MultiTrigger Class

Reference

Definition

Namespace:: System.Windows

Assembly:: PresentationFramework.dll

Important

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Represents a trigger that applies property values or performs actions when a set of conditions are satisfied.

public ref class MultiTrigger sealed : System::Windows::TriggerBase, System::Windows::Markup::IAddChild

[System.Windows.Markup.ContentProperty("Setters")]
public sealed class MultiTrigger : System.Windows.TriggerBase, System.Windows.Markup.IAddChild

[<System.Windows.Markup.ContentProperty("Setters")>]
type MultiTrigger = class
    inherit TriggerBase
    interface IAddChild

Public NotInheritable Class MultiTrigger
Inherits TriggerBase
Implements IAddChild

Inheritance: Object

DispatcherObject

DependencyObject

TriggerBase
MultiTrigger

Attributes: ContentPropertyAttribute

Implements: IAddChild

Examples

The following example contains two MultiTriggers. The first sets the MinWidth property value when the HasItems property is false and the Width property is Auto. The second one is similar but is for the MinHeight property.

<Style.Triggers>
  <Trigger Property="IsEnabled" Value="false">
    <Setter Property="Background" Value="#EEEEEE" />
  </Trigger>

  <MultiTrigger>
    <MultiTrigger.Conditions>
      <Condition Property="HasItems" Value="false" />
      <Condition Property="Width" Value="Auto" />
    </MultiTrigger.Conditions>
    <Setter Property="MinWidth" Value="120"/>
  </MultiTrigger>

  <MultiTrigger>
    <MultiTrigger.Conditions>
      <Condition Property="HasItems" Value="false" />
      <Condition Property="Height" Value="Auto" />
    </MultiTrigger.Conditions>
    <Setter Property="MinHeight" Value="95"/>
  </MultiTrigger>
</Style.Triggers>

Remarks

MultiTrigger enables you to set property values or start actions based on a collection of Conditions. A condition is met when the value of the property (specified by the Property property of the Condition class) of the element matches the specified Value. The comparison is a reference equality check. You can then use setters or the EnterActions and ExitActions properties to apply changes or start actions when all of the conditions are met.

The Setters property of a MultiTrigger object can only consist of Setter objects. Adding a Setter child to a MultiTrigger object implicitly adds it to the SetterBaseCollection for the MultiTrigger object. EventSetter objects are not supported; only Style.Setters supports EventSetter objects.

Constructors

MultiTrigger()

Initializes a new instance of the MultiTrigger class.

Properties

Conditions	Gets a collection of Condition objects. Changes to property values are applied when all of the conditions in the collection are met.
DependencyObjectType	Gets the DependencyObjectType that wraps the CLR type of this instance. (Inherited from DependencyObject)
Dispatcher	Gets the Dispatcher this DispatcherObject is associated with. (Inherited from DispatcherObject)
EnterActions	Gets a collection of TriggerAction objects to apply when the trigger object becomes active. This property does not apply to the EventTrigger class. (Inherited from TriggerBase)
ExitActions	Gets a collection of TriggerAction objects to apply when the trigger object becomes inactive. This property does not apply to the EventTrigger class. (Inherited from TriggerBase)
IsSealed	Gets a value that indicates whether this instance is currently sealed (read-only). (Inherited from DependencyObject)
Setters	Gets a collection of Setter objects, which describe the property values to apply when all of the conditions of the MultiTrigger are met.

Methods

CheckAccess()	Determines whether the calling thread has access to this DispatcherObject. (Inherited from DispatcherObject)
ClearValue(DependencyProperty)	Clears the local value of a property. The property to be cleared is specified by a DependencyProperty identifier. (Inherited from DependencyObject)
ClearValue(DependencyPropertyKey)	Clears the local value of a read-only property. The property to be cleared is specified by a DependencyPropertyKey. (Inherited from DependencyObject)
CoerceValue(DependencyProperty)	Coerces the value of the specified dependency property. This is accomplished by invoking any CoerceValueCallback function specified in property metadata for the dependency property as it exists on the calling DependencyObject. (Inherited from DependencyObject)
Equals(Object)	Determines whether a provided DependencyObject is equivalent to the current DependencyObject. (Inherited from DependencyObject)
GetHashCode()	Gets a hash code for this DependencyObject. (Inherited from DependencyObject)
GetLocalValueEnumerator()	Creates a specialized enumerator for determining which dependency properties have locally set values on this DependencyObject. (Inherited from DependencyObject)
GetType()	Gets the Type of the current instance. (Inherited from Object)
GetValue(DependencyProperty)	Returns the current effective value of a dependency property on this instance of a DependencyObject. (Inherited from DependencyObject)
InvalidateProperty(DependencyProperty)	Re-evaluates the effective value for the specified dependency property. (Inherited from DependencyObject)
MemberwiseClone()	Creates a shallow copy of the current Object. (Inherited from Object)
OnPropertyChanged(DependencyPropertyChangedEventArgs)	Invoked whenever the effective value of any dependency property on this DependencyObject has been updated. The specific dependency property that changed is reported in the event data. (Inherited from DependencyObject)
ReadLocalValue(DependencyProperty)	Returns the local value of a dependency property, if it exists. (Inherited from DependencyObject)
SetCurrentValue(DependencyProperty, Object)	Sets the value of a dependency property without changing its value source. (Inherited from DependencyObject)
SetValue(DependencyProperty, Object)	Sets the local value of a dependency property, specified by its dependency property identifier. (Inherited from DependencyObject)
SetValue(DependencyPropertyKey, Object)	Sets the local value of a read-only dependency property, specified by the DependencyPropertyKey identifier of the dependency property. (Inherited from DependencyObject)
ShouldSerializeProperty(DependencyProperty)	Returns a value that indicates whether serialization processes should serialize the value for the provided dependency property. (Inherited from DependencyObject)
ToString()	Returns a string that represents the current object. (Inherited from Object)
VerifyAccess()	Enforces that the calling thread has access to this DispatcherObject. (Inherited from DispatcherObject)

Explicit Interface Implementations

IAddChild.AddChild(Object)	Adds a child object.
IAddChild.AddText(String)	Adds the text content of a node to the object.

Applies to

Megosztás a következőn keresztül: