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Certain diagrams throw an IComparer error when calling LayeredLayout.Arrange() (Read 7639 times)

Paul YaBB Newbies Offline Posts: 17 Joined: Jan 8^th, 2013	Certain diagrams throw an IComparer error when calling LayeredLayout.Arrange() Feb 10^th, 2014 at 5:10pm	Print Post
	I have some customers that are seeing this error when LayeredLayout.Arrange() is called: Unable to sort because the IComparer.Compare() method returns inconsistent results. Either a value does not compare equal to itself, or one value repeatedly compared to another value yields different results. x: '', x's type: 'cbfa34fb7e2601a8fe9ded6b5a5f2bbbc', IComparer: 'A.c4fe4829022cc48f721ec592db81a6431'. Attached is XML from one of diagrams that is causing the error. Edit: We are using version 6.0.3

	APSS_workflow.zip (Attachment deleted)
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Stoyo God Member Offline MindFusion support Posts: 13230 Joined: Jul 20^th, 2005	Re: Certain diagrams throw an IComparer error when calling LayeredLayout.Arrange() Reply #1 - Feb 10^th, 2014 at 5:59pm	Print Post
	What does your layout code look like?


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Paul YaBB Newbies Offline Posts: 17 Joined: Jan 8^th, 2013	Re: Certain diagrams throw an IComparer error when calling LayeredLayout.Arrange() Reply #2 - Feb 10^th, 2014 at 7:41pm	Print Post
	This is all I am doing to the layout before calling Arrange(): LayeredLayout layout = new LayeredLayout(); layout.StartNode = startStep; layout.EndNode = stopStep; layout.EnforceLinkFlow = true; layout.LayerDistance = 75; layout.NodeDistance = 150;


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Stoyo God Member Offline MindFusion support Posts: 13230 Joined: Jul 20^th, 2005	Re: Certain diagrams throw an IComparer error when calling LayeredLayout.Arrange() Reply #3 - Feb 10^th, 2014 at 8:09pm	Print Post
	That works in my test project, with the traffic light nodes assigned to start / stopStep. What's the full stack trace shown for that exception?


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Paul YaBB Newbies Offline Posts: 17 Joined: Jan 8^th, 2013	Re: Certain diagrams throw an IComparer error when calling LayeredLayout.Arrange() Reply #4 - Feb 10^th, 2014 at 8:10pm	Print Post
	I was able to get around the error by setting EnforceLinkFlow to false, but when we had to upgrade to 6.0.3 to fix an out of memory issue with large diagrams we were told to enable EnforceLinkFlow. What is the best setting to reduce the layout time and avoid any errors?


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Stoyo God Member Offline MindFusion support Posts: 13230 Joined: Jul 20^th, 2005	Re: Certain diagrams throw an IComparer error when calling LayeredLayout.Arrange() Reply #5 - Feb 10^th, 2014 at 8:20pm	Print Post
	That code works in my test project, with the traffic light nodes assigned to start / stopStep. What's the full stack trace shown for that exception?


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Paul YaBB Newbies Offline Posts: 17 Joined: Jan 8^th, 2013	Re: Certain diagrams throw an IComparer error when calling LayeredLayout.Arrange() Reply #6 - Feb 10^th, 2014 at 8:50pm	Print Post
	Here is the StackTrace: at System.Collections.Generic.ArraySortHelper`1.Sort(T[] keys, Int32 index, Int32 length, IComparer`1 comparer) at System.Array.Sort[T](T[] array, Int32 index, Int32 length, IComparer`1 comparer) at System.Collections.Generic.List`1.Sort(Int32 index, Int32 count, IComparer`1 comparer) at A.cc9c96170735309eb143e1580e0c72508.c0fbb3ca2121659f890b58a89ae53409c(Boolean ca0fe6b943c53d466737ee1913e97ccff, Int32 cd1e6f3b82e0e57cb6c3d38adcef7ed39) at A.cc9c96170735309eb143e1580e0c72508.c0fbb3ca2121659f890b58a89ae53409c() at A.cc9c96170735309eb143e1580e0c72508.ca8163ba383abcda2d3de1ba9d1e29903(c210dd93cc f2b4d1d04f8ae675e87487a c52319c3bd0e78eaa102a3fa2daff1ce2, cec9ae34113b9d4686a0552de4bb64bc3 c8d3c5967f000d0d57c220dcc8c732458, ce08062f88d34e7a0f9a43a0577a5fcb4 cf93b19b342695a7bac81395c68261cd7) at MindFusion.Diagramming.Layout.LayeredLayout.c11331ec940f4b80205644674193186b7(Di agram c6d288cf08ca4dd554843fd0d84cfbf6a, DiagramItemCollection c970a513ad6e4aa62c1308323d7044674) at MindFusion.Diagramming.Layout.Layout.Arrange(Diagram diagram, DiagramItemCollection items) at MindFusion.Diagramming.Layout.Layout.Arrange(Diagram diagram) at DSI.PVECommon.WorkFlow.WFDesignControl.AddWorkflowToDesigner(WorkFlowDef wf)


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Stoyo God Member Offline MindFusion support Posts: 13230 Joined: Jul 20^th, 2005	Re: Certain diagrams throw an IComparer error when calling LayeredLayout.Arrange() Reply #7 - Feb 10^th, 2014 at 9:30pm	Print Post
	What .NET version does your application run on, and does it throw the exception each time you arrange the attached diagram? The results of the comparer used by the code from that stack trace depend on LayeredLayout.StableSort value, so you might check if enabling StableSort changes anything.


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Paul YaBB Newbies Offline Posts: 17 Joined: Jan 8^th, 2013	Re: Certain diagrams throw an IComparer error when calling LayeredLayout.Arrange() Reply #8 - Feb 10^th, 2014 at 11:19pm	Print Post
	The application is running on .NET 4.0, and it does throw the exception each time Arrange() is called. I was able to set StableSort to true and leave EnforceLinkFlow enabled and not get the error.


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Stoyo God Member Offline MindFusion support Posts: 13230 Joined: Jul 20^th, 2005	Re: Certain diagrams throw an IComparer error when calling LayeredLayout.Arrange() Reply #9 - Feb 11^th, 2014 at 12:53pm	Print Post
	We still could not reproduce that (with StableSort = false), running the layout code on several test systems of ours. Does your application change anything in the diagram after loading and before calling Arrange?


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Paul YaBB Newbies Offline Posts: 17 Joined: Jan 8^th, 2013	Re: Certain diagrams throw an IComparer error when calling LayeredLayout.Arrange() Reply #10 - Feb 11^th, 2014 at 2:55pm	Print Post
	The method that is calling Arrange does not load a saved diagram, it creates a new diagram, adds a list of shapes, and then creates the links between them. Once all of the links are created, Arrange is called. The XML attached to this thread was captured right before that call.


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Stoyo God Member Offline MindFusion support Posts: 13230 Joined: Jul 20^th, 2005	Re: Certain diagrams throw an IComparer error when calling LayeredLayout.Arrange() Reply #11 - Feb 11^th, 2014 at 6:20pm	Print Post
	Could you check if this test project throws the exception on your system? https://mindfusion.eu/_samples/LayeredLayout_test.zip Add the control's setup folder /CLR4 subfolder to Project Properties -> Reference Paths to build it.


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Paul YaBB Newbies Offline Posts: 17 Joined: Jan 8^th, 2013	Re: Certain diagrams throw an IComparer error when calling LayeredLayout.Arrange() Reply #12 - Feb 25^th, 2014 at 4:57pm	Print Post
	Sorry for the delay, for some reason I don't receive notifications from this forum. I ran your test project and did not see the error. Our QA team had a tough time reproducing the problem as well, so environment might be a factor. In any case, the StableSort fix is working for us. Thanks.


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