网格外：仅保存，更新和取消，无插入行或数据记录

I'm using the Kendo Grid in my application. Outside my grid I just need button save/ submit , update and cancel only. How do I do that? Insert should not be possible because it just already have treeview within checkboxes. If I define the grid as follows, more example have insert like add row. So, I don't want that happen. Just save/submit the selected treeview into database.The submit and cancel button at toolbar.

toolbar: [{ name: "submit", text: "Submit" , click: customSave},
          { name: "cancel", text: "Cancel" , click: customCancel}],