adding idiagrammodel connections is slow

I have about 600 connections being added which is taking about 30 seconds. Is this expected? I have the latest WPFDiagrams. Is there any way to speed this up?

Hi,

Something that should help speed this up is by setting the CanCalculateConnectionIntersections property on the DiagramSurface to false. This property is used to allow connection bridges to be drawn at connection intersections - so keep in mind that the connection bridges feature will not be available when you set the property to false. We probably should have made this property false by default. Let me know how that goes.

-Jason Fauchelle

Hi Jason,

Unfortunately we already have that set to false :(

        DiagramSurface ds= new DiagramSurface();

        ds.Formatter = (IDiagramFormatter)View.FindResource("diagramFormatter");
        ds.CanCalculateConnectionIntersections = false;
        ds.IsReadOnly = false;
        ds.VerticalAlignment = VerticalAlignment.Stretch;
        ds.HorizontalAlignment = System.Windows.HorizontalAlignment.Stretch;
        ds.IsSmartScrollingEnabled = false;
        ds.SizeToFit();
        ds.DragAction = DiagramSurfaceDragAction.Pan;
        ds.HorizontalScrollBarVisibility = ScrollBarVisibility.Auto;
        ds.VerticalScrollBarVisibility = ScrollBarVisibility.Auto;
        ds.CanAddOrRemoveNodes = true;
        ds.ZoomMode = ZoomMode.MouseWheel;
        ds.Background = (LinearGradientBrush)View.FindResource("diagramBackgroundBrush");            
        ds.SelectionMode = System.Windows.Controls.SelectionMode.Extended;

Thank you....

Hi,

I'll have a go at reproducing this issue next week, and see if anything can be done about the performance. If you are able to send me a simple repro project, or an example of the code that populates the connections, that would be a huge help to looking into this.

-Jason Fauchelle

Hi,

I have looked into this further but unfortunately have not found a way to improve the performance here. If you send through a repro project, I'll certainly have another go.

-Jason Fauchelle

Thanks Jason, For now, we are making do with the time. I'll cobble together a repro project if they decide it's not good enough. Thanks for looking into it.