Hi,

today i updated a project from 10.2.20102.2174 to 2207.

In my window I have several views in a XamDockManager.
In one view I have a XamDataGrid which has a FieldLayout with a SummaryDefinition.
Since the update I get a System.NullReferenceException when I try to open the view with an empty datasource.

The stacktrace end's with:

bei Infragistics.Windows.DataPresenter.GridViewPanelFlat.ArrangeHelper(UIElement visualChildElement, Dictionary`2 headerRecordMap, Boolean orientationIsVertical, Boolean isReverseLayoutForBottomFixed, Double extentUsedByLastItem, Double clipExtent, Size arrangeSize, Rect& arrangeRect, Double& recordIndent)

bei Infragistics.Windows.DataPresenter.GridViewPanelFlat.ArrangeOverride(Size finalSize)

The whole stacktrace is attached.

When I loaded the Infragistics Sourcecode, Visual Studio points to the file DataPresenter\GridViewPanelFlat.cs and the following line where headerRecordMap is NULL:

// JJD 1/24/11 - TFS63831
// Make sure the header is removed from the map so it
// doesn't get arranged out of view
headerRecordMap.Remove(attachedToRecord);

Removing the SummaryDefinition from my FieldLayout avoids the exception but since it worked in 2174 it seems to be a bug.