Forgot to mention if there is any workaround for this bug that you can think of.  Only thing I can think of trying is to use a custom formula instead of sum. 

Now that I have figured out this bug I think this may very well be the bug that has been plaguing me for years with the calculator in conjunction with filters.  It was so bad that I resorted to having to set Hidden on a row instead of using a filter because I would often get the NullReferenceException from the calculator.  

I believe the calculator was trying to iterate rows for a formula and would call GetRowCalcIndex with null for the row if a filter was applied to a column and filtered out a parent row. 

I look forward to you fixing this bug.

emarkunger said:

The developer was unable to reproduce it

What developer are you referring to?

Can you post your modified sample so we can try it out? I tried running the WinGrid Summaries CS project, but it doesn't even have a child band in the grid.

As for a workaround, try this:

this.ultraGrid1.DisplayLayout.Override.FormulaRowIndexSource = Infragistics.Win.UltraWinGrid.FormulaRowIndexSource.RowIndex;

Hi Mike,

David is working on the case.  He should be able to run my sample now to reproduce.  Ths case # is CAS-53752-WM7JTL.  I have attached the sample project.   I can't use RowIndex since I only want my summaries/formulas to include visible rows. 

I ran the sample with version 9.2.20092.2103 installed.

Hi

Has there been any movement in your support case?

I am experiencing a similar problem. In my case i have a reusable component on which the user can group the grid by a number of predefined columns by means of a right click menu (instead of having to drag and drop them manually on the header).

The user can check a checkbox on each row to select rows for further processing. When the user clicks the menu, the grid will be grouped by those columns but immediately after i get the affore mentioned error. Strange thing is that when i don't show the checkbox, i do not get an error on performing the grouping using the right click menu.

I am using version 10.3.20103.1000, debugging shows me that the error is originating from infragistics code.

Kind Regards,

Peter

Hello Sean K,

Thank you for contacting Infragistics Community.

I have tested the fix for the original issue in 2012 vol2 and everything works ok for me. Since you have a slightly different scenario, the MessageBox might have something to do with that behavior. Could you please comment the code that shows that MessageBox and verify if the same exception going to appear again, just for testing purposes?

Also if you are able to duplicate it in a small sample I will be glad to look into it.

Please feel free to let us know if you have any other questions with this matter.

Note that I able to get rid of this error by setting CalcFrequency on my UltraCalcManager to Synchronous...

I'd like to switch it back to asynch since there's a strong chance I'll be taking a performance hit when this grid loads more than a few rows.

User updates column in grid

AfterCellUpdate is fired/caught

Update is passed to database

------ABOVE ERROR------

MessageBox shows stating that save was successful (Note that all updates are properly being passed to DB)

---APP CRASHES-----------

Note:

    No multithreading in this app

    Summaries exist (but not on the "TradeExecution" band)

Hi, I'm still getting this error in V 12.2....

at Infragistics.Win.UltraWinGrid.RefRowIterator.MoveNext()
at Infragistics.Win.UltraWinGrid.RefSummaryValueCollection.RefSummaryValueCollectionEnumerator.MoveNext()
at Infragistics.Win.CalcEngine.RangeCalcInfo.EvaluateNextRow()
at Infragistics.Win.CalcEngine.UltraCalcEngine.Evaluate(Int64 ticks)
at Infragistics.Win.CalcEngine.UltraCalcEngine.Recalc(Int64 ticks, Boolean isStartOfRecalcOperation)
at Infragistics.Win.CalcEngine.UltraCalcEngine.Recalc(Int64 ticks)
at Infragistics.Win.UltraWinCalcManager.UltraCalcManager.ReCalcInternal(Int64 ticks)
at Infragistics.Win.UltraWinCalcManager.UltraCalcManager.ReCalc(Int64 millis)
at Infragistics.Win.UltraWinCalcManager.UltraCalcManager.onTimerTick(Object sender, EventArgs e)
at System.Windows.Forms.Timer.TimerNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at System.Windows.Forms.SafeNativeMethods.MessageBox(HandleRef hWnd, String text, String caption, Int32 type)
at System.Windows.Forms.MessageBox.ShowCore(IWin32Window owner, String text, String caption, MessageBoxButtons buttons, MessageBoxIcon icon, MessageBoxDefaultButton defaultButton, MessageBoxOptions options, Boolean showHelp)
at System.Windows.Forms.MessageBox.Show(String text)
at FMSClient.SubMenu.TradeEdit.dgEditTrades_AfterCellUpdate(Object sender, CellEventArgs e) in C:\Development\MSMQ\FMSClient\SubMenu\TradeEdit.cs:line 326

Any suggestions?

Hello Srikanth,

This has been already fixed and you could use the latest service release for NetAdvantage for Windows Forms 11.2 - 2074.

This service release is now available under your account at the Infragistics Website. To download the service release, log in to
‘My IG’ and select ‘Keys & Downloads’. Select the appropriate tab for this product, then the license key. The available service releases should now be listed on the page.

Please let me know if I can provide any further assistance.