创建临时图层-添加图元-加图层标注-清除图元

操作实体类：

public class map_operation
    {

        public MapControlModel model;

        public MapInfo.Mapping.Map map;

        public Catalog Cat;

        public MapInfo.Data.Table tblTemp;

        public map_operation()
        {

             model = MapControlModel.GetModelFromSession();

             map = model.GetMapObj("Map1");

             Cat = MapInfo.Engine.Session.Current.Catalog;

             tblTemp = Cat.GetTable("Animation");

    
       }

 

//创建临时图层

        public void creat_temp_table()
        {

            TableInfoMemTable tblInfoTemp = new TableInfoMemTable("Animation");   //创建GPS终端小车集图层

             if (tblTemp != null) //Table exists close it
            {

                Cat.CloseTable("Animation");

            }

            tblInfoTemp.Columns.Add(ColumnFactory.CreateFeatureGeometryColumn(map.GetDisplayCoordSys()));

            tblInfoTemp.Columns.Add(ColumnFactory.CreateStyleColumn());

            tblInfoTemp.Columns.Add(ColumnFactory.CreateStringColumn("Name", 40));

            tblInfoTemp.Columns.Add(ColumnFactory.CreateStringColumn("Dept", 15));

            tblInfoTemp.Columns.Add(ColumnFactory.CreateIntColumn("Level"));

            tblTemp = Cat.CreateTable(tblInfoTemp);

            FeatureLayer lyr = new FeatureLayer(tblTemp);

            map.Layers.Add(lyr);
        
        
        }

 

//添加图元

        public void insert_feature(string fileName,double x,double y,string GPS_NUMBER)
        {

          BitmapPointStyle bStyle = new BitmapPointStyle(fileName);    //fileName格式为@"gpscar2_p2.bmp" 这个@代表C:\Program Files\Common Files\MapInfo\MapXtreme\6.7.1\CustSymb

            bStyle.PointSize = Convert.ToInt16(24);

            bStyle.NativeSize = true;

            bStyle.Attributes = StyleAttributes.PointAttributes.BaseAll;

            bStyle.SetApplyAll();

            FeatureGeometry pt = new MapInfo.Geometry.Point(map.GetDisplayCoordSys(), new DPoint(y, x)) as FeatureGeometry;

            Feature ftr = new Feature(tblTemp.TableInfo.Columns);

            ftr.Geometry = pt;                   //图元地理位置设置

            ftr.Style = bStyle;                      //图元为位图样式

            ftr["Name"] = "aaaa";

            ftr["Dept"] = GPS_NUMBER;    //GPS终端号

            ftr["Level"] = 2;

            tblTemp.InsertFeature(ftr);          //插入图元
       

        }

 

//加图层标注

        public void creat_mark()
        {

            MapInfo.Data.Table tblTemp = Cat.GetTable("Animation");

            LabelSource labelSource = new LabelSource(tblTemp);   //给所创建的临时表Animation中的图元加标注

            //指定要标准字段所在的列
            labelSource.DefaultLabelProperties.Caption = "Name";     //所要标注的列名

            labelSource.DefaultLabelProperties.Layout.Offset = 8;    //标注偏移

            labelSource.DefaultLabelProperties.Layout.Alignment = MapInfo.Text.Alignment.TopRight;//标注对齐方式

            labelSource.DefaultLabelProperties.Style.Font.BackColor = System.Drawing.Color.White;        //字体背景

            labelSource.DefaultLabelProperties.Style.Font.ForeColor = System.Drawing.Color.Red;          //字体颜色

            labelSource.DefaultLabelProperties.Style.Font.TextEffect = MapInfo.Styles.TextEffect.Box;    //边缘效果

            labelSource.DefaultLabelProperties.Style.Font.FontWeight = MapInfo.Styles.FontWeight.Bold;   //粗体

            MapInfo.Styles.SimpleLineStyle simpleLineStyle = new MapInfo.Styles.SimpleLineStyle(0);      //标注注释线

            labelSource.DefaultLabelProperties.Style.CalloutLine.ApplyStyle(simpleLineStyle);

                                                                                                                //取消标注注释线

            LabelLayer labelLayer = new LabelLayer();

            labelLayer.Name = "jcbz";                                                          //设置标注图层的名称

            labelLayer.Sources.Append(labelSource);                                   //往地图中加入该标注层

            map.Layers.Add(labelLayer);

        }

//清除临时图层中所有的图元

public void clear_feature()
        {

            SearchInfo si = MapInfo.Data.SearchInfoFactory.SearchWhere("");

            IResultSetFeatureCollection ifs;

            MapInfo.Data.Table Tm;

            Tm = Cat.GetTable("Tm");

            if (Tm != null) //Table exists close it
            {
                si = MapInfo.Data.SearchInfoFactory.SearchWhere("");

                ifs = MapInfo.Engine.Session.Current.Catalog.Search("Tm", si);

                foreach (Feature ft in ifs)

                    Tm.DeleteFeature(ft);                           //删除所有该图层上的图元

            }

        
        }

    }