[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]
The length of the track.
Assembly: Microsoft.Phone (in Microsoft.Phone.dll)
This value is calculated by the system.
This property is zero if the track is not ready, or is in the process of preparing for playback. This can occur immediately after switching tracks, even after the foreground application has received the PlayStateChanged event.