NoData: String;
The NoData property determines the label format for the No Data element.
Executing the example requires a form, a button named Button1 on the form, the UiMap component named UiMap1 that is a data source for the MapBox component. The UiMap1 component must have a connected map that contains a map indicator only.
Sub Button1OnClick(Sender: Object; Args: IMouseEventArgs);
Var
Map: IMap;
Layer: IMapLayer;
Legend: IMapLegend;
Label: IMapLegendLabelFormat;
Begin
Map := UiMap1.Map;
Legend := New DxMapLegend.Create As IMapLegend;
Map.View.Legend := Legend;
Legend.Visible := True;
Legend.BeginUpdate;
Layer := Map.Layers.FindByName("Regions");
Legend.Visual := Layer.Visuals.Item(0);
Legend.IncludeEquals:=True;
Label := Legend.LabelFormat;
Label.Less := "< %value";
Label.Equal := "= %value";
Label.Between := "( %min, %max)";
Label.Greater := "> %value";
Label.NoData := "No data";
Legend.EndUpdate;
End Sub Button1OnClick;
After executing the example the legend is displayed for the map indicator. The legend label format is changed:
See also: