timeline_begintime.md

-api-id	-api-type
P:Windows.UI.Xaml.Media.Animation.Timeline.BeginTime	winrt property

Windows.UI.Xaml.Media.Animation.Timeline.BeginTime

-description

Gets or sets the time at which this Timeline should begin.

-xaml-syntax

<timeline BeginTime="keyTimeString"/>

-xaml-values

keyTimeString

keyTimeStringA string in the form [days.]hours:minutes:seconds[.fractionalSeconds]. For more information, see KeyTime.

## -property-value The start time of the time line. The default value is zero. If you are programming using C# or Visual Basic, the parameter type of this parameter is projected as **System.TimeSpan?**(a nullable [System.TimeSpan](/dotnet/api/system.timespan?view=dotnet-uwp-10.0&preserve-view=true)).

-remarks

-examples

-see-also