使用C#开发MapXtreme项目，如何设置标绘的图元可见和不可见？

/// <param name="tempLayerTableName">表名</param>

/// <param name="tempLayerName">图层名</param>

/// <param name="dPoint">点坐标</param>

 public void AddPointToLayer(string tempLayerTableName, string tempLayerName, DPoint dPoint)

        {

            MapInfo.Mapping.Map myMap = MapInfo.Engine.Session.Current.MapFactory[ControlMap.Map.Alias];

            //获取图层和表

            FeatureLayer workLayer = (MapInfo.Mapping.FeatureLayer)myMap.Layers[tempLayerName];

            MapInfo.Data.Table tblTemp = MapInfo.Engine.Session.Current.Catalog.GetTable(tempLayerTableName);

            //创建点图元及其样式

            FeatureGeometry pgPoint = new MapInfo.Geometry.Point(workLayer.CoordSys, dPoint);

            MapInfo.Styles.SimpleVectorPointStyle spsPoint = new MapInfo.Styles.SimpleVectorPointStyle(37, System.Drawing.Color.Red, 20);

            MapInfo.Styles.CompositeStyle csPoint = new MapInfo.Styles.CompositeStyle(spsPoint);

            MapInfo.Data.Feature ptPoint = new MapInfo.Data.Feature(tblTemp.TableInfo.Columns);

            ptPoint.Geometry = pgPoint;

            ptPoint.Style = csPoint;

            ptPoint["index"] = 1;

            ptPoint["name"] = "PointName";

            //将点图元加入图层

            workLayer.Table.InsertFeature(ptPoint);

        }

 

/// <param name="tempLayerTableName">表名</param>

/// <param name="tempLayerName">图层名</param>

/// <param name="startPoint">线段起点坐标</param>

/// <param name="endPoint">线段终点坐标</param>

public void AddLineToLayer(string tempLayerTableName, string tempLayerName, DPoint startPoint, DPoint endPoint)

        {

                MapInfo.Mapping.Map myMap = MapInfo.Engine.Session.Current.MapFactory[ControlMap.Map.Alias];

                //获取图层和表

                FeatureLayer workLayer = (MapInfo.Mapping.FeatureLayer)myMap.Layers[tempLayerName];

                MapInfo.Data.Table tblTemp = MapInfo.Engine.Session.Current.Catalog.GetTable(tempLayerTableName);

                //创建线图元及其样式

                FeatureGeometry pgLine = MultiCurve.CreateLine(workLayer.CoordSys, startPoint, endPoint);

                MapInfo.Styles.SimpleLineStyle slsLine = new MapInfo.Styles.SimpleLineStyle(new LineWidth(3, LineWidthUnit.Pixel), 2, System.Drawing.Color.OrangeRed);

                MapInfo.Styles.CompositeStyle csLine = new MapInfo.Styles.CompositeStyle(slsLine);

                MapInfo.Data.Feature ptLine = new MapInfo.Data.Feature(tblTemp.TableInfo.Columns);

                ptLine.Geometry = pgLine;

                ptLine.Style = csLine;

                ptLine["index"] = 2;

                ptLine["name"] = "LineName";

                //将线图元加入图层

                workLayer.Table.InsertFeature(ptLine);

        }

补充：.NET技术 ,  C#

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