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);

        }

 

        public void EnableFeatureLayerLabel(IFeatureLayer pFeaturelayer, string sLableField, IRgbColor pRGB, int size, string angleField)
        {
            //判断图层是否为空
            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;
            //未指定字体颜色则默认为黑色
            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; //标注大小

            IBasicOverposterLayerProperties4 pBasicOverposterlayerProps4 = new BasicOverposterLayerPropertiesClass();
            switch (pFeaturelayer.FeatureClass.ShapeType)//判断图层类型
            {
                case ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryPolygon:
                    pBasicOverposterlayerProps4.FeatureType = esriBasicOverposterFeatureType.esriOverposterPolygon;
                    break;
                case ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryPoint:
                    pBasicOverposterlayerProps4.FeatureType = esriBasicOverposterFeatureType.esriOverposterPoint;
                    break;
                case ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryPolyline:
                    pBasicOverposterlayerProps4.FeatureType = esriBasicOverposterFeatureType.esriOverposterPolyline;
                    break;
            } 
            pBasicOverposterlayerProps4.PointPlacementMethod = esriOverposterPointPlacementMethod.esriRotationField;
            pBasicOverposterlayerProps4.RotationField = angleField;

            ILabelEngineLayerProperties pLabelEnginelayerProps = new LabelEngineLayerPropertiesClass(); 
            pLabelEnginelayerProps.Expression = "[" + sLableField + "]";
            pLabelEnginelayerProps.Symbol = pTextSymbol;
            pLabelEnginelayerProps.BasicOverposterLayerProperties = pBasicOverposterlayerProps4 as IBasicOverposterLayerProperties;
            pAnnoLayerPropsCollection.Add((IAnnotateLayerProperties)pLabelEnginelayerProps);
            pGeoFeaturelayer.DisplayAnnotation = true;//很重要，必须设置 
            //axMapControl1.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewBackground, null, null); }
        }