Xceed DataGrid for WPF v7.2 Documentation
Multi-surface Themes Overview
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Prerequisite Knowledge
DataGrid Fundamentals: Views and Themes Overview

Themes determine the color scheme and default visual cues applied to the elements in a grid and, in the case of multi-surface themes, how and where the regions supported by a surface configuration are displayed.

Multi-surface themes (see Table 1) can be set through a multi-surface view's Theme property (see Example 1). If a multi-surface theme is not specified, the Elemental Black theme will be used. 

Table 1:  Multi-surface themes

Theme Color scheme Attribute syntax Property element syntax Target views Assembly
Elemental Black [View.]Elemental.Black
[View.]ElementalBlackTheme		 ElementalBlackTheme CardflowView3D Xceed.Wpf.DataGrid.Views3D
Elemental Blue [View.]Elemental.Blue
[View.]ElementalBlueTheme		 ElementalBlueTheme CardflowView3D Xceed.Wpf.DataGrid.Views3D
Elemental Silver [View.]Elemental.Silver
[View.]ElementalSilverTheme		 ElementalSilverTheme CardflowView3D Xceed.Wpf.DataGrid.Views3D
Chameleon [View.]Chameleon
[View.]ChameleonTheme		 ChameleonTheme CardflowView3D Xceed.Wpf.DataGrid.Views3D

A multi-surface theme provides the default SurfaceConfigurations that will be applied to a multi-surface view's surfaces (see DefaultSurfaceConfigurations property). These default configurations can be overridden by adding surface configurations to a theme's SurfaceConfigurations collection and specifying the surfaces to which they will be applied using the Surfaces attached property defined on the multi-surface view (see Examples 1 and 3 in Surface Configurations).

Through the DefaultDataRegionConfiguration, DefaultTitleRegionConfiguration, and DefaultImageRegionConfiguration properties, a multi-surface theme can define region configurations that will be applied to all regions in all surfaces for which a corresponding region configuration has not been explicitly defined (see Examples 2 and 3 in Surface Configurations). 

Title-region Positions

Where a title region is positioned on a surface is determined by each multi-surface theme, which can also support more than one position for specific surface configurations (see Table 2). As such, multi-surface themes that support multiple title-region positions expose a TitleRegionPosition attached property that is specific to the theme and which can be set on any of the supported surface configurations (see Example 2). The TitleRegionPosition property can also be set directly on the theme to change the title-region position of all the supported surface configurations.

Table 2: Supported title-region positions

Theme Surface configuration Positions Enumeration
Elemental Blue, Black, and Silver themes TitleSurfaceConfiguration Top, Middle, and Bottom ElementalTitleRegionPosition
Elemental Blue, Black, and Silver themes ImageAndTitleSurfaceConfiguration Top, Middle, and Bottom ElementalTitleRegionPosition
Chameleon theme TitleSurfaceConfiguration Left and Right ChameleonTitleRegionPosition
Chameleon theme ImageAndTitleSurfaceConfiguration Left and Right ChameleonTitleRegionPosition
Chameleon theme CompleteSurfaceConfiguration Left and Right ChameleonTitleRegionPosition
Chameleon theme TitleAndDataSurfaceConfiguration Left and Right ChameleonTitleRegionPosition

Examples

All examples in this topic assume that the grid is bound to the Employees table of the Northwind database, unless stated otherwise.

Example 1: Setting a multi-surface view

The following example demonstrates how to set a multi-surface theme using property element syntax.

XAML
Copy Code 
<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}"/>

   </Grid.Resources>

   <xcdg:DataGridControl x:Name="EmployeesGrid"

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

     <xcdg:DataGridControl.View>

        <xcdg:CardflowView3D>

           <xcdg:CardflowView3D.Theme>

              <xcdg:ChameleonTheme/>

           </xcdg:CardflowView3D.Theme>

        </xcdg:CardflowView3D>

     </xcdg:DataGridControl.View>

   </xcdg:DataGridControl>

</Grid>
VB.NET
Copy Code 
Dim view As New CardflowView3D()

view.Theme = New ChameleonTheme()

dataGridControl.View = view
C#
Copy Code 
CardflowView3D view = new CardflowView3D();

view.Theme = new ChameleonTheme();

dataGridControl.View = view;

 

Example 2: Changing a title-region position

The following example demonstrates how to change the position of the title-surface configuration's title region.

XAML
Copy Code 
<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}"/>

  </Grid.Resources>

  <xcdg:DataGridControl x:Name="EmployeesGrid"

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

     <xcdg:DataGridControl.View>

        <xcdg:CardflowView3D>  

         <xcdg:CardflowView3D.Theme>

              <xcdg:ElementalBlackTheme>

                 <!-- The DefaultTitleRegionConfiguration will be applied to all title regions in all surfaces

                      for which a RegionConfiguration has not been explicitly provided. -->

                 <xcdg:ElementalBlackTheme.DefaultTitleRegionConfiguration>

                    <xcdg:RegionConfiguration FieldNames="FirstName, LastName"

                                              ShowCellTitles="False"

                                              ReadOnly="True">

                       <xcdg:RegionConfiguration.Template>

                          <DataTemplate>

                             <!-- In this example, a fixed font size is not ideal since we don't

                                  know the final size of a card and we want the font size of the Title

                                  to vary along with the card size; therefore, we will place everything

                                  in a Viewbox, which will handle everything. -->

                             <Viewbox>

                                <!-- Using a Viewbox will stretch each title according to its

                                     content resulting in titles that can be of various sizes.

                                     This result may not always be esthetically pleasing and can

                                     also produce perspective problems (optical illusions).

                                     Giving the root element of the Viewbox an arbitrary width

                                     will correct this undesirable behavior. This size of 125 was

                                     determined by trial and error using our data source and it may

                                     be appropriate to change it according to the data. -->

                                <Grid Width="125">

                                   <!-- This grid is used to center the title when its desired

                                        width is less than 100. -->

                                   <Grid.ColumnDefinitions>

                                      <ColumnDefinition Width="*"/>

                                      <ColumnDefinition Width="Auto"/>

                                      <ColumnDefinition Width="*"/>

                                   </Grid.ColumnDefinitions>

                                   <StackPanel Orientation="Horizontal"

                                               Grid.Column="1">

                                      <xcdg:DataCell FieldName="FirstName"

                                                     Margin="0, 0, 3, 0"/>

                                      <xcdg:DataCell FieldName="LastName"/>

                                   </StackPanel>

                                </Grid>

                             </Viewbox>

                          </DataTemplate>

                       </xcdg:RegionConfiguration.Template>

                    </xcdg:RegionConfiguration>

                 </xcdg:ElementalBlackTheme.DefaultTitleRegionConfiguration>

                 <xcdg:ElementalBlackTheme.SurfaceConfigurations>

                    <!-- Because an attempt is made to automatically detect an image in the data 

                         item, there is no need to specify the name of the field that contains 

                         the image in the surface configuration's ImageRegionConfiguration. -->

                    <xcdg:ImageAndTitleSurfaceConfiguration xcdg:CardflowView3D.Surfaces="Center"/>               

                   <!-- This surface will use the DefaultTitleRegionConfiguration; however, it will display

                        its title region in the middle oft he surface rather than the bottom (default).

                        

                        It is important to note that themes decide what title-region positions they support

                        and for which surface configuration. -->

                   <xcdg:TitleSurfaceConfiguration xcdg:CardflowView3D.Surfaces="Left, Right"

                                                   xcdg:ElementalBlackTheme.TitleRegionPosition="Middle"/>

                    <!--In this surface configuration there is no need to specify the field names to use since:

                           - the image field is automatically detected and used in the image region

                           - the fields used in the title region are specified in the 

                             DefaultTitleRegionConfiguration

                           - the fields that have not been explicitly assigned to a specific region will 

                             automatically be placed in the default "Data" region.-->

                    <xcdg:CompleteSurfaceConfiguration xcdg:CardflowView3D.Surfaces="Back"/>

                 </xcdg:ElementalBlackTheme.SurfaceConfigurations>

              </xcdg:ElementalBlackTheme>

           </xcdg:CardflowView3D.Theme>

        </xcdg:CardflowView3D>

     </xcdg:DataGridControl.View>

  </xcdg:DataGridControl>

</Grid>
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