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

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();
     }
}