初探GIS Mapxtreme

1、数据加载

MapInfo.Mapping.MapLoader mapLoader=
　　　MapInfo.Mapping.MapLoader.CreateFromFile(@"F:\地图\hlj.gst");
mapLoader.Load(mapControl1.Map);

2、获取地图信息数据，显示ListBox中

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this.listBox1.Items.Clear();   MapInfo.Geometry.DPoint point = new MapInfo.Geometry.DPoint(-100, 40);   MapInfo.Data.MIConnection connection = new MapInfo.Data.MIConnection(); connection.Open(); MapInfo.Data.MICommand command = connection.CreateCommand(); command.CommandText = "Select * from hlj"; command.Parameters.Add("@x", point.x); command.Parameters.Add("@y", point.y); command.Parameters.Add("@n", this.mapControl1.Map.GetDisplayCoordSys()); command.Prepare(); MapInfo.Data.IResultSetFeatureCollection irfc = command.ExecuteFeatureCollection(); command.Dispose(); connection.Close(); foreach (MapInfo.Data.Feature f in irfc)//获得所有点集合 {     MapInfo.Data.Column c = irfc.Columns[2];     if (f[c.ToString()].ToString() != "" && f[c.ToString()].ToString() != null)      {            this.listBox1.Items.Add(f["id"]+"/" +  f[c.ToString()] +"/"+f["x"]+"/"+f["y"]).ToString();      } }