图层标注(C#)

       /// <summary>
        /// (重载)图层标注
        /// </summary>
        /// <param name="pFeaturelayer">标注图层</param>
        /// <param name="sLableField">标注字段</param>
        /// <param name="pRGB">颜色</param>
        /// <param name="size">大小</param>
        public static void FunLabelFeatureLayer(IFeatureLayer pFeaturelayer, string sLableField, IRgbColor pRGB, int size)
        {
            if (pFeaturelayer == null)
                return;
            IGeoFeatureLayer pGeoFeaturelayer = (IGeoFeatureLayer)pFeaturelayer;
            IAnnotateLayerPropertiesCollection pAnnoLayerPropsCollection;
            pAnnoLayerPropsCollection = pGeoFeaturelayer.AnnotationProperties;
            pAnnoLayerPropsCollection.Clear();

            //stdole.IFontDisp  pFont; //字体
            ITextSymbol pTextSymbol;

            //pFont.Name = "新宋体";
            //pFont.Size = 9;
            if (pRGB == null)
            {
                pRGB = new RgbColorClass();
                pRGB.Red = 0;
                pRGB.Green = 0;
                pRGB.Blue = 0;
            }

            pTextSymbol = new TextSymbolClass();
            pTextSymbol.Color = (IColor)pRGB;
            pTextSymbol.Size = size;

            IBasicOverposterLayerProperties pBasicOverposterlayerProps = new BasicOverposterLayerPropertiesClass();
            switch (pFeaturelayer.FeatureClass.ShapeType)
            {
                case ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryPolygon:
                    pBasicOverposterlayerProps.FeatureType = esriBasicOverposterFeatureType.esriOverposterPolygon;
                    break;
                case ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryPoint:
                    pBasicOverposterlayerProps.FeatureType = esriBasicOverposterFeatureType.esriOverposterPoint;
                    break;
                case ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryPolyline:
                    pBasicOverposterlayerProps.FeatureType = esriBasicOverposterFeatureType.esriOverposterPolyline;
                    break;
            }

            ILabelEngineLayerProperties pLabelEnginelayerProps = new LabelEngineLayerPropertiesClass();
            pLabelEnginelayerProps.Expression = "[" + sLableField + "]";
            pLabelEnginelayerProps.Symbol = pTextSymbol;
            pLabelEnginelayerProps.BasicOverposterLayerProperties = pBasicOverposterlayerProps;

            pAnnoLayerPropsCollection.Add((IAnnotateLayerProperties)pLabelEnginelayerProps);
            pGeoFeaturelayer.DisplayAnnotation = true;
            //axMapControl1.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewBackground, null, null);
        }