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EventTriggerBase Generic Class

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Represents a trigger that can listen to an element other than its AssociatedObject.

Namespace: System.Windows.Interactivity
Assembly: System.Windows.Interactivity (in system.windows.interactivity.dll)

Syntax

'Declaration
Public MustInherit Class EventTriggerBase(Of T)
    Inherits EventTriggerBase

'Usage
Dim instance As EventTriggerBase(Of T)

public abstract class EventTriggerBase<T> : EventTriggerBase

generic<typename T>
public ref class EventTriggerBase abstract : public EventTriggerBase

Remarks

EventTriggerBase extends TriggerBase to add knowledge of another object than the one it is attached to. This allows a user to attach a Trigger/Action pair to one element and invoke the Action in response to a change in another object somewhere else. Override OnSourceChanged to hook or unhook handlers on the source element, and OnAttached/OnDetaching for the associated element. The type of the Source element can be constrained by the generic type parameter. If you need control over the type of the AssociatedObject, set a TypeConstraintAttribute on your derived type.

Inheritance Hierarchy

System.Object
   System.Windows.Threading.DispatcherObject
     System.Windows.DependencyObject
       System.Windows.Freezable
         System.Windows.Media.Animation.Animatable
           System.Windows.Interactivity.TriggerBase
             System.Windows.Interactivity.EventTriggerBase
              System.Windows.Interactivity.EventTriggerBase
                 Microsoft.Expression.Interactivity.Input.KeyTrigger
                 System.Windows.Interactivity.EventTrigger

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

See Also

Reference

EventTriggerBase Members
System.Windows.Interactivity Namespace