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

{
    var featureLayerCreationParams = new FeatureLayerCreationParams(new Uri(@"c:\data\countydata.gdb\counties"))
    {
        Name = "Population Density (sq mi) Year 2010",
        RendererDefinition = new GraduatedColorsRendererDefinition("POP10_SQMI")
    };
    LayerFactory.Instance.CreateLayer<FeatureLayer>(
      featureLayerCreationParams,
      MapView.Active.Map
    );
}

{
    string colorBrewerSchemesName = "ColorBrewer Schemes (RGB)";
    StyleProjectItem colorBrewerStyle = Project.Current.GetItems<StyleProjectItem>().First(s => s.Name == colorBrewerSchemesName);
    string colorRampName = "Greens (Continuous)";
    //Note: Needs QueuedTask to run
    IList<ColorRampStyleItem> colorRampListFromTheStyle = colorBrewerStyle.SearchColorRamps(colorRampName);

    ColorRampStyleItem colorRampFound = colorRampList[0];
    GraduatedColorsRendererDefinition gcDef = new GraduatedColorsRendererDefinition()
    {
        ClassificationField = "CROP_ACR07",
        ClassificationMethod = ArcGIS.Core.CIM.ClassificationMethod.NaturalBreaks,
        BreakCount = 6,
        ColorRamp = colorRampFound.ColorRamp,
        SymbolTemplate = SymbolFactory.Instance.ConstructPolygonSymbol(
                              ColorFactory.Instance.GreenRGB, SimpleFillStyle.Solid, null).MakeSymbolReference(),
        ExclusionClause = "CROP_ACR07 = -99",
        ExclusionSymbol = SymbolFactory.Instance.ConstructPolygonSymbol(
                              ColorFactory.Instance.RedRGB, SimpleFillStyle.Solid, null).MakeSymbolReference(),
        ExclusionLabel = "No yield",
    };
    var featureLayerCreationParams = new FeatureLayerCreationParams((new Uri(@"c:\Data\CountyData.gdb\Counties")))
    {
        Name = "Crop",
        RendererDefinition = gcDef
    };
    //Note: Needs QueuedTask to run
    LayerFactory.Instance.CreateLayer<FeatureLayer>(featureLayerCreationParams, MapView.Active.Map);
}

{
  // applies to TIN layers only
  var defiendIntervalNodeRendererDef = new TinNodeClassBreaksRendererDefinition();
  defiendIntervalNodeRendererDef.ClassificationMethod = ClassificationMethod.DefinedInterval;
  defiendIntervalNodeRendererDef.IntervalSize = 4;
  defiendIntervalNodeRendererDef.SymbolTemplate = nodeSymbol.MakeSymbolReference();
  // Note: Needs QueuedTask to run
  {
    if (tinLayer.CanCreateRenderer(defiendIntervalNodeRendererDef))
    {
      CIMTinRenderer renderer = tinLayer.CreateRenderer(defiendIntervalNodeRendererDef);
      if (tinLayer.CanSetRenderer(renderer, SurfaceRendererTarget.Edges))
        tinLayer.SetRenderer(renderer, SurfaceRendererTarget.Edges);
    }
  }
}

{
  // applies to TIN layers only
  var stdDevNodeRendererDef = new TinNodeClassBreaksRendererDefinition();
  stdDevNodeRendererDef.ClassificationMethod = ClassificationMethod.StandardDeviation;
  stdDevNodeRendererDef.DeviationInterval = StandardDeviationInterval.OneHalf;
  stdDevNodeRendererDef.ColorRamp = ColorFactory.Instance.GetColorRamp("Cyan to Purple");
  // Note: Needs QueuedTask to run
  {
    if (tinLayer.CanCreateRenderer(stdDevNodeRendererDef))
    {
      CIMTinRenderer renderer = tinLayer.CreateRenderer(stdDevNodeRendererDef);
      if (tinLayer.CanSetRenderer(renderer, SurfaceRendererTarget.Edges))
        tinLayer.SetRenderer(renderer, SurfaceRendererTarget.Edges);
    }
  }
}

{
  var slopeFaceClassBreaksQuantile = new TinFaceClassBreaksRendererDefinition(TerrainDrawCursorType.FaceSlope);
  slopeFaceClassBreaksQuantile.ClassificationMethod = ClassificationMethod.Quantile;
  // accept default breakCount, symbolTemplate, color ramp
  // Note: Needs QueuedTask to run
  {
    if (surfaceLayer.CanCreateRenderer(slopeFaceClassBreaksQuantile))
    {
      CIMTinRenderer renderer = surfaceLayer.CreateRenderer(slopeFaceClassBreaksQuantile);
      if (surfaceLayer.CanSetRenderer(renderer, SurfaceRendererTarget.Surface))
        surfaceLayer.SetRenderer(renderer, SurfaceRendererTarget.Surface);
    }
  }
}

{
  var lasPointsClassBreaksRendererDef = new LasPointClassBreaksRendererDefinition();
  lasPointsClassBreaksRendererDef.ClassificationMethod = ClassificationMethod.NaturalBreaks;
  lasPointsClassBreaksRendererDef.ModulateUsingIntensity = true;
  // increase the symbol size by a factor
  lasPointsClassBreaksRendererDef.SymbolScaleFactor = 1.0;
  // Note: Needs QueuedTask to run
  {
    if (lasDatasetLayer.CanCreateRenderer(lasPointsClassBreaksRendererDef))
    {
      CIMTinRenderer renderer = lasDatasetLayer.CreateRenderer(lasPointsClassBreaksRendererDef);
      if (lasDatasetLayer.CanSetRenderer(renderer, SurfaceRendererTarget.Points))
        lasDatasetLayer.SetRenderer(renderer, SurfaceRendererTarget.Points);
    }
  }
}