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Name the classes that derive from the abstract System.Windows.Shapes.Shape class in WPF?

Posted By :Syed Shakeer Hussain     Posted Date :October 26, 2010    Points :10   Category :WPF 
1) Rectangle
2) Ellipse
3) Line
4) Polyline
5) Polygon
6) Path

You can also find related Interview Question to Name the classes that derive from the abstract System.Windows.Shapes.Shape class in WPF?  below: 

Consider the following two classes:

public class Example1
public static int num;

public class Example2
public static void main(String[] args)

Select the correct option regarding the preceding classes.?

1, The Example2 class will execute without any output.
2, The Example2 class will execute with the following output:5

3, The Example2 class will not compile as it does not calls the constructor of the Example 1 class.
4, The Example2 class will not execute as it does not calls the constructor of the Example 1 class.

Answer : 2 (More...)

What is the difference between interface and abstract class ?

a class may inherit several interfaces, a class may inherit only one abstract class (More...)

What are Abstract base classes?

Abstact Class is nothing but a true virtual class..
This class cannot be instantiated instead it has to be inherited.
The method in abstract class are virtual and hence they can be overriden in the child class. (More...)

What is difference between abstract class and an interface?

An Abstract class is a class with some common/certain implementations and defines abstraction for other services which are implemented in its concrete sub classes, whereas interface only have method declaration with zero implementations. An abstract class and Interface both have method only but not have body of method. The difference between Abstract class and An Interface is that if u call Abstract class then u have to call all method of that particular Abstract class but if u call an Interface then it is not necessary that u call all method of that particular interface. An abstract class is a special kind of class that cannot be instantiated. So the question is why we need a class that cannot be instantiated? An abstract class is only to be sub-classed (inherited from). In other words, it only allows other classes to inherit from it but cannot be instantiated. The advantage is that it enforces certain hierarchies for all the subclasses. In simple words, it is a kind of contract that forces all the subclasses to carry on the same hierarchies or standards.

An interface is not a class. It is an entity that is defined by the word Interface. An interface has no implementation; it only has the signature or in other words, just the definition of the methods without the body. As one of the similarities to Abstract class, it is a contract that is used to define hierarchies for all subclasses or it defines specific set of methods and their arguments. The main difference between them is that a class can implement more than one interface but can only inherit from one abstract class. Since C# doesn't support multiple inheritance, interfaces are used to implement multiple inheritance.

Shashi Ray (More...)

How can I look up a parent class method or property of any System-level object?

Use the Class View window, accessed from the standard toolbar by clicking View | Class View. (More...)

When do you have to declare a class as abstract?

1. When the class itself is inherited from an abstract class, but not all base abstract methods have been overridden.
2. When at least one of the methods in the class is abstract. (More...)

Name the classes that are contained in System.Data NameSpace?

Constraint (More...)

I can't seem to find System.Windows.Forms.Integration, where do I find it?

The System.Windows.Forms.Integration namespace is defined in WindowsFormsIntegration.dll which currently ships in the WinFX SDK, not in the standard redist. Therefore, the file will be found in "\Program Files\Reference Assemblies\ Microsoft\Avalon\v2.0.50215?. (More...)

What's the use of System.Windows.Controls.ContentControl?

It holds a single piece of content. This can start from a simple label and go down to a unit level of string in a layout panel using shapes.
This is the base class for all controls that show a collection of items, such as the ListBox and TreeView. (More...)

What is the use of System.Windows.Media namespace?

It is the root namespace to several other media related namespaces. It provides different types to work with animations, 3D rendering, text rendering and other multimedia services. (More...)

What is the use of "System.Windows.Markup" namespace in WPF?

The System.Windows.Markup namespace provides some helper classes for XAML code. (More...)

What is the use of System.Windows.Navigation namespace in WPF?

System.Windows.Navigation namespace contains different classes for navigation between windows. (More...)

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