权限管理涉及复选框多勾选。

1.控件属性设置

TreeList.OperationView.ShowCheckBoxes=true;用于显示CheckBox；

TreeList.OperationBehavior.AllowIndeterminateCheckState=true;  设置CheckBox允许第三种状态。

2.控件事件绑定

要实现选择父级节点选择。子级节点全部选中。父级节点未选择。反之。子级节点部分选中。父级节点为第三种状态。

private void treeList1_AfterCheckNode(object sender, DevExpress.XtraTreeList.NodeEventArgs e)        {            SetCheckedChildNodes(e.Node, e.Node.CheckState);            SetCheckedParentNodes(e.Node, e.Node.CheckState);        }        private void treeList1_BeforeCheckNode(object sender, DevExpress.XtraTreeList.CheckNodeEventArgs e)        {            e.State = (e.PrevState == CheckState.Checked ? CheckState.Unchecked : CheckState.Checked);        }        /// 
        /// 设置子节点的状态        /// 
        ///         ///         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);            }        }        /// 
        /// 设置父节点的状态        /// 
        ///         ///         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;                    }                }                node.ParentNode.CheckState = b ? CheckState.Indeterminate : check;                SetCheckedParentNodes(node.ParentNode, check);            }        }

实现TreeList节点筛选及其节点定位

1.定义类实现方法

class FilterNodeOperation : TreeListOperation    {        string pattern;        public FilterNodeOperation(string _pattern)        {            pattern = _pattern;        }        public override void Execute(TreeListNode node)        {            if (NodeContainsPattern(node, pattern))            {                node.Visible = true;                //if (node.ParentNode != null)                  //    node.ParentNode.Visible = true;                  //必须要递归查找其父节点全部设置为可见                  var pNode = node.ParentNode;                while (pNode != null)                {                    pNode.Visible = true;                    pNode = pNode.ParentNode;                }            }            else                node.Visible = false;        }        bool NodeContainsPattern(TreeListNode node, string pattern)        {            foreach (TreeListColumn col in node.TreeList.VisibleColumns)            {                if (node.GetDisplayText(col).Contains(pattern))                    return true;            }            return false;        }    }

2.调用方法

var operation = new FilterNodeOperation(txtRightName.Text.Trim());   treePriMenus.NodesIterator.DoOperation(operation);

注：在初次加载权限列表时。将Node.Check=true;不会触发节点选中事件。因此不会存在第三种状态出现。需再次调用SetCheckedParentNodes方法

if (node != null)     node.CheckState =CheckState.Checked;      SetCheckedParentNodes(node, node.CheckState);