Deck 25: GUI With Windows Presentation Foundation

Question 1

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

Answer 1

True

Question 2

A XAML document's root element is a ______

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

Answer 2

A
Window.

Question 3

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

Answer 3

True

Question 4

XAML is similar toNET,a language that allows Internet apps to share data.

Question 5

_________ allows you to describe a WPF GUI without generating any C# code statements.

A) XML
B) Silverlight
C) XAML
D) vector graphics

Question 6

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

Question 7

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

Question 8

XAML is used to define the app's ________.

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

Question 9

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

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

Question 10

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

Question 11

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

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

Question 12

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

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

Question 13

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

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

Question 14

A content control can have text or several child elements.

Question 15

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 16

A Grid is a type of layout container.

Question 17

The StartupUri attribute defines which XAML document loads first.

Question 18

A XAML document has exactly one ______

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

Question 19

XAML is a specialized vocabulary of ___________.

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

Question 20

One problem with using XAML is that GUI design is slightly integrated with programming.

Question 21

Layout of controls refers to the controls' _____.

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

Question 22

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

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

Question 23

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

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

Question 24

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

Question 25

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

Question 26

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 27

Use the ____________ method to programmatically close an app.

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

Question 28

A MouseMove event passes information using a MouseMoveEventArgs object.

Question 29

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

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

Question 30

A MouseLeftButtonDown event passes information using a MouseButtonEventArgs object.

Question 31

If a command is disabled,all methods of executing that command are disabled.

Question 32

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

Question 33

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

Question 34

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

Question 35

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

Question 38

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

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

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

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

Question 41

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

Question 42

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

Question 43

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 44

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

A) const
B) readonly
C) static
D) None of the above.

Question 45

Resources are similar to private members.They're accessible only to the controls they're defined in.

Question 46

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 47

Dependency properties provide built-in change notification.

Question 48

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

Question 49

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

Question 50

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

Question 51

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

Question 52

Colors are represented by three color values and the alpha value,specifying

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

Question 53

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

Question 54

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

Question 55

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

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

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

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

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

Question 58

WPF provides built-in functionality--such as minimizing,maximizing and closing the window--for custom windows.

Question 59

Custom control templates allow you to completely customize a control's appearance.

Question 60

The attribute declares the control modified by a control template.

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