private void Uipagebase_FormClosed(object sender, FormClosedEventArgs e) { try { LBUIPageBase Uipagebase = sender as LBUIPageBase; if (Uipagebase.RefTabPage != null) { if (this.tcMain.TabPages.Contains(Uipagebase.RefTabPage)) { Uipagebase.Dispose(); this.tcMain.TabPages.Remove(Uipagebase.RefTabPage); } } } catch (Exception ex) { LB.WinFunction.LBCommonHelper.DealWithErrorMessage(ex); } }