StyleItemType Enumeration

C#
Visual Basic (Declaration)

public enum StyleItemType : System.Enum, System.IComparable, System.IConvertible, System.IFormattable, System.ISpanFormattable

Public Enum StyleItemType 
   Inherits System.Enum
   Implements System.IComparable, System.IConvertible, System.IFormattable, System.ISpanFormattable

Member	Description
AreaLegendPatch	An area legend patch, small rectangles used to display legend classes.
Color	A single color defined by values in a supported color model.
ColorRamp	An array of colors in a specified pattern or scheme.
DimensionStyle	A style used to draw Dimension features.
Grid	A grid layout element.
Legend	A legend layout element.
LegendItem	A legend item layout element.
LineLegendPatch	A line legend patch, small lines used to display legend classes
LineSymbol	A symbol to draw line features.
MaplexLabelPlacement	A set of rules based on the Maplex label engine determining how labels will be placed in relation to features.
MapSurround	A map surround layout element (excludes surrounds with their own type e.g. North Arrow).
MeshSymbol	A symbol to draw multipatch features.
NorthArrow	A directional layout element used to indicate north orientation.
PointSymbol	A symbol to draw point features.
PolygonSymbol	A symbol to draw polygon features.
ScaleBar	A layout element that graphically indicates map scale.
StandardLabelPlacement	A set of rules based on the standard label engine determining how labels will be placed in relation to features.
TableFrame	A table frame layout element.
TableFrameField	A table frame field layout element.
TextSymbol	A symbol to draw labels or annotation features.
Unknown	A generic, unspecified style item.

StyleItem class.

Create Line Element

C#

//Must be on QueuedTask.Run(() => { ...

//Build geometry
List<Coordinate2D> plCoords = new List<Coordinate2D>();
plCoords.Add(new Coordinate2D(1, 8.5));
plCoords.Add(new Coordinate2D(1.66, 9));
plCoords.Add(new Coordinate2D(2.33, 8.1));
plCoords.Add(new Coordinate2D(3, 8.5));
Polyline linePl = PolylineBuilderEx.CreatePolyline(plCoords);

//Reference a line symbol in a style
var ProjectStyles = Project.Current.GetItems<StyleProjectItem>();
StyleProjectItem style = ProjectStyles.First(x => x.Name == "ArcGIS 2D");
var symStyle = style.SearchSymbols(StyleItemType.LineSymbol, "Line with 2 Markers")[0];
CIMLineSymbol lineSym = symStyle.Symbol as CIMLineSymbol;
lineSym.SetSize(20);

//Set symbology, create and add element to layout
//CIMLineSymbol lineSym = SymbolFactory.Instance.ConstructLineSymbol(ColorFactory.Instance.BlueRGB, 4.0, SimpleLineStyle.Solid);
ElementFactory.Instance.CreateGraphicElement(
  container, linePl, lineSym, "New Line");

Create Point Element

C#

//Must be on QueuedTask.Run(() => { ...

//Build geometry
Coordinate2D coord2D = new Coordinate2D(2.0, 10.0);

//Reference a point symbol in a style
StyleProjectItem stylePrjItm = Project.Current.GetItems<StyleProjectItem>()
         .FirstOrDefault(item => item.Name == "ArcGIS 2D");
SymbolStyleItem symStyleItm = stylePrjItm.SearchSymbols(
                      StyleItemType.PointSymbol, "City Hall")[0];
CIMPointSymbol pointSym = symStyleItm.Symbol as CIMPointSymbol;
pointSym.SetSize(50);

var elemInfo = new ElementInfo()
{
  CustomProperties = new List<CIMStringMap>() {
     new CIMStringMap() { Key = "Key1", Value = "Value1"},
     new CIMStringMap() { Key = "Key2", Value = "Value2"}
   },
  Anchor = Anchor.TopRightCorner,
  Rotation = 45.0
};

var graphic = GraphicFactory.Instance.CreateSimpleGraphic(
                              coord2D.ToMapPoint(), pointSym);

ElementFactory.Instance.CreateGraphicElement(
  container, graphic, "New Point", true, elemInfo);

How to apply a point symbol from a style to a feature layer

C#

  // var map = MapView.Active.Map;
  // if (map == null)
  //        return;
  // var pointFeatureLayer =
  //       map.GetLayersAsFlattenedList()
  //          .OfType<FeatureLayer>()
  //         .Where(fl => fl.ShapeType == esriGeometryType.esriGeometryPoint);
  //   await ApplySymbolToFeatureLayerAsync(pointFeatureLayer.FirstOrDefault(), "Fire Station");

  public Task ApplySymbolToFeatureLayerAsync(FeatureLayer featureLayer, string symbolName)
  {
    return QueuedTask.Run(async () =>
    {
      //Get the ArcGIS 2D System style from the Project
      var arcGIS2DStyle =
Project.Current.GetItems<StyleProjectItem>().FirstOrDefault(s => s.Name == "ArcGIS 2D");

      //Search for the symbolName style items within the ArcGIS 2D style project item.
      var items = await QueuedTask.Run(() =>
      arcGIS2DStyle.SearchSymbols(StyleItemType.PointSymbol, symbolName));

      //Gets the CIMSymbol
      CIMSymbol symbol = items.FirstOrDefault().Symbol;

      //Get the renderer of the point feature layer
      CIMSimpleRenderer renderer = featureLayer.GetRenderer() as CIMSimpleRenderer;

      //Set symbol's real world setting to be the same as that of the feature layer
      symbol.SetRealWorldUnits(featureLayer.UsesRealWorldSymbolSizes);

      //Apply the symbol to the feature layer's current renderer
      renderer.Symbol = symbol.MakeSymbolReference();

      //Apply the renderer to the feature layer
      featureLayer.SetRenderer(renderer);
    });
  }

System.Object
   System.ValueType
      System.Enum
         ArcGIS.Desktop.Mapping.StyleItemType

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3 or higher.

Reference

ArcGIS.Desktop.Mapping Namespace