#region 树treeList_CustomDrawNodeCheckBox        private void treeList_CustomDrawNodeCheckBox(object sender, CustomDrawNodeCheckBoxEventArgs e)        {            if (e != null && e.Node != null && e.Node.Tag != null)            {                if (e.Node.Tag.ToString() == "-1")                {                    e.ObjectArgs.State = DevExpress.Utils.Drawing.ObjectState.Disabled;                }            }        }        #endregion        private void treeList_BeforeCheckNode(object sender, DevExpress.XtraTreeList.CheckNodeEventArgs e)        {            if (e.Node.Tag.ToString() == "-1")            {                e.State = CheckState.Unchecked;            }        }