SunburstHierarchicalDataAdapter Class

A data adapter that allows you to provide hierarchical data to the SunburstControl.

Namespace: DevExpress.XtraTreeMap

Assembly: DevExpress.XtraTreeMap.v21.2.dll

Declaration

public class SunburstHierarchicalDataAdapter :
    SunburstDataAdapterBase,
    IGroupIndexProvider

Remarks

This class introduces the SunburstHierarchicalDataAdapter.DataSource property that allows you to specify the sunburst’s data source and the SunburstHierarchicalDataAdapter.Mappings collection that contains data mappings that specify how to convert data source objects to sunburst items.

Example

This example demonstrates how to visualize hierarchical data using the SunburstControl.

Create a SunburstHierarchicalDataAdapter object and assign it to the SunburstControl.DataAdapter property to provide hierarchical data to a Sunburst. Then, specify the adapter’s data source object using the SunburstHierarchicalDataAdapter.DataSource property. Populate the SunburstHierarchicalDataAdapter.Mappings collection with SunburstHierarchicalDataMapping objects to configure how the SunburstControl should convert hierarchical data to sunburst items. The HierarchicalDataMapping.LabelDataMember property allows you to specify a label data member, the HierarchicalDataMapping.ValueDataMember property - a value data member, the HierarchicalDataMapping.ChildrenDataMember property - a data member that contains children items and the HierarchicalDataMapping.Type property - types of items at the current level.

View Example: How to: provide hierarchical data to Sunburst

private void OnFormLoad(object sender, EventArgs e) {
    SunburstHierarchicalDataAdapter dataAdapter = new SunburstHierarchicalDataAdapter();
    dataAdapter.Mappings.Add(new SunburstHierarchicalDataMapping {
        Type = typeof(CountryInfo), 
        LabelDataMember = "CountryName",  
        ChildrenDataMember = "CityInfos"
    });
    dataAdapter.Mappings.Add(new SunburstHierarchicalDataMapping {
        Type = typeof(CityInfo),  
        LabelDataMember = "CityName",              
        ChildrenDataMember = "SaleInfos"
    });
    dataAdapter.Mappings.Add(new SunburstHierarchicalDataMapping {
        Type = typeof(ProductInfo),
        ValueDataMember = "Total",
        LabelDataMember = "Category",
    });
    dataAdapter.DataSource = CreateInfos();
    sunburstControl.DataAdapter = dataAdapter;
}

Inheritance

See Also