D)Target,Source

Question 50

Colors are represented by three color values and the alpha value.The alpha value specifies .

A)brightness
B)opacity
C)a blending constant
D)None of the above.

Question 51

Setting the property to None removes the standard window frame containing the title and buttons to minimize,maximize and close the application.

A)Frame
B)Title
C)WindowStyle
D)WindowFrame

Question 52

Data members declared as ReadOnly must be initialized in their declaration.

Question 53

Dependency properties provide built-in change notification.

Question 54

WPF provides built-in functionality for custom windows.

Question 55

In addition to GUI appearance,styles can also contain event handlers.

Question 56

Which of the following is not a data provider for WPF data binding?

A)ObjectDataProvider
B)SqlDataProvider
C)XmlDataProvider
D)None of the above.

Question 57

Custom control templates give you complete control of a control's appearance.

Question 58

Resources are similar to Private members.They are accessible only to the controls they are defined in.