21. How can we find resources from ResourceDictionary and apply on controls? ResourceDictionary stored resources as key value pairs and you have a method called FindResource in every control to find the resource from the ResourceDictionary. Every resource is stored as reference type so you have to cast the object …
41. What is Markup Extension in WPF? Markup Extension decides at runtime how to set a property value. StaticResource, DynamicResource are examples of Markup Extension. Markup Extension are always comes in curly braces { }. The first word inside the curly braces is class name of Markup Extension. 42. How …
61. How can you obtain the SynchronizationContext class? You can use the static property SynchronizationContext.Current property from the UI thread. 62. How many methods are available in SynchronizationContext class? There are two methods: 63. What is the difference between Send and Post methods in SynchronizationContext class? Post method is asynchronous method …
81. What is Property-based Animation in WPF? WPF introduces a property-based animation techniques to make animations in WPF easy. It simply modify the value of control property over an interval of time and the target property must be a dependency property. 82. How many types of Animation support by WPF? There …
WPF provides various templates for customization of controls. WPF ListView ItemTemplate is in one of these. ItemTemplate of ListView is useful when we have to change the visual presentation of bound data objects. If your WPF ListView control is bound to collection of objects using ItemsSource proeprty and you have not …
ListView ItemContainerStyle specifies a style that is used by every generated ListViewItem for styling it. You can create a Style inline or in the Resources section and set the ItemContainerStyle property of ListView. You can set ItemContainerStyle as StaticResource or DynamicResource. When to Use? By default you cannot modify style …
WPF ListView ItemTemplateSelector is used for choosing a DataTemplate for each ListViewItem at runtime. You can provide a custom logic to choose which DataTemplate to use in list view item. When to use? You have to show different UIs for each ListViewItem based on some condition. But using the ItemTemplate …
WPF TabControl is used for grouping multiple items that share the same space. TabControl consists of multiple TabItem controls. One one TabItem is visible at one time. A TabItem has two areas. Header is an area for specifying the header of TabItem. All Tab Items headers are always visible. Content is …
WPF is a successor of Windows Forms. Earlier Windows Forms uses the Windows Graphics Device Interface (GDI+) for rendering any graphics, and drawing text. WPF is a new framework for developing rich Windows smart client applications that uses the DirectX technology behind the scene. WPF is resolution-independent because WPF uses …
To build more responsive WPF UI, we have to use multiple threads that can work in the background and update the UI when the work completed. But background threads can’t access the objects created in the STA. Then how can we update the UI when the background threads completed their …