TreeMapHierarchicalDataAdapter.DataSource Property

Gets or sets the object that is the data source of the data adapter.

Namespace: DevExpress.Xpf.TreeMap

Assembly: DevExpress.Xpf.TreeMap.v18.2.dll

Declaration

C#

public object DataSource { get; set; }

VB.NET

Public Property DataSource As Object

Property Value

Type	Description
Object	A Object that is the data source.

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.

Note

A complete sample project is available at https://github.com/DevExpress-Examples/how-to-provide-hierarchical-data-to-the-tree-map-t308576.

MainWindow.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>

Related GitHub Examples

The following code snippet (auto-collected from DevExpress Examples) contains a reference to the DataSource property.

Note

The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.

C#

how-to-provide-hierarchical-data-to-the-tree-map-t308576/VB/TreeMapHierarchicalDataAdapterSample/MainWindow.xaml#L46

<dxtm:TreeMapHierarchicalDataAdapter
    DataSource="{Binding}"
    ValueDataMember="Gdp">