TreeMapFlatDataAdapter.LabelDataMember Property
Gets or sets the name of the data field whose values are used to automatically generate TreeMapItem.Label values.
Namespace: DevExpress.Xpf.TreeMap
Assembly: DevExpress.Xpf.TreeMap.v20.2.dll
NuGet Packages: DevExpress.WindowsDesktop.Wpf.TreeMap, DevExpress.Wpf.TreeMap
Declaration
Property Value
Type | Description |
---|---|
String | A String value. |
Example
To provide flat data to the Tree Map, perform the following steps.
- Assign a new TreeMapFlatDataAdapter object to the TreeMapControl.DataAdapter property.
- Specify the adapter’s TreeMapFlatDataAdapter.DataSource,
TreeMapFlatDataAdapter.LabelDataMember
and TreeMapFlatDataAdapter.ValueDataMember properties. - Optionally, to group automatically generated tree map items, add the TreeMapGroupDefinition to the TreeMapFlatDataAdapter.Groups collection, and specify the definition’s TreeMapGroupDefinition.GroupDataMember and TreeMapGroupDefinition.HeaderContentTemplate properties.
<Window.Resources>
<XmlDataProvider
x:Key="gdpDataSource"
Source="Data/top10gdp.xml"/>
<DataTemplate
x:Key="headerTemplate">
<Border
BorderBrush="#606060"
BorderThickness="1"
Margin="4,4,4,-4">
<TextBlock
Padding="6,2,0,2"
Text="{Binding Label}"
Background="#808080"
Foreground="White"/>
</Border>
</DataTemplate>
</Window.Resources>
<Grid>
<dxtm:TreeMapControl>
<dxtm:TreeMapControl.Colorizer>
<dxtm:TreeMapPaletteColorizer>
<dxtm:Office2016Palette/>
</dxtm:TreeMapPaletteColorizer>
</dxtm:TreeMapControl.Colorizer>
<dxtm:TreeMapFlatDataAdapter
DataSource="{Binding Source={StaticResource gdpDataSource}}"
DataMember="Country"
LabelDataMember="Name"
ValueDataMember="Gdp">
<dxtm:TreeMapFlatDataAdapter.Groups>
<dxtm:GroupDefinitionCollection>
<dxtm:TreeMapGroupDefinition
GroupDataMember="SideOfWorld"
HeaderContentTemplate="{Binding Source={StaticResource headerTemplate}}"/>
</dxtm:GroupDefinitionCollection>
</dxtm:TreeMapFlatDataAdapter.Groups>
</dxtm:TreeMapFlatDataAdapter>
</dxtm:TreeMapControl>
</Grid>
Related GitHub Examples
The following code snippet (auto-collected from DevExpress Examples) contains a reference to the LabelDataMember property.
Note
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