windowsforms-devexpress-dot-xtratreemap-dot-sunburstflatdataadapter.md
Gets or sets the name of the data field whose values are used to generate SunburstItem.Value values.
Namespace : DevExpress.XtraTreeMap
Assembly : DevExpress.XtraTreeMap.v25.2.dll
NuGet Package : DevExpress.TreeMap
[DefaultValue("")]
[XtraSerializableProperty]
public string ValueDataMember { get; set; }
<DefaultValue("")>
<XtraSerializableProperty>
Public Property ValueDataMember As String
| Type | Default | Description |
|---|---|---|
| String | String.Empty |
A String value.
|
This example demonstrates how to visualize flat data using the SunburstControl.
Create a SunburstFlatDataAdapter object and assign it to the SunburstControl.DataAdapter property to provide flat data to the Sunburst. Then, specify the adapter’s SunburstFlatDataAdapter.DataSource, SunburstFlatDataAdapter.LabelDataMember and SunburstFlatDataAdapter.ValueDataMember to define data source members that should be used to generate sunburst items. Add data members to the SunburstFlatDataAdapter.GroupDataMembers collection to specify how to group the sunburst’s items.
private void OnLoad(object sender, EventArgs e) {
SunburstFlatDataAdapter dataAdapter = new SunburstFlatDataAdapter();
dataAdapter.ValueDataMember = "Annual";
dataAdapter.LabelDataMember = "Product";
dataAdapter.GroupDataMembers.AddRange(new string[] { "Category", "Country" });
dataAdapter.DataSource = CreateProductInfos();
sunburstControl.DataAdapter = dataAdapter;
}
Class SurroundingClass
Private Sub OnLoad(ByVal sender As Object, ByVal e As EventArgs)
Dim dataAdapter As SunburstFlatDataAdapter = New SunburstFlatDataAdapter()
dataAdapter.ValueDataMember = "Annual"
dataAdapter.LabelDataMember = "Product"
dataAdapter.GroupDataMembers.AddRange(New String() {"Category", "Country"})
dataAdapter.DataSource = CreateProductInfos()
sunburstControl.DataAdapter = dataAdapter
End Sub
End Class
The following code snippet (auto-collected from DevExpress Examples) contains a reference to the ValueDataMember 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.
sunburst.Colorizer = null;
dataAdapter.DataSource = dataAdapter.ValueDataMember = dataAdapter.LabelDataMember = null;
dataAdapter.GroupDataMembers.Clear();
dataAdapter.LabelDataMember = Nothing
dataAdapter.ValueDataMember = dataAdapter.LabelDataMember
dataAdapter.DataSource = dataAdapter.ValueDataMember
See Also