ClearCanvas.Desktop.View.WinForms.DesktopWindowView.Dispose C# (CSharp) Method

        protected override void Dispose(bool disposing)
        {
            if (disposing && _form != null)
            {
				if(_infoNotificationDialog != null)
				{
					_infoNotificationDialog.Dispose();
					_infoNotificationDialog = null;
				}
				if (_errorNotificationDialog != null)
				{
					_errorNotificationDialog.Dispose();
					_errorNotificationDialog = null;
				}


				_form.VisibleChanged -= FormVisibleChangedEventHandler;
				_form.Activated -= FormActivatedEventHandler;
				_form.Deactivate -= FormDeactivateEventHandler;
				_form.FormClosing -= FormFormClosingEventHandler;
				_form.TabbedGroups.PageCloseRequest -= TabbedGroupPageClosePressedEventHandler;
				_form.TabbedGroups.PageChanged -= TabbedGroupPageChangedEventHandler;
				_form.DockingManager.ContentHiding -= DockingManagerContentHidingEventHandler;
				_form.DockingManager.ContentShown -= DockingManagerContentShownEventHandler;
				_form.DockingManager.ContentAutoHideOpening -= DockingManagerContentAutoHideOpeningEventHandler;
				_form.DockingManager.ContentAutoHideClosed -= DockingManagerContentAutoHideClosedEventHandler;
				_form.DockingManager.WindowActivated -= DockingManagerWindowActivatedEventHandler;
				_form.DockingManager.WindowDeactivated -= FormDockingManagerWindowDeactivatedEventHandler;

                try
                {
                    SaveWindowSettings();
                }
                catch (Exception e)
                {
                    // if the window settings can't be saved for any reason,
                    // just log it and move on
                    Platform.Log(LogLevel.Error, e);
                }

                // bug #1171: if this window is the active window and there are other windows,
                // select the previously active one before destroying this one
                if (_desktopWindowActivationOrder.LastElement == this && _desktopWindowActivationOrder.Count > 1)
                {
                    _desktopWindowActivationOrder.SecondLastElement.Activate();
                }

                // remove this window from the activation order
                _desktopWindowActivationOrder.Remove(this);


                // now that we've cleaned up the activation,
                // we can destroy the form safely without worrying 
                // about the OS triggering activation events

                // this will close the form without firing any events
                _form.Dispose();
                _form = null;

                // notify that we are no longer visible
                SetVisibleStatus(false);
            }

            base.Dispose(disposing);
        }