"Parameter is not valid.
at System.Drawing.Graphics.GetHdc() at Infragistics.Win.UltraWinGrid.ExcelExport.UltraGridExcelExporter..ctor() at Infragistics.Win.UltraWinGrid.ExcelExport.UltraGridExcelExporter..ctor(IContainer container) at MyGrid..ctor()"
For some reason, after a period of time, whenever one of my win forms loads, and there's a grid to be initialised, I get the above error. The error persists until the application is restarted. Has anybody else seen this? I am using 8.3.20083.2021. I'm sure I've seen somewhere that it may be down to the number of window handles it uses up, as there is a leak of sorts. I realise that I could upgrade to the latest version, but management will not allow this unless there is a very good reason as it envolves a mass roll out to thousands of user machines. Perhaps there is a hot fix.
If somebody could let me know in which version it was found and perhaps in which version is has been fixed?
Thanks for any help, Andrew
Hi Andrew,
I've never seen an error like this before that I recall.
I suppose a memory leak could explain this. That should be easy enough to check. Bring up your task manager in Windows and there's a Performance tab that shows you the current number of handles.
Hi Mike,
I have an open case number for this - "CAS-40329-O7D41C".
You'll be able to see all the detail in there, but I am suggesting there is a problem with the cached graphics mechanism in the UltraExplorerBar control (which seems to be a univeral mechanism across infragistic controls, including the UltraGridExcelExporter). We are seeing the problem, specifically when an UltraExplorerBar group is selected.
internal void AnimateGroupSelection(UltraExplorerBarGroup newSelectedGroup)(UltraExplorerBar.cs – Line 17485)
(DrawUtility.ReleaseCachedGraphics() is not being called within AnimateGroupSelection which I believe is causing the problem).
In our code, if we select the group .Selected = True we get the error in our main application. If we omit this, the problem goes away.
It took us 3 - 4 days (changeset by changeset in Team Foundation Server) to work this one out.
(I did by the way check the windows handles on a few of our servers where users run the application, and all looked normal. Handles did not go over 600 at any point in the day).
Kind regards,
Andrew
I am getting this same 'parameter is not valid exception in the windows with Infragistic version 15.2. pls send the sol on same
That Exception is very vague and can occur for any number of reasons. Have you tried getting the latest service release?
If that doesn't help, can you reproduce the issue in a small sample project and post it here so we can check it out?
Hi,
We are using Infragistics 14.1 WinForms and we are getting this error from production as well.
is there any solution to this?
Details:
Inner Exception:
Parameter is not valid.
at System.Drawing.Graphics.GetHdc()
at Infragistics.Win.UltraWinGrid.ExcelExport.UltraGridExcelExporter..ctor()
at Infragistics.Win.UltraWinGrid.ExcelExport.UltraGridExcelExporter..ctor(IContainer container)
its also happened with me in this version 13.1.20131.2124 not in exporting just in initializing in this generated code
Me.UltraGridExcelExporter1 = New Infragistics.Win.UltraWinGrid.ExcelExport.UltraGridExcelExporter(Me.components)
Same link I gave you several posts back.
How to get the latest service release - Infragistics Community
Anyway, threading issues can be like that. They are quirky and sometimes you can just get lucky and they don't happen until you move something around or shift the timing. Or, I could be wrong and the issue is nothing to do with threading.
If you can duplicate the exception in a small sample project, we'd be happy to take a look, but that sample should not include any background threads to eliminate that as the possible cause.