Hierarchical data - one parent two child collections?

Fred posted over 13 years ago

Hi all,

I have been struggling with a certain scenario for a fairly complex grid we are developing. I have pasted some sample XAML and bolded the line that isn't working). I didn't include the actual field layout definitions as that isn't the problem - I am overriding the cellvaluepresenter to present the data using some standard controls. I'd just like any extra row to appear after the first child records. (I'm using infragistics 10.2 CLR 4 service release)

In short, I have the CabinModelCollection which is a class with many properties. PaxList is one of those properties, and it is a List(Of PaxModel). ColTemp is a sample List (Of TempModel). If I just have the PaxList field defined, everything works. Whenever I try to add a second child (the bold line), nothing displays (no databinding errors or anything else is occurring). No children at all display.

My main issue is that I want a "footer row" (that I was trying to fake with the ColTemp object). I don't really want a "summary", I want a footer to appear that uses properties from the parent object (CabinModelCollection) AFTER the PaxList children. However I'd make whatever models / data manipulations necessary to accomplish this but I just have not been able to find a sample in the feature browser or the internet that is doing exactly what I want. I need two fieldlayouts to have the same ParentFieldLayoutKey. Or at least I need to figure out how to simulate that.

I do have some rules in place that should make this easier - Each parent would have exactly ONE child object and ONE footer row/object. Child objects have no further children. I've seen something about NestedProperties but have been unable to make that happen either. Is there anything obvious I'm doing wrong?

             <igDP:XamDataGrid x:Name="grdCabinList" IsUndoEnabled="True" Height="Auto"
                                DataSource="{Binding CabinModelCollection}"
                                IsGroupByAreaExpanded="False"
                                GroupByAreaLocation="None"
                                GroupByAreaMode="DefaultFieldLayoutOnly"
                                ScrollViewer.VerticalScrollBarVisibility="Auto"
                                ScrollViewer.CanContentScroll="True"
                                IsSynchronizedWithCurrentItem="True" Margin="0,5,0,0"
                                           RecordContainerGenerationMode="LazyLoad"
                                CellContainerGenerationMode="LazyLoad">


                            <igDP:XamDataGrid.FieldLayoutSettings>
                                <igDP:FieldLayoutSettings
                                RecordSelectorLocation="None"
                                HighlightAlternateRecords="True"
                                AutoGenerateFields="False"
                                SelectionTypeCell="None"
                                SelectionTypeField="None"
                                SelectionTypeRecord="Range"
                                AllowClipboardOperations="All"
                                AllowFieldMoving="No"
                                   />
                            </igDP:XamDataGrid.FieldLayoutSettings>
                            <igDP:XamDataGrid.FieldLayouts>

                                <igDP:FieldLayout Key="CabinData" >
                                    <igDP:FieldLayout.Settings>
                                        <igDP:FieldLayoutSettings LabelLocation="Hidden"/>
                                    </igDP:FieldLayout.Settings>

                                    <igDP:FieldLayout.FieldSettings>
                                        <igDP:FieldSettings
                                            ExpandableFieldRecordHeaderDisplayMode="NeverDisplayHeader"/>
                                    </igDP:FieldLayout.FieldSettings>

                   <igDP:FieldLayout.Fields>
                    <igDP:UnboundField Label="" BindingPath="Ind_Book_Nbr" Name="CabinData" BindingMode="OneWay" Width="Auto" >
                        <igDP:UnboundField.Settings>
                            <igDP:FieldSettings EditAsType="{x:Type sys:String}">
                                <igDP:FieldSettings.CellValuePresenterStyle>
     <ADDED CUSTOM STYLE NOT IMPORTANT TO SAMPLE>

      </igDP:FieldSettings.CellValuePresenterStyle>
    </igDP:FieldSettings>
    </igDP:UnboundField.Settings>
</igDP:UnboundField>

<igDP:Field Label="Customer Data" Name="PaxList" Visibility="Hidden"/>
<igDP:Field Label="Customer Summary" Name="ColTemp" Visibility="Hidden"/>

</igDP:FieldLayout.Fields>

<igDP:FieldLayout Key="PaxList" ParentFieldLayoutKey="CabinData" ParentFieldName="PaxList">
                     <igDP:FieldLayout.FieldSettings>
                                        <igDP:FieldSettings AllowEdit="True" LabelTextAlignment="Center" AllowResize="False"
                                            AllowCellVirtualization="True"
                                            AllowLabelVirtualization="True"
                                            Height="Auto"
                                            AllowRecordFiltering="False"
                                            LabelClickAction="Nothing"
                                            CellClickAction="EnterEditModeIfAllowed"
                                            AllowSummaries="True"
                                            />

</igDP:FieldLayout.FieldSettings>

<igDP:FieldLayout.Fields >
<FIELD LAYOUTS NOT IMPORTANT TO EXAMPLE>
</igDP:FieldLayout.Fields>

</igDP:FieldLayout>

                                <igDP:FieldLayout Key="ColTemp" ParentFieldLayoutKey="CabinList" ParentFieldName="ColTemp">
                                    <igDP:FieldLayout.FieldSettings>
                                        <igDP:FieldSettings AllowEdit="True" LabelTextAlignment="Center" AllowResize="False"
                                            AllowCellVirtualization="True"
                                            AllowLabelVirtualization="True"
                                            Height="Auto"
                                            AllowRecordFiltering="False"
                                            LabelClickAction="Nothing"
                                            CellClickAction="EnterEditModeIfAllowed"
                                            AllowSummaries="False"
                                            />

</igDP:FieldLayout.FieldSettings>

<igDP:FieldLayout.Fields >

<FIELD LAYOUTS>
</igDP:FieldLayout.Fields >

</igDP:FieldLayout>

</igDP:XamDataGrid.FieldLayouts>

</igDP:XamDataGrid>

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Fred posted over 13 years ago

Note that I have a typo, both of the ParentKeys read "CabinData" not "CabinList"
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Fred posted over 13 years ago in reply to Fred

Also, I can NEVER get a summary row to appear. I have scoured the internet and nobody has a sample beyond the far-too-simplistic one that is in the feature browser. I can't believe that we are the only people in the world to not be binding to datasets but to collections of rich objects. Also, despite there being claims that you can have multiple children, I also find no example in the feature browser or in anyone's published examples. I have a feeling it is just something simple which is why I'm surprised there is so little info on it.
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