SunburstHierarchicalDataAdapter Class

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

Namespace: DevExpress.XtraTreeMap

Assembly: DevExpress.XtraTreeMap.v19.2.dll

Declaration

C#

public class SunburstHierarchicalDataAdapter :
    SunburstDataAdapterBase

VB.NET

Public Class SunburstHierarchicalDataAdapter
    Inherits SunburstDataAdapterBase

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.

Note

A complete sample project is available at How to: provide hierarchical data to Sunburst.

C#

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;
}

VB.NET

Private Sub OnFormLoad(ByVal sender As Object, ByVal e As EventArgs)
    Dim dataAdapter As SunburstHierarchicalDataAdapter = New SunburstHierarchicalDataAdapter()
    dataAdapter.Mappings.Add(New SunburstHierarchicalDataMapping With {
        .Type = GetType(CountryInfo),
        .LabelDataMember = "CountryName",
        .ChildrenDataMember = "CityInfos"
    })
    dataAdapter.Mappings.Add(New SunburstHierarchicalDataMapping With {
        .Type = GetType(CityInfo),
        .LabelDataMember = "CityName",
        .ChildrenDataMember = "SaleInfos"
    })
    dataAdapter.Mappings.Add(New SunburstHierarchicalDataMapping With {
        .Type = GetType(ProductInfo),
        .ValueDataMember = "Total",
        .LabelDataMember = "Category"
    })
    dataAdapter.DataSource = CreateInfos()
    sunburstControl.DataAdapter = dataAdapter
End Sub

Implements

ISunburstDataAdapter

Inheritance

Object

DevExpress.XtraTreeMap.HierarchicalElement

SunburstElement

SunburstDataAdapterBase

SunburstHierarchicalDataAdapter