TreeMapFlatDataAdapter Class
The data adapter that provides flat data to a tree map.
Namespace: DevExpress.XtraTreeMap
Assembly: DevExpress.XtraTreeMap.v24.2.dll
Declaration
public class TreeMapFlatDataAdapter :
TreeMapDataAdapterBase,
IFlatDataAdapter,
IDataSourceProvider,
IGroupIndexProviderRemarks
This data adapter introduces the TreeMapFlatDataAdapter.DataSource property that allows you to specify the data source of the adapter, and the TreeMapFlatDataAdapter.DataMember, TreeMapFlatDataAdapter.LabelDataMember and TreeMapFlatDataAdapter.ValueDataMember properties, allowing you to specify the data members whose values are used as an item, item’s label and item’s value.
For more information about Data Adapters, refer to the Providing Data topic.
Example
To provide flat data to a TreeMap, create a TreeMapFlatDataAdapter object and assign it to the TreeMapControl.DataAdapter property. Then, specify the adapter’s TreeMapFlatDataAdapter.DataSource, TreeMapFlatDataAdapter.LabelDataMember and TreeMapFlatDataAdapter.ValueDataMember to configure the data source object and which data members should be used to generate tree map items. If you need to group generated items, add the name of a data member whose values should be used to group items, to the TreeMapFlatDataAdapter.GroupDataMembers collection.
void ConfigureTreeMapDataAdapter() {
TreeMapFlatDataAdapter adapter = new TreeMapFlatDataAdapter {
DataSource = CreateBillionaireInfos(),
LabelDataMember = "Name",
ValueDataMember = "NetWorth"
};
adapter.GroupDataMembers.Add("Residence");
treeMap.DataAdapter = adapter;
}