Chapter 15

Question 1

Can we write procedural code inside XAML file

Answer 1

Yes
e.g.
<code></code>

</code>

Question 2

What is CDATA in XAML code

Answer 2

It tells that the code inside CDATA will not follow normal XAML rules.

Question 3

How we can save XAML save

Answer 3

XAML writer

Question 4

Can we create objects through non default constructors

Answer 4

Yes

Question 5

What x:AsyncRecords do

Answer 5

Controls the size of asynchronous XAML-loading chunks

Question 6

What x:Class do

Answer 6

Creates Class

Question 7

What x:ClassModifier do

Answer 7

Set the visibility of class, which is by default private.

Question 8

What x:ConnectionId do

Answer 8

It is not for public use. It is for internal implementation.

Question 9

What x:FieldModifier do

Answer 9

It checks field visibility.

Question 10

What x:Key do

Answer 10

It add elements in dictionary.

Question 11

What x:name do

Answer 11

It uses for naming elements.

Question 12

What x:shared = false do

Answer 12

It means same resource instance not to be shared

Question 13

What x:SubClass do

Answer 13

It uses only when partial class is not supported. It works like partial class do

Question 14

What x:Synchoronous mode do

Answer 14

It load xaml in sync mode

Question 15

What x:TypeArguments do

Answer 15

Use only with root with x:Class

Question 16

What x:Uid do

Answer 16

Represents system URI. It used for internationalization and localization

Question 17

What x:XData do

Answer 17

It uses on such data on which XML rules does not apply

Question 18

What x:array do

Answer 18

It defines type of array

Question 19

What x:NULL do

Answer 19

it is mark up extension that returns NULL

Question 20

What x:reference do

Answer 20

It gets reference of named element

Question 21

What x:static do

Answer 21

It set static property of any field

Question 22

What x:Type do

Answer 22

It is just like type of operator

Question 23

Is it true whatever we do in XAML can also be done in C#

Answer 23

Yes

Question 24

What is WPF

Answer 24

Windows Presentation Foundation (WPF) is a next-generation presentation system for building Windows client applications with visually stunning user experiences.

Question 25

What is dispatcher object

Answer 25

It supports such object which have message loop or event loop. It assumes that it will run on single thread.

Question 26

What is dependency object

Answer 26

Any object which want to have dependency property must be derived from dependency object. It is because dependency object supports dependency property.

Question 27

What freezable class do

Answer 27

It takes object in a state where object property cannot be changed. And due to this, It is thread save. It can be used in threads.

Question 28

What is visual class

Answer 28

It is directly derived from dependency object. It supports screen rendering.

Question 29

What is contentelement class

Answer 29

It is derived from dependency object. It is just like UI elements but for document related elements.

Question 30

What is framework element class

Answer 30

It is for support for UIelements e.g. styles, data binding

Question 31

What is FrameworkContentElement class

Answer 31

It is just like framework element but for non UI element

Question 32

What is control class

Answer 32

It is for restyling

Question 33

What is logical tree

Answer 33

A logical tree built on hierarchy of XAML elements. It is called logical because it misses many visual elements.

Question 34

What is visual tree

Answer 34

Its a mapping of hierarchy of XAML elements in a tree form. All elements are visually present in it.

Question 35

Should our code depend upon visual tree

Answer 35

No

Question 36

How can we print logical and visual tree

Answer 36

Through logical tree helper class and visual tree helper class