Class KeyTrigger

A Trigger that is triggered by a keyboard event. If the target Key and Modifiers are detected, it fires.

Inheritance
System.Object
DependencyObject
TriggerBase
EventTriggerBase
EventTriggerBase<UIElement>
KeyTrigger
Implements
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: Microsoft.Expression.Interactivity.Input
Assembly: OpenSilver.Expression.Interactions.dll
Syntax
public class KeyTrigger : EventTriggerBase<UIElement>, IDependencyObject, IAttachedObject

Fields

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ActiveOnFocusProperty

Declaration
public static readonly DependencyProperty ActiveOnFocusProperty
Field Value
Type Description
DependencyProperty
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FiredOnProperty

Declaration
public static readonly DependencyProperty FiredOnProperty
Field Value
Type Description
DependencyProperty
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KeyProperty

Declaration
public static readonly DependencyProperty KeyProperty
Field Value
Type Description
DependencyProperty
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ModifiersProperty

Declaration
public static readonly DependencyProperty ModifiersProperty
Field Value
Type Description
DependencyProperty

Properties

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ActiveOnFocus

If true, the Trigger only listens to its trigger Source object, which means that element must have focus for the trigger to fire. If false, the Trigger listens at the root, so any unhandled KeyDown/Up messages will be caught.

Declaration
public bool ActiveOnFocus { get; set; }
Property Value
Type Description
System.Boolean
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FiredOn

Determines whether or not to listen to the KeyDown or KeyUp event.

Declaration
public KeyTriggerFiredOn FiredOn { get; set; }
Property Value
Type Description
KeyTriggerFiredOn
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Key

The key that must be pressed for the trigger to fire.

Declaration
public Key Key { get; set; }
Property Value
Type Description
Key
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Modifiers

The modifiers that must be active for the trigger to fire (the default is no modifiers pressed).

Declaration
public ModifierKeys Modifiers { get; set; }
Property Value
Type Description
ModifierKeys

Methods

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GetEventName()

Declaration
protected override string GetEventName()
Returns
Type Description
System.String
Overrides
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OnDetaching()

Declaration
protected override void OnDetaching()
Overrides
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OnEvent(EventArgs)

Declaration
protected override void OnEvent(EventArgs eventArgs)
Parameters
Type Name Description
System.EventArgs eventArgs
Overrides

Implements

Extension Methods