private void SetSystem(string systemname) { List <EDWorld> planets; List <EDStar> stars; if (systemname == null) { return; } textBoxSystemName.Text = systemname; edObjects.Clear(); planets = edmat.GetAllWorlds(textBoxSystemName.Text); stars = edmat.GetAllStars(textBoxSystemName.Text); edObjects.AddRange(planets); edObjects.AddRange(stars); UpDateListView(); //addMaterialNodeControl1.CurrentSystem = currentSystem.name; }