private void button1_Click(object sender, EventArgs e) { POIPoints pnt = new POIPoints(); pnt.name = txtPOIName.Text; pnt.lat = Convert.ToDouble(txtPOILatitude.Text); pnt.lon = Convert.ToDouble(txtPOILongitude.Text); pnt.elev = Convert.ToDouble(txtPOIElevation.Text); pnt.alt = Convert.ToDouble(txtPOIAltitude.Text); pnt.cam_alt = Convert.ToDouble(txtPOICameraAlt.Text); pnt.visible = true; pnt.selected = true; _wpg.ReplacePOI(_poi_index, pnt); GMAPTree.Update_GMapTree(_wpg, _treeview); _gmap.ReDrawgMap(); this.Close(); }