Task DelayAsync( 
   TimeSpan delay,
   CancellationToken cancellationToken
)

Parameters

delay

The time span to wait before completing the returned task

cancellationToken

Return Value

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

IClock Interface
IClock Members
System.Threading.Tasks.Task.Delay(System.TimeSpan)