常用代码

  if(!Page.IsPostBack)
   {
    MapControl1.Map.Clear();
    MapControl1.Map.Load(MapLoader.CreateFromFile(Server.MapPath("/mymap")+"\\map\\xy.gst"));
    MapControl1.SelectableLayers.Clear();
    MapControl1.SelectableLayers.Add("o地名p");
   }

    (_tempTable as IFeatureCollection).Clear();

    MapInfo.Engine.Session.Current.Catalog.GetTable(TableName)

   Selection sl =MapInfo.Engine.Session.Current.Selections.DefaultSelection;
   IResultSetFeatureCollection fc=sl[0];
   IFeatureEnumerator fn=fc.GetFeatureEnumerator();
   ListBox1.Items.Clear();
   while(fn.MoveNext())
    if(fn.Current.Geometry.GetType().ToString()=="MapInfo.Geometry.LegacyText")
     ListBox1.Items.Add(((MapInfo.Geometry.LegacyText)fn.Current.Geometry).Caption);

    MapInfo.Engine.Session.Current.Catalog.SearchForFeature("Layer1",MapInfo.Data.SearchInfoFactory.SearchWhere("MI_Key='"+strKey+"'") )