TreeMapHierarchicalDataAdapter Class

A data adapter that allows you to provide hierarchical data to the Tree Map.

Assembly : DevExpress.Xpf.TreeMap.v25.2.dll

NuGet Package : DevExpress.Wpf.TreeMap

Declaration

C#
VB.NET

csharp

public class TreeMapHierarchicalDataAdapter :
    TreeMapDataAdapterBase,
    ISupportNativeSource,
    INativeItemsCollector

Public Class TreeMapHierarchicalDataAdapter
    Inherits TreeMapDataAdapterBase
    Implements ISupportNativeSource,
               INativeItemsCollector

Remarks

This class introduces the TreeMapHierarchicalDataAdapter.DataSource property allowing you to specify the data source provided to the Tree Map and the TreeMapHierarchicalDataAdapter.ValueDataMember property that allows you to specify which data member is used as a value provider.

Example

To provide hierarchical data to the Tree Map, do the following.

Assign a newly created TreeMapHierarchicalDataAdapter to the TreeMapControl.DataAdapter property.
Specify the adapter’s TreeMapHierarchicalDataAdapter.DataSource and TreeMapHierarchicalDataAdapter.ValueDataMember properties.
Create Data Templates that will be used to represent the hierarchical data items.
MainWindow.xaml

xaml

<Window.Resources>
    <HierarchicalDataTemplate 
        DataType="{x:Type local:SideOfWorld}"
        ItemsSource="{Binding Countries}">
        <TextBlock 
            Margin="4,4,4,-3"
            Padding="4,2,0,2"
            Text="{Binding Name}"
            Foreground="White"
            Background="Gray"/>
    </HierarchicalDataTemplate>
    <DataTemplate
        DataType="{x:Type local:Country}">
        <Grid>
            <TextBlock 
                Padding="4,2,0,0"
                Text="{Binding Name}" 
                TextWrapping="WrapWithOverflow" 
                TextTrimming="WordEllipsis"/>
            <Border 
                BorderThickness="1" 
                BorderBrush="#60000000"/>
        </Grid>
    </DataTemplate>
</Window.Resources>

<Grid>
    <dxtm:TreeMapControl>
        <dxtm:TreeMapControl.Colorizer>
            <dxtm:TreeMapPaletteColorizer>
                <dxtm:Office2013Palette/>
            </dxtm:TreeMapPaletteColorizer>
        </dxtm:TreeMapControl.Colorizer>
        <dxtm:TreeMapHierarchicalDataAdapter
            DataSource="{Binding}"
            ValueDataMember="Gdp">
        </dxtm:TreeMapHierarchicalDataAdapter>
    </dxtm:TreeMapControl>
</Grid>

Inheritance

Object DispatcherObject DependencyObject Freezable TreeMapDependencyObject TreeMapDataAdapterBase TreeMapHierarchicalDataAdapter