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deanhully
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efficiently creating diagramlinks
Jan 14th, 2009 at 12:49am
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Stoyo,

I am creating diagrams with many nodes and diagramLinks. By far the slowest part of the process is the constructor for the diagramLink objects. I am using the ctor:
new diagramlink(diagram, origin, dest)
it is the fastest method I have found. Any suggestions for speeding up this?

Thanks,

Dean
  
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Stoyo
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Re: efficiently creating diagramlinks
Reply #1 - Jan 14th, 2009 at 5:46am
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If you are using link auto-routing, you should create the links after all nodes have been added. Otherwise, each added node might lead to the re-routing of several links.

I hope that helps,
Stoyan
  
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deanhully
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Re: efficiently creating diagramlinks
Reply #2 - Jan 14th, 2009 at 2:02pm
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No, not using auto routing. It's a pretty simple diagram just lots of nodes (~1k) and links (~20k).

At this point I am creating all the nodes first and then adding the diagram links.

Dean
  
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Stoyo
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Re: efficiently creating diagramlinks
Reply #3 - Jan 14th, 2009 at 2:10pm
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Oh. Try that with Diagram.ValidityChecks = false.
  
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deanhully
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Re: efficiently creating diagramlinks
Reply #4 - Jan 14th, 2009 at 2:16pm
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37% faster - thanks, Stoyo!

Any other magic up your sleeves?

Dean
  
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Stoyo
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Re: efficiently creating diagramlinks
Reply #5 - Jan 14th, 2009 at 2:32pm
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Smiley Another thing you might try: create a Diagram object without displaying it inside any DiagramView, populate it, and assign it to DiagramView.Diagram only after all items have been created. This will avoid many calls to the diagramview's repaint handler.

I hope that helps,
Stoyan
  
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