Class Selector

Represents a control that allows a user to select an item from a collection of items.

Inheritance
System.Object
DependencyObject
UIElement
FrameworkElement
Control
ItemsControl
Selector
ComboBox
ListBox
Inherited Members
System.Object.Equals(System.Object)
System.Object.Equals(System.Object, System.Object)
System.Object.GetHashCode()
System.Object.GetType()
System.Object.MemberwiseClone()
System.Object.ReferenceEquals(System.Object, System.Object)
System.Object.ToString()
Namespace: System.Windows.Controls.Primitives
Assembly: OpenSilver.dll
Syntax
public class Selector : ItemsControl, IControl, IFrameworkElement, IUIElement, IDependencyObject

Constructors

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Selector()

Initializes a new instance of the Selector class.

Declaration
public Selector()

Fields

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IsSynchronizedWithCurrentItemProperty

Identifies the IsSynchronizedWithCurrentItem dependency property.

Declaration
public static readonly DependencyProperty IsSynchronizedWithCurrentItemProperty
Field Value
Type Description
DependencyProperty
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SelectedIndexProperty

Identifies the SelectedIndex dependency property.

Declaration
public static readonly DependencyProperty SelectedIndexProperty
Field Value
Type Description
DependencyProperty
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SelectedItemProperty

Identifies the SelectedItem dependency property.

Declaration
public static readonly DependencyProperty SelectedItemProperty
Field Value
Type Description
DependencyProperty
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SelectedValuePathProperty

Identifies the SelectedValuePath dependency property.

Declaration
public static readonly DependencyProperty SelectedValuePathProperty
Field Value
Type Description
DependencyProperty
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SelectedValueProperty

Identifies the SelectedValue dependency property.

Declaration
public static readonly DependencyProperty SelectedValueProperty
Field Value
Type Description
DependencyProperty

Properties

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HasItems

Gets whether the Selector contains items.

Declaration
protected bool HasItems { get; }
Property Value
Type Description
System.Boolean
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IsSynchronizedWithCurrentItem

Gets or sets a value that indicates whether the Selector should keep the SelectedItem synchronized with the current item in the Items property.

Declaration
public bool? IsSynchronizedWithCurrentItem { get; set; }
Property Value
Type Description
System.Nullable<System.Boolean>

true if the SelectedItem is always synchronized with the current item; false if the SelectedItem is never synchronized with the current item; null if the SelectedItem is synchronized with the current item only if the Selector uses a ICollectionView. The default is null.
Exceptions
Type Condition
System.ArgumentException

IsSynchronizedWithCurrentItem is set to true.
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SelectedIndex

Gets or sets the index of the selected item.

Declaration
public int SelectedIndex { get; set; }
Property Value
Type Description
System.Int32
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SelectedItem

Gets or sets the selected item.

Declaration
public object SelectedItem { get; set; }
Property Value
Type Description
System.Object
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SelectedValue

Gets or sets the value of the selected item, obtained by using the SelectedValuePath.

Declaration
public object SelectedValue { get; set; }
Property Value
Type Description
System.Object
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SelectedValuePath

Gets or sets the property path that is used to get the SelectedValue property of the SelectedItem property.

Declaration
public string SelectedValuePath { get; set; }
Property Value
Type Description
System.String

Methods

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ClearContainerForItemOverride(DependencyObject, Object)

Removes any bindings and templates applied to the item container for the specified content.

Declaration
protected override void ClearContainerForItemOverride(DependencyObject element, object item)
Parameters
Type Name Description
DependencyObject element

The combo box item used to display the specified content.
System.Object item

The item content.
Overrides
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GetIsSelectionActive(DependencyObject)

Gets a value that indicates whether the specified Selector has the focus.

Declaration
public static bool GetIsSelectionActive(DependencyObject element)
Parameters
Type Name Description
DependencyObject element

The Selector to evaluate.
Returns
Type Description
System.Boolean

true to indicate that the Selector has the focus; otherwise, false.
Exceptions
Type Condition
System.ArgumentNullException

element is null.
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OnApplyTemplate()

Builds the visual tree for the Selector control when a new template is applied.

Declaration
public override void OnApplyTemplate()
Overrides
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OnItemsChanged(NotifyCollectionChangedEventArgs)

Declaration
protected override void OnItemsChanged(NotifyCollectionChangedEventArgs e)
Parameters
Type Name Description
System.Collections.Specialized.NotifyCollectionChangedEventArgs e
Overrides
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OnItemsSourceChanged(IEnumerable, IEnumerable)

Declaration
protected override void OnItemsSourceChanged(IEnumerable oldValue, IEnumerable newValue)
Parameters
Type Name Description
System.Collections.IEnumerable oldValue
System.Collections.IEnumerable newValue
Overrides
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OnSelectionChanged(SelectionChangedEventArgs)

Raises the SelectionChanged event

Declaration
protected virtual void OnSelectionChanged(SelectionChangedEventArgs e)
Parameters
Type Name Description
SelectionChangedEventArgs e

The arguments for the event.
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PrepareContainerForItemOverride(DependencyObject, Object)

Prepares the specified element to display the specified item.

Declaration
protected override void PrepareContainerForItemOverride(DependencyObject element, object item)
Parameters
Type Name Description
DependencyObject element

The element used to display the specified item.
System.Object item

The item to display
Overrides

Events

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SelectionChanged

Occurs when the selection is changed.

Declaration
public event SelectionChangedEventHandler SelectionChanged
Event Type
Type Description
SelectionChangedEventHandler

Extension Methods