StageStateChangedOldStateDuration Property

The amount of time spent in the previous state. Note: There may be certain circumstances where it is impossible to provide this duration (as in the case of an unexpected power faillure or other extreme events). In this case it is acceptable to report a duration of "null", which will be interpreted as "unknown" by the receiver of this event.

public TimeSpan? OldStateDuration { get; set; }

Public Property OldStateDuration As TimeSpan?
	Get
	Set