ComponentFactory.Krypton.Ribbon.KryptonRibbonGroupLinesDesigner.OnAddCheckBox C# (CSharp) Method

        private void OnAddCheckBox(object sender, EventArgs e)
        {
            if ((_ribbonLines != null) &&
                (_ribbonLines.Ribbon != null) &&
                 _ribbonLines.RibbonGroup.Items.Contains(_ribbonLines))
            {
                // Use a transaction to support undo/redo actions
                DesignerTransaction transaction = _designerHost.CreateTransaction("KryptonRibbonGroupLines AddCheckBox");

                try
                {
                    // Get access to the Items property
                    MemberDescriptor propertyItems = TypeDescriptor.GetProperties(_ribbonLines)["Items"];

                    RaiseComponentChanging(propertyItems);

                    // Get designer to create a check box item
                    KryptonRibbonGroupCheckBox checkBox = (KryptonRibbonGroupCheckBox)_designerHost.CreateComponent(typeof(KryptonRibbonGroupCheckBox));
                    _ribbonLines.Items.Add(checkBox);

                    RaiseComponentChanged(propertyItems, null, null);
                }
                finally
                {
                    // If we managed to create the transaction, then do it
                    if (transaction != null)
                        transaction.Commit();
                }
            }
        }