TriggerCollection Class

Definition

Represents a collection of EventTrigger objects.

Equivalent WinUI class: Microsoft.UI.Xaml.TriggerCollection.

public ref class TriggerCollection sealed : IIterable<TriggerBase ^>, IVector<TriggerBase ^>
/// [Windows.Foundation.Metadata.ContractVersion(Windows.Foundation.UniversalApiContract, 65536)]
/// [Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
/// [Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
/// [Windows.Foundation.Metadata.WebHostHidden]
class TriggerCollection final : IIterable<TriggerBase>, IVector<TriggerBase>
/// [Windows.Foundation.Metadata.ContractVersion(Windows.Foundation.UniversalApiContract, 65536)]
/// [Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
/// [Windows.Foundation.Metadata.WebHostHidden]
class TriggerCollection final : IIterable<TriggerBase>, IVector<TriggerBase>
[Windows.Foundation.Metadata.ContractVersion(typeof(Windows.Foundation.UniversalApiContract), 65536)]
[Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
[Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
[Windows.Foundation.Metadata.WebHostHidden]
public sealed class TriggerCollection : IEnumerable<TriggerBase>, IList<TriggerBase>
[Windows.Foundation.Metadata.ContractVersion(typeof(Windows.Foundation.UniversalApiContract), 65536)]
[Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
[Windows.Foundation.Metadata.WebHostHidden]
public sealed class TriggerCollection : IEnumerable<TriggerBase>, IList<TriggerBase>
Public NotInheritable Class TriggerCollection
Implements IEnumerable(Of TriggerBase), IList(Of TriggerBase)
<object>
  <object.Triggers>
    oneOrMoreEventTriggers
  </object.Triggers>
</object>
Inheritance
TriggerCollection
Attributes
Implements

Windows 10 requirements

Device family
Windows 10 (introduced in 10.0.10240.0)
API contract
Windows.Foundation.UniversalApiContract (introduced in v1.0)

Remarks

Enumerating the collection in C# or Microsoft Visual Basic

A TriggerCollection is enumerable, so you can use language-specific syntax such as foreach in C# to enumerate the items in the collection. The compiler does the type-casting for you and you won't need to cast to IEnumerable<EventTrigger> explicitly. If you do need to cast explicitly, for example if you want to call GetEnumerator, cast to IEnumerable with an EventTrigger constraint.

Properties

Size

Gets the size (count) of the collection.

Equivalent WinUI property: Microsoft.UI.Xaml.TriggerCollection.Size.

Methods

Append(TriggerBase)

Adds a new item to the collection.

Equivalent WinUI method: Microsoft.UI.Xaml.TriggerCollection.Append.

Clear()

Removes all items from the collection.

Equivalent WinUI method: Microsoft.UI.Xaml.TriggerCollection.Clear.

First()

Returns the iterator for iteration over the items in the collection.

Equivalent WinUI method: Microsoft.UI.Xaml.TriggerCollection.First.

GetAt(UInt32)

Returns the item located at the specified index.

Equivalent WinUI method: Microsoft.UI.Xaml.TriggerCollection.GetAt.

GetMany(UInt32, TriggerBase[])

Retrieves multiple elements in a single pass through the iterator.

Equivalent WinUI method: Microsoft.UI.Xaml.TriggerCollection.GetMany.

GetView()

Gets an immutable view into the collection.

Equivalent WinUI method: Microsoft.UI.Xaml.TriggerCollection.GetView.

IndexOf(TriggerBase, UInt32)

Retrieves the index of the specified item.

Equivalent WinUI method: Microsoft.UI.Xaml.TriggerCollection.IndexOf.

InsertAt(UInt32, TriggerBase)

Inserts the specified item at the specified index.

Equivalent WinUI method: Microsoft.UI.Xaml.TriggerCollection.InsertAt.

RemoveAt(UInt32)

Removes the item at the specified index.

Equivalent WinUI method: Microsoft.UI.Xaml.TriggerCollection.RemoveAt.

RemoveAtEnd()

Removes the last item in the collection.

Equivalent WinUI method: Microsoft.UI.Xaml.TriggerCollection.RemoveAtEnd.

ReplaceAll(TriggerBase[])

Initially clears the collection, then inserts the provided array as new items.

Equivalent WinUI method: Microsoft.UI.Xaml.TriggerCollection.ReplaceAll.

SetAt(UInt32, TriggerBase)

Sets the value at the specified index to the TriggerBase value specified.

Equivalent WinUI method: Microsoft.UI.Xaml.TriggerCollection.SetAt.

Applies to

See also