What is ItemsControl?
What is ItemsControl?
An ItemsControl is a type of Control that can contain multiple items, such as strings, objects, or other elements. The following illustration shows a ListBox control that contains the following different types of items: A string. A DateTime object.
What is WPF item template?
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.
What is Contentcontrol WPF?
Content Control is a base class that provides standardised functionality to WPF Controls. The Content Control class represents controls that can include a single item of content. This content is commonly plain text or a child control. Content Control is a subclass of the Control class in WPF.
What is Item source?
Item Sources identify the relationship between Items and the Vendors who supply them.
What is StackPanel?
StackPanel is a layout panel that arranges child elements into a single line that can be oriented horizontally or vertically. By default, StackPanel stacks items vertically from top to bottom in the order they are declared. You can set the Orientation property to Horizontal to stack items from left to right.
What is difference between ItemTemplate and DataTemplate?
You use the ItemTemplate to specify the visualization of the data objects. If your ItemsControl is bound to a collection object and you do not provide specific display instructions using a DataTemplate, the resulting UI of each item is a string representation of each object in the underlying collection.
What’s the difference between ContentControl and ContentPresenter?
ContentControl is a base class for controls that contain other elements and have a Content -property (for example, Button ). ContentPresenter is used inside control templates to display content.
What is a StackPanel WPF?
The StackPanel in WPF is a simple and useful layout panel. It stacks its child elements below or beside each other, dependening on its orientation. This is very useful to create any kinds of lists. All WPF ItemsControls like ComboBox , ListBox or Menu use a StackPanel as their internal layout panel.
What is DataContext WPF?
The DataContext property is the default source of your bindings, unless you specifically declare another source, like we did in the previous chapter with the ElementName property. It’s defined on the FrameworkElement class, which most UI controls, including the WPF Window, inherits from.
What is ItemsSource in XAML?
ItemsSource can be data bound to any sequence that implements the IEnumerable interface, although the type of collection used does determine the way in which the control is updated when items are added to or removed. When ItemsSource is set, the Items property cannot be used to control the displayed values.
What is the difference between StackPanel and DockPanel?
For example, the order of child elements can affect their size in a DockPanel but not in a StackPanel. This is because StackPanel measures in the direction of stacking at PositiveInfinity, whereas DockPanel measures only the available size. The following example demonstrates this key difference.
How do you use StackPanel?
The default stack direction in a StackPanel is vertical. To control content flow in a StackPanel, use the Orientation property. You can control horizontal alignment by using the HorizontalAlignment property.
What is Template list control?
A template is a set of HTML elements and controls that make up the layout for a particular portion of a control. For example, in the DataList Web server control you can use a combination of HTML elements and controls to create the layout for each row of the list.
What is a control template?
The ControlTemplate allows you to specify the visual structure of a control. The control author can define the default ControlTemplate and the application author can override the ControlTemplate to reconstruct the visual structure of the control.
When should I use ContentPresenter?
You typically use the ContentPresenter in the ControlTemplate of a ContentControl to specify where the content is to be added. Every ContentControl type has a ContentPresenter in its default ControlTemplate.
What is ContentPresenter in xamarin forms?
In this case, a ContentPresenter is all we need – set the BindingContext to your ViewModel and create/bind a DataTemplate. New to Forms 1.3, you can now put resources in the Application-level, so you can more easily share those instances. Here’s the complete code, sans-usings, to implement your own.
What is DataContext in Linq?
The DataContext is the source of all entities mapped over a database connection. It tracks changes that you made to all retrieved entities and maintains an “identity cache” that guarantees that entities retrieved more than one time are represented by using the same object instance.
What is DataContext in MVVM?
DataContext is the head of everything. It makes sure that your View is hooked up with ViewModel. There are 3 ways to hook-up View with ViewModel. Within XAML. Code-Behind.
