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After moving box,I can't delete arrow.
Feb 4th, 2006 at 1:41am
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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
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Re: After moving box,I can't delete arrow.
Reply #1 - Feb 4th, 2006 at 8:54am
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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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