After moving box,I can't delete arrow. - Diagramming Components

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After moving box,I can't delete arrow. (Read 1953 times)

Link Guest	After moving box,I can't delete arrow. Feb 4^th, 2006 at 1:41am	Print Post
	after moving boxes, the arrows look very mess. So I wanta delete those arrows to repaint them. 1.box.move() 2. foreach(Arrow a in fc.Arrows) { fc.DeleteObject(a); } but there is a System.InvalidOperationException happend "foreach(Arrow a in fc.Arrows)". I don't know how to resolve it.


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Stoyo God Member Offline MindFusion support Posts: 13230 Joined: Jul 20^th, 2005	Re: After moving box,I can't delete arrow. Reply #1 - Feb 4^th, 2006 at 8:54am	Print Post
	In .NET you cannot remove an object from a collection while the collection is being enumerated with 'foreach'. DeleteObject removes the arrow from the Arrows collection at some point. Instead of deleting the box' arrows, why not use arrows of type Dynamic so they update their position? Or after moving the box, call "a.Route()" for the affected arrows ? Calling Route would create better results with 'cascading' arrows; for 'polyline' arrows try the Dynamic property.


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