protected void Page_Load(object sender, EventArgs e) { GMap1.Add(GMapType.GTypes.Physical); GHierarchicalMapTypeControl hierarchicalMapTypeControl = new GHierarchicalMapTypeControl(); hierarchicalMapTypeControl.clearPreviousRelationShips = true; hierarchicalMapTypeControl.hierarchicalMapTypeControlRelations.Add( new GHierarchicalMapTypeControlRelation(GMapType.GTypes.Normal, GMapType.GTypes.Physical, "Subgurim Physical", false)); hierarchicalMapTypeControl.hierarchicalMapTypeControlRelations.Add( new GHierarchicalMapTypeControlRelation(GMapType.GTypes.Satellite, GMapType.GTypes.Hybrid, "Subgurim Hybrid", false)); GMap1.gHierarchicalMapTypeControl = hierarchicalMapTypeControl; }