private void OnInvokeSharpMapLayerDialog(object sender, EventArgs e) { var map = new SharpMap.Map(); var ts = new BruTile.Web.OsmTileSource(); var tl = new SharpMap.Layers.TileLayer(ts, "OSM"); map.Layers.Add(tl); var sml = new SharpMapLayer(map); App.Map.Layers.Add(sml); }