private void button4_Click(object sender, EventArgs e) { addCpts cptDlg = new addCpts(apxCtrl.Game); if (cptDlg.ShowDialog() == DialogResult.OK) { apxCtrl.Game.AddComponent(cptDlg.resComponent); ReloadComponents(); treeView1.Nodes.Clear(); PopulateTreeView(apxCtrl.Game.RootNode); } }