1.从ORACLE表中加载图层的问题。。。MIConnection Connection=new MIConnection();Connection.Open();TableInfoServer tis1=new TableInfoServer("WORLD", "SRVR=ora8i;UID=wzz;PWD=11111111", "select * from world",MapInfo.Data.ServerToolkit.Oci);MapInfo.Data.Table [] tables=new MapInfo.Data.Table[2];tables[0]=Connection.Catalog.OpenTable(tis1); TableInfoServer tis2=new TableInfoServer("WORLDCAP", "SRVR=ora8i;UID=wzz;PWD=11111111", "select * from worldcap",MapInfo.Data.ServerToolkit.Oci);tables[1]=Connection.Catalog.OpenTable(tis2);MapControl1.Map.Load(new MapInfo.Mapping.MapTableLoader(tables));
2.存在SqlSever中XY坐标点的绑定代码//XY绑定:含有x,y坐标点的图层放置在Sql Server数据库中，按xy坐标生成点图层//1.要在存在该表的数据库中建立MAPINFO_MAPCATALOG表，否则会报错：//"An unhandled exception of type 'MapInfo.Data.TableException' occurred in mapinfo.coreengine.dll.//Additional information: 不能打开表。 ODBC 错误: ODBC RC=-1, ODBC SQLState=S0002, DBMS RC=208, DBMS Msg=[Microsoft][ODBC SQL Server Driver][SQL Server]对象名 'MAPINFO.MAPINFO_MAPCATALOG' 无效。//2.要含xy坐标点的表建立主键，否则会报错：//"Additional information: 不能打开表。因为不能识别唯一键，不能访问远程数据。"
//建立XY空间方案 MapInfo.Data.SpatialSchemaXY xy = new MapInfo.Data.SpatialSchemaXY(); xy.XColumn = "X"; xy.YColumn = "Y"; xy.NullPoint = "0.0, 0.0"; xy.StyleType = MapInfo.Data.StyleType.None; xy.DefaultStyle = new MapInfo.Styles.CompositeStyle(); xy.CoordSys = MapInfo.Engine.Session.Current.CoordSysFactory.CreateLongLat(MapInfo.Geometry.DatumID.WGS84);
//建立TableInfo MapInfo.Data.TableInfoServer ti = new MapInfo.Data.TableInfoServer("Customers","Driver={SQL Server};Server=LIXIAOHUI;Database=test;Uid=sa;Pwd=sa;","select * from Us_Cust",MapInfo.Data.ServerToolkit.Odbc); ti.SpatialSchema = xy; MapInfo.Data.Table miCustomers = MapInfo.Engine.Session.Current.Catalog.OpenTable (ti); MapInfo.Mapping.FeatureLayer featureLayer = new MapInfo.Mapping.FeatureLayer(miCustomers); mapControl1.Map.Layers.Add(featureLayer); mapControl1.Map.SetView(featureLayer);
3.如何查看整个地图Map map = mapControl1.Map;IMapLayerFilter lyrFilter = MapLayerFilterFactory.FilterByType(typeof(FeatureLayer));MapLayerEnumerator lyrEnum= map.Layers.GetMapLayerEnumerator(lyrFilter);map.SetView(lyrEnum);或者: Map map = mapControl1.Map; IMapLayerFilter lyrFilter = new FilterByLayerType(LayerType.Normal); MapLayerEnumerator lyrEnum= map.Layers.GetMapLayerEnumerator(lyrFilter); map.SetView(lyrEnum);
