public float WidthOverride { get; set; }

Setting the value to 0 removes the width override on the transition. Setting a new value overwrites any existing width override for that transition. On a state-to-state transition, this property sets the width of the transition's wire and of the border of its arrow. On a self transition, this property sets the width of the transition arrow's border. 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.

Override the line width of a transition so it appears thicker than the default thickness.

TransitionReference transitionRef = context.GetTransitionReference(transitionID);transitionRef.WidthOverride = 4f;