The following example demonstrates how to provide an empty-surface brush, which will be applied to all cards that do not display a surface.

XAML
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<Grid xmlns:xcdg="http://schemas.xceed.com/wpf/xaml/datagrid">

  <Grid.Resources>

   <xcdg:DataGridCollectionViewSource x:Key="cvs_employees"

                                      Source="{Binding Source={x:Static Application.Current}, Path=EmployeesTable}"/>

 

     <LinearGradientBrush x:Key="emptySurfaceBrush"

                          StartPoint="0.5,1"

                          EndPoint="0.5,0">

        <GradientStop Offset="0" Color="#FF0E0E0E"/>

        <GradientStop Offset="0.33" Color="#FF323232"/>

        <GradientStop Offset="0.63" Color="#FF4C4C4C"/>

        <GradientStop Offset="1" Color="#FF949494"/>

     </LinearGradientBrush>

  </Grid.Resources>

 

  <xcdg:DataGridControl x:Name="EmployeesGrid"

                      ItemsSource="{Binding Source={StaticResource cvs_employees}}">

   <xcdg:DataGridControl.Columns>

      <xcdg:Column FieldName="LastName"

                   IsMainColumn="True"/>

   </xcdg:DataGridControl.Columns>

   <xcdg:DataGridControl.View>      

     <xcdg:CardflowView3D SideCardsCount="1"

                          EmptySurfaceBrush="{StaticResource emptySurfaceBrush}">

         <xcdg:CardflowView3D.Theme>

            <xcdg:ElementalBlackTheme/>

         </xcdg:CardflowView3D.Theme>

      </xcdg:CardflowView3D>

   </xcdg:DataGridControl.View>

  </xcdg:DataGridControl>

</Grid>
VB.NET
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Dim brush As New LinearGradientBrush()

brush.GradientStops.Add( New GradientStop( Color.FromArgb( 255, 14, 14, 14 ), 0 ) )

brush.GradientStops.Add( New GradientStop( Color.FromArgb( 255, 50, 50, 50 ), 0.33 ) )

brush.GradientStops.Add( New GradientStop( Color.FromArgb( 255, 76, 76, 76 ), 0.63 ) )

brush.GradientStops.Add( New GradientStop( Color.FromArgb( 255, 148, 148, 148 ), 1 ) )

dataGridControl.Columns( "LastName" ).IsMainColumn = True

Dim view As New CardflowView3D()

view.SideCardsCount = 1

view.EmptySurfaceBrush = brush

view.Theme = New ElementalBlackTheme()

dataGridControl.View = view
C#
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LinearGradientBrush brush = new LinearGradientBrush();

brush.GradientStops.Add( new GradientStop( Color.FromArgb( 255, 14, 14, 14 ), 0 ) );

brush.GradientStops.Add( new GradientStop( Color.FromArgb( 255, 50, 50, 50 ), 0.33 ) );

brush.GradientStops.Add( new GradientStop( Color.FromArgb( 255, 76, 76, 76 ), 0.63 ) );

brush.GradientStops.Add( new GradientStop( Color.FromArgb( 255, 148, 148, 148 ), 1 ) );

dataGridControl.Columns[ "LastName" ].IsMainColumn = true;

CardflowView3D view = new CardflowView3D();

view.SideCardsCount = 1;

view.EmptySurfaceBrush = brush;

view.Theme = new ElementalBlackTheme();

dataGridControl.View = view;