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DevExpress v24.2 Update — Your Feedback Matters

Our What's New in v24.2 webpage includes product-specific surveys. Your response to our survey questions will help us measure product satisfaction for features released in this major update and help us refine our plans for our next major release.

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How to: Provide Hierarchical Data to a Tree Map

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

<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>