UniqueValueRendererDefinition Class
Represents unique value renderer definition to apply a different symbol to each category of feature within the layer based on one or more fields.
Set unique value renderer to the selected feature layer of the active map
await QueuedTask.Run(() =>
{
var fields = new List<string> { "Type" }; //field to be used to retrieve unique values
CIMPointSymbol pointSym = SymbolFactory.Instance.ConstructPointSymbol(
ColorFactory.Instance.GreenRGB, 16.0, SimpleMarkerStyle.Pushpin); //constructing a point symbol as a template symbol
CIMSymbolReference symbolPointTemplate = pointSym.MakeSymbolReference();
//constructing renderer definition for unique value renderer
UniqueValueRendererDefinition uniqueValueRendererDef =
new UniqueValueRendererDefinition(fields, symbolPointTemplate);
//creating a unique value renderer
var flyr = MapView.Active.GetSelectedLayers()[0] as FeatureLayer;
CIMUniqueValueRenderer uniqueValueRenderer = flyr.CreateRenderer(uniqueValueRendererDef) as CIMUniqueValueRenderer;
//setting the renderer to the feature layer
flyr.SetRenderer(uniqueValueRenderer);
});
Defining a unique value renderer definition
var uvrDef = new UniqueValueRendererDefinition()
{
ValueFields = new List<string> { "ACTYPE" },
SymbolTemplate = SymbolFactory.Instance.ConstructPointSymbol(
ColorFactory.Instance.RedRGB, 10, SimpleMarkerStyle.Hexagon)
.MakeSymbolReference(),
ValuesLimit = 5
};
//Note: CreateRenderer can only create value classes based on
//the current events it has received
streamLayer.SetRenderer(streamLayer.CreateRenderer(uvrDef));
Target Platforms: Windows 11, Windows 10
ArcGIS Pro version: 3 or higher.