Storyboard.SetSpeedRatio Method (Double)
Assembly: PresentationFramework (in PresentationFramework.dll)
A finite value greater than zero that is the new interactive speed ratio of the storyboard. This value is multiplied against the storyboard's SpeedRatio value to determine the storyboard's effective speed. This value does not overwrite the storyboard's SpeedRatio property. For example, calling this method and specifying an interactive speed ratio of 3 on a storyboard with a SpeedRatio of 0.5 gives the storyboard an effective speed of 1.5.
Available since 3.0