关键代码:
/// <summary> /// 获取可视区域节点 /// </summary> /// <param name="treeList">TreeList</param> /// <param name="conditonHanlder">条件委托</param> /// <returns>可视区域节点集合</returns> public static List<TreeListNode> GetVisibleNodes(this TreeList treeList, Predicate<TreeListNode> conditonHanlder) { List<TreeListNode> _visibleNodes = new List<TreeListNode>(); RowsInfo _rowsInfo = treeList.ViewInfo.RowsInfo; foreach (RowInfo ri in _rowsInfo.Rows) { TreeListNode _curNode = ri.Node; if (conditonHanlder(_curNode)) { _visibleNodes.Add(_curNode); } } return _visibleNodes; } /// <summary> /// 获取可视区域节点 /// </summary> /// <param name="treeList">TreeList</param> /// <returns>可视区域节点集合</returns> public static List<TreeListNode> GetVisibleNodes(this TreeList treeList) { return GetVisibleNodes(treeList, n => 1 == 1); }
代码使用:
MessageBox.Show(tvwLamp.LHTree.GetVisibleNodes(n => n.GetNodeType() == NodeType.Cab).Count.ToString());
希望有所帮助!
[DevExpress]获取TreeList可见节点集合
时间: 2024-10-28 16:26:45