WPF

One of the major differences is that .NET framework is required for running WPF browser applications on the client machine. But Silverlight runs using only the plug-in. Another point of difference is that applications made in WPF depend on the OS as .NET Framework only runs on Windows. On the other hand, the Silverlight plug-in can be installed on those OSs also, which are not Windows.

MVVM pattern divides the UI code into 3 basic parts:

★ Model:

It represents a set of classes, which contain data received from databases.

★ View:

It is the code that agrees with the visual representation of the data.

★ ViewModel:

It is the layer that binds View and Model together. It presents this data in a manner, which is easy to understand. It also controls how View interacts with the application.

The namespace system.windows.controls.primitives has 'Popup' and 'Thumb' controls.

The most basic difference is that StaticResource evaluates the resource one time only, but DynamicResource evaluates it every time the resource is required. And due to this reason, DyanamicResource is heavy on the system but it makes pages or windows load faster.

The basic difference is that Window Control presides over Windows Application while Page Control presides over the hosted Browser Applications. Also, Window control may contain Page Control, but the reverse cannot happen.

Yes WPF applications can be created without XAML as using XAML in WPF is a matter of choice.

The most preferred method for this is to call System.Environment.GetCommandLineArgs at any random point in the application.

There are three types of Routed events in WPF. They are:

★ Direct:

This event can only be raised by the element in which it was originated.

★ Tunneling:

This event is first raised by the element in which it was originated and then it gets raised by each consecutive container in the visual tree.

★ Bubbling:

This event is first raised by the uppermost container in the visual tree and then gets raised by each consecutive container lying below the uppermost one, till it reaches the element it where it was originated.

PRISM is a framework for creating complex applications for WPF, Silverlight or Windows Phone. PRISM utilizes MVVM, IC, Command Patterns, DI and Separation of Concerns to get loose coupling.

The namespace required for working in 3D is System.Windows.Media.Medi3D.

The major subsystems are:

★ Windows.Controls.Control

★ Windows.DependancyObject

★ Windows.FrameworkElement

★ Windows.Media.Visuals

★ Object

★ Threading.DispatcherObject

★ Windows.UIElements

They are:

★ Stack Panel

★ Grid Panel

★ Canvas Panel

★ Dock Panel

★ Wrap Panel

An event, which can invoke handlers on more than one listeners present in an element tree, instead of the single object which called the event, is known as a Routed event.

MVC stands for Model-View Controller and.MVVM stands for Model-View ViewModel.

In MVVM, View Model is used instead of a controller. This View Model is present beneath the UI layer. It reveals the command objects and data that the view requires. It acts like a container object from which view gets its actions and data.

Sorting can be done by using a property of the ItemsCollection object. ItemsCollection contains an attribute, SortDescriptions, which holds System.ComponentModel.SortDescription instances. Every SortDescription instance defines how the elements should be sorted and indicates if the sort is descending or ascending.

For instance, this code sorts elements of ContentControl on the basis of their word count property:

myItemsControl.Items.SortDescriptions.Add(new SortDescription("WordCount", ListSortDirection.Descending));

It is used whenever a requirement for creating custom user interface arises. It is a drawing object, which gives instructions for making an object. These instructions include opacity etc. of the drawing. The Visual class also bridges the functionalities of WPF managed classes and the MilCore.dll.

WPF has three types of windows:

★ Normal Window

★ Page Window

★ Navigate Window

Properties that belong to a specific class but can be used for another are called the dependency properties.

It has some important properties like IsSelected and IsHighlighted and also some necessary events like Selected and Unselected. ComboBoxItem is a content control and is thus very useful for adding simple strings to a ComboBox.

The best way to do this is by setting it Name property as it is utilized for automation purposes by default. But if you require to give an ID to an element, other than it's name, then the AutomationProperties.AutomationID property can be set as per need.