Hello Ryan,

Thank you for your feedback. I am glad that you resolved your issue and I believe that other community members may benefit from this as well.

Thanks again.

Thanks!  It didn't do all of what I wanted to do but I made a converter that turns the expansion indicator to hidden instead of collapsed and now it's properly hierarchical.

Hello Ryan,

I have created a sample project for you with the functionality you want. Basically I copied the default Style of the DataRecordPresenter and set its HeaderAreaBackground to White and the BorderThiknees of a Border called "fill" to 0. I also added a Style for the LabelPresenter and set its Background to Transparent. Please let me know if this helps you or you have further questions on this matter.

Looking forward for your reply.

<DataPresenter:XamDataGrid x:Name="dataGrid" Theme="[Current]" GroupByAreaLocation="None">

<DataPresenter:XamDataGrid.Resources>

<Style TargetType="DataPresenter:HeaderPresenter">

<Setter Property="FontWeight" Value="Bold"/>

</Style>

</DataPresenter:XamDataGrid.Resources>

<DataPresenter:XamDataGrid.FieldLayouts>

<DataPresenter:FieldLayout Description="Patients">

<DataPresenter:UnboundField BindingPath="Patient.FirstName" Label="First Name" />

<DataPresenter:UnboundField BindingPath="Patient.LastName" Label="Last Name" />

<DataPresenter:Field Name="Visits" />

</DataPresenter:FieldLayout>

<DataPresenter:FieldLayout>

<DataPresenter:Field Name="Date" Label="Visit: Date"/>

</DataPresenter:FieldLayout>

</DataPresenter:XamDataGrid.FieldLayouts>

<DataPresenter:XamDataGrid.FieldLayoutSettings>

<DataPresenter:FieldLayoutSettings

LabelLocation="SeparateHeader"

AutoFitMode="Always"

ExpansionIndicatorDisplayMode="CheckOnDisplay"

HeaderPlacement="OnTopOnly"

AutoGenerateFields="False"

RecordSelectorLocation="None"

HeaderPrefixAreaDisplayMode="None" />

</DataPresenter:XamDataGrid.FieldLayoutSettings>

<DataPresenter:XamDataGrid.FieldSettings>

<DataPresenter:FieldSettings AllowEdit="False"

LabelClickAction="SortByMultipleFieldsTriState"

CellClickAction="SelectRecord"

AllowGroupBy="True"

AllowHiding="ViaFieldChooserOnly"

CellContentAlignment="LabelAboveValueAlignCenter"

AllowResize="True"

ExpandableFieldRecordExpansionMode="ShowExpansionIndicatorIfSiblingsExist"

ExpandableFieldRecordHeaderDisplayMode="NeverDisplayHeader"

AllowRecordFiltering="False"

FilterClearButtonVisibility="Visible" />

</DataPresenter:XamDataGrid.FieldSettings>

</DataPresenter:XamDataGrid>

Basically what I want is that box in the upper left to be hidden but always have that space still there, even for rows that don't have the expansion indicator.  Otherwise it doesn't look very hierarchical...