1：正确方法

只需要设置属性即可  treeList1.OptionsBehavior.AllowRecursiveNodeChecking = true;

 

2：编程实现方法：

 

//1、选择某一节点时,该节点的子节点全部选择        //2、取消某一节点时,该节点的子节点全部取消选择        //3、某节点的子节点全部选择时,该节点选择        //4、某节点的子节点未全部选择时,该节点不选择        private void treeMenus_BeforeCheckNode(object sender, DevExpress.XtraTreeList.CheckNodeEventArgs e)        {            if (e.PrevState == CheckState.Checked)            {                e.State = CheckState.Unchecked;            }            else            {                e.State = CheckState.Checked;            }        }        private void treeMenus_AfterCheckNode(object sender, DevExpress.XtraTreeList.NodeEventArgs e)        {            SetCheckedChildNodes(e.Node, e.Node.CheckState);            SetCheckedParentNodes(e.Node, e.Node.CheckState);        }        #endregion#region TreeList 操作共同        #region 设置子节点状态          private void SetCheckedChildNodes(DevExpress.XtraTreeList.Nodes.TreeListNode node, CheckState check)        {            for (int i = 0; i < node.Nodes.Count; i++)            {                node.Nodes[i].CheckState = check;                SetCheckedChildNodes(node.Nodes[i], check);            }        }        #endregion        #region 设置父节点状态          private void SetCheckedParentNodes(DevExpress.XtraTreeList.Nodes.TreeListNode node, CheckState check)        {            if (node.ParentNode != null)            {                bool b = false;                CheckState state;                for (int i = 0; i < node.ParentNode.Nodes.Count; i++)                {                    state = (CheckState)node.ParentNode.Nodes[i].CheckState;                    if (!check.Equals(state))                    {                        b = !b;                        break;                    }                }                if (b)                {                    node.ParentNode.CheckState = CheckState.Indeterminate;                }                else                {                    node.ParentNode.CheckState = check;                }                SetCheckedParentNodes(node.ParentNode, check);            }        }        #endregion        #endregion