public float Opacity { get; set; }

The opacity multiplier is clamped to the [0, 1] range when set. Setting a new value overwrites any existing opacity override for that transition. On a transition between two states, this property fades the transition wire and leaves the arrow solid. On a self transition, this property fades the transition arrow's border, leaving the arrow head solid. Getting or setting this property has no effect, and getting it returns , when the TransitionReference has no associated TransitionReference.Context, such as when it is . Throws ObjectDisposedException when you access this property after you call Context.Dispose on the context.

Reduce the opacity of a transition to draw it semi-transparently in the state machine canvas, for example to de-emphasize a transition that was not taken.

TransitionReference transitionRef = context.GetTransitionReference(transitionID);transitionRef.Opacity = 0.5f;