TimelineMarker Class

Definition

Represents metadata associated with a specific point in a media file.

Equivalent WinUI class: Microsoft.UI.Xaml.Media.TimelineMarker.

public ref class TimelineMarker sealed : DependencyObject
/// [Windows.Foundation.Metadata.Activatable(65536, Windows.Foundation.UniversalApiContract)]
/// [Windows.Foundation.Metadata.ContractVersion(Windows.Foundation.UniversalApiContract, 65536)]
/// [Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
/// [Windows.Foundation.Metadata.Static(Windows.UI.Xaml.Media.ITimelineMarkerStatics, 65536, Windows.Foundation.UniversalApiContract)]
/// [Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
/// [Windows.Foundation.Metadata.WebHostHidden]
class TimelineMarker sealed : DependencyObject
/// [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]
/// [Windows.Foundation.Metadata.Activatable(65536, "Windows.Foundation.UniversalApiContract")]
/// [Windows.Foundation.Metadata.Static(Windows.UI.Xaml.Media.ITimelineMarkerStatics, 65536, "Windows.Foundation.UniversalApiContract")]
class TimelineMarker sealed : DependencyObject
[Windows.Foundation.Metadata.Activatable(65536, typeof(Windows.Foundation.UniversalApiContract))]
[Windows.Foundation.Metadata.ContractVersion(typeof(Windows.Foundation.UniversalApiContract), 65536)]
[Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
[Windows.Foundation.Metadata.Static(typeof(Windows.UI.Xaml.Media.ITimelineMarkerStatics), 65536, typeof(Windows.Foundation.UniversalApiContract))]
[Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
[Windows.Foundation.Metadata.WebHostHidden]
public sealed class TimelineMarker : DependencyObject
[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]
[Windows.Foundation.Metadata.Activatable(65536, "Windows.Foundation.UniversalApiContract")]
[Windows.Foundation.Metadata.Static(typeof(Windows.UI.Xaml.Media.ITimelineMarkerStatics), 65536, "Windows.Foundation.UniversalApiContract")]
public sealed class TimelineMarker : DependencyObject
Public NotInheritable Class TimelineMarker
Inherits DependencyObject
Inheritance
TimelineMarker
Attributes

Windows 10 requirements

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

Examples

The following example creates a MediaElement object and responds to its MarkerReached event. Each time a timeline marker is reached, the example displays the timeline marker's Time, Type, and Text values.

<MediaElement Name="Media" Source="video.mp4" MarkerReached="Media_MarkerReached" />
<TextBlock Name="txOutput" />
private void Media_MarkerReached(object sender, TimelineMarkerRoutedEventArgs e)
{
    txOutput.Text =
        string.Format("{0},{1},{2}", e.Marker.Time, e.Marker.Text, e.Marker.Type);
}

Remarks

A timeline marker is metadata associated with a particular point in a media file. These markers are usually created ahead of time and stored in the media file itself. They are typically used to name different scenes in a video or provide scripting cues. By handling the MediaElement object's MarkerReached event or by accessing the MediaElement object's Markers property, you can use timeline markers to trigger actions or enable users to seek to selected positions in the media file.

Constructors

TimelineMarker()

Initializes a new instance of the TimelineMarker class.

Equivalent WinUI constructor: Microsoft.UI.Xaml.Media.TimelineMarker.TimelineMarker.

Properties

Dispatcher

Gets the CoreDispatcher that this object is associated with. The CoreDispatcher represents a facility that can access the DependencyObject on the UI thread even if the code is initiated by a non-UI thread.

Equivalent WinUI property: Microsoft.UI.Xaml.DependencyObject.Dispatcher.

(Inherited from DependencyObject)
Text

Gets or sets the text value of a TimelineMarker.

Equivalent WinUI property: Microsoft.UI.Xaml.Media.TimelineMarker.Text.

TextProperty

Identifies the Text dependency property.

Equivalent WinUI property: Microsoft.UI.Xaml.Media.TimelineMarker.TextProperty.

Time

Gets or sets the time at which a TimelineMarker is reached.

Equivalent WinUI property: Microsoft.UI.Xaml.Media.TimelineMarker.Time.

TimeProperty

Identifies the Time dependency property.

Equivalent WinUI property: Microsoft.UI.Xaml.Media.TimelineMarker.TimeProperty.

Type

Gets or sets the marker type of a TimelineMarker.

Equivalent WinUI property: Microsoft.UI.Xaml.Media.TimelineMarker.Type.

TypeProperty

Identifies the Type dependency property.

Equivalent WinUI property: Microsoft.UI.Xaml.Media.TimelineMarker.TypeProperty.

Methods

ClearValue(DependencyProperty)

Clears the local value of a dependency property.

Equivalent WinUI method: Microsoft.UI.Xaml.DependencyObject.ClearValue.

(Inherited from DependencyObject)
GetAnimationBaseValue(DependencyProperty)

Returns any base value established for a dependency property, which would apply in cases where an animation is not active.

Equivalent WinUI method: Microsoft.UI.Xaml.DependencyObject.GetAnimationBaseValue.

(Inherited from DependencyObject)
GetValue(DependencyProperty)

Returns the current effective value of a dependency property from a DependencyObject.

Equivalent WinUI method: Microsoft.UI.Xaml.DependencyObject.GetValue.

(Inherited from DependencyObject)
ReadLocalValue(DependencyProperty)

Returns the local value of a dependency property, if a local value is set.

Equivalent WinUI method: Microsoft.UI.Xaml.DependencyObject.ReadLocalValue.

(Inherited from DependencyObject)
RegisterPropertyChangedCallback(DependencyProperty, DependencyPropertyChangedCallback)

Registers a notification function for listening to changes to a specific DependencyProperty on this DependencyObject instance.

Equivalent WinUI method: Microsoft.UI.Xaml.DependencyObject.RegisterPropertyChangedCallback.

(Inherited from DependencyObject)
SetValue(DependencyProperty, Object)

Sets the local value of a dependency property on a DependencyObject.

Equivalent WinUI method: Microsoft.UI.Xaml.DependencyObject.SetValue.

(Inherited from DependencyObject)
UnregisterPropertyChangedCallback(DependencyProperty, Int64)

Cancels a change notification that was previously registered by calling RegisterPropertyChangedCallback.

Equivalent WinUI method: Microsoft.UI.Xaml.DependencyObject.UnregisterPropertyChangedCallback.

(Inherited from DependencyObject)

Applies to

See also