I have a CellValueStyleSelector that seems to think that all the values for all the fields in my grid are 2147483647, when examined in the debugger. "Selected" is an IEnumerable<T>, and appears to populate correctly in the grid.

<igDP:XamDataGrid DataSource="{Binding Selected}" 
				  ActiveDataItem="{Binding ActiveSelectedRecord, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"
				  ScrollViewer.CanContentScroll="True" 
				  SelectedItemsChanged="SelectedGrid_OnSelectedItemsChanged" 
				  RecordFilterDropDownPopulating="Grid_OnRecordFilterDropDownPopulating">
	<igDP:XamDataGrid.FieldSettings>
		<igDP:FieldSettings AllowEdit="False" 
							AllowFixing="Near" 
							AllowRecordFiltering="True" 
							AllowGroupBy="True"
							CellClickAction="SelectRecord"
							CellValuePresenterStyleSelector="{StaticResource CVPStyleSelector}"
							GroupByRecordPresenterStyleSelector="{StaticResource FieldStyleSelector}"
							EditorStyleSelector="{StaticResource FieldStyleSelector}"/>
	</igDP:XamDataGrid.FieldSettings>
	<igDP:XamDataGrid.FieldLayoutSettings>
		<igDP:FieldLayoutSettings HighlightAlternateRecords="True"
								  SelectionTypeCell="None"  
								  AllowFieldMoving="WithinLogicalRow" 
								  FilterUIType="LabelIcons" 
								  AutoGenerateFields="False"
								  AllowDelete="False"/>
	</igDP:XamDataGrid.FieldLayoutSettings>
	<igDP:XamDataGrid.FieldLayouts>
		<igDP:FieldLayout>
			<igDP:Field Name="Id" Label="{Binding Path=Owner.DataPresenter.DataContext.IdLabel, RelativeSource={RelativeSource Self}}" Width="100"/>
			<igDP:Field Name="Description" Label="Description" Width="200" IsScrollTipField="True"/>
			<igDP:Field Name="ParentId" Label="{Binding Path=Owner.DataPresenter.DataContext.ParentIdLabel, RelativeSource={RelativeSource Self}}" Width="100"/>
			<igDP:Field Name="ParentDescription" Label="{Binding Path=Owner.DataPresenter.DataContext.ParentDescriptionLabel, RelativeSource={RelativeSource Self}}" Width="200"/>
		</igDP:FieldLayout>
	</igDP:XamDataGrid.FieldLayouts>
</igDP:XamDataGrid>

public override Style SelectStyle(object item, DependencyObject container)
{
	Style defaultStyle = Application.Current.FindResource("CellBackgroundStyle") as Style;

	try
	{
		CellValuePresenter fieldPresenter = container as CellValuePresenter;
		Field field = fieldPresenter?.Field;
		// All values for all fields are reporting as 2147483647
		_row = fieldPresenter?.Record;

		if (_row == null)
			return defaultStyle;

		Style style = GetCellValuePresenterStyle(defaultStyle, field);
		return style;
	}
	catch (System.Exception ex)
	{
		ExceptionHelper.LogError(Core.ExceptionManagement.LogLevel.Error, ex);
		return defaultStyle;
	}
}