Engine10.1中如何实现自定义的渲染，Custom Feature Renderer

 private void ReaderWithParameter(IFeatureLayer pFeatureLayer,IRgbColor FColor,IRgbColor OLColor, double size)

        {

            //定义一个线符号

            if (OLColor == null)

            {

                OLColor = new RgbColorClass();

                OLColor = getRGB(255, 0, 0);

            }

            ILineSymbol pLineSymbol = new SimpleLineSymbolClass();

            pLineSymbol.Color = OLColor as IColor;

            pLineSymbol.Width = size;                    



            //定义一个填充符合

            if (FColor == null)

            {

                FColor = new RgbColorClass();

                FColor.NullColor = true;

            } 

            IFillSymbol pFillSymbol = new SimpleFillSymbolClass();

            pFillSymbol.Color = FColor as IColor;            

            pFillSymbol.Outline = pLineSymbol;  

           



            IGeoFeatureLayer geoFeatureLayer = (IGeoFeatureLayer)pFeatureLayer;

            ISimpleRenderer simpleRenderer = (ISimpleRenderer)geoFeatureLayer.Renderer;

            simpleRenderer.Symbol = pFillSymbol as ISymbol;

  

        

                        

        }