DevExpress TreeList使用

using System;
using System.Collections.Generic;
using System.Drawing;
using System.Windows.Forms;
using DevExpress.XtraBars;
using DevExpress.XtraTreeList;
using DevExpress.XtraTreeList.Nodes;

namespace DevExpressUtilHelpV3
{
  public static class TreeListToolV3
  {
    public delegate string BuildPathRule(string nodeText, string fullPathInfo);
    /// <summary>
    /// 获取选中节点到根节点的所有信息
    /// </summary>
    /// <param name="focusedNode">TreeListNode</param>
    /// <param name="columnID">列名称</param>
    /// <param name="buildPathRule">规则委托</param>
    /// <returns>路径信息</returns>
    public static string FullPathInfo(this TreeListNode focusedNode, string columnID, BuildPathRule buildPathRule)
    {
      if (focusedNode == null)
        throw new ArgumentNullException("focusedNode");
      if (string.IsNullOrEmpty("columnID"))
        throw new ArgumentNullException("columnID");
      string _fullPathInfo = string.Empty;
      _fullPathInfo = focusedNode.GetDisplayText(columnID);
      while (focusedNode.ParentNode != null)
      {
        focusedNode = focusedNode.ParentNode;
        string _nodeText = focusedNode.GetDisplayText(columnID).Trim();
        _fullPathInfo = buildPathRule(_nodeText, _fullPathInfo);
      }
      return _fullPathInfo;
    }
    public delegate bool CompareNodeRule(TreeListNode focusedNode);
    /// <summary>
    /// 获取筛选节点到根节点的所有信息
    /// </summary>
    /// <param name="focusedNode">TreeListNode</param>
    /// <param name="columnID">列名称</param>
    /// <param name="compareNodeRule">规则委托</param>
    /// <param name="buildPathRule">规则委托</param>
    /// <returns>路径信息</returns>
    public static string FilterPathInfo(this TreeListNode focusedNode, string columnID, CompareNodeRule compareNodeRule, BuildPathRule buildPathRule)
    {
      if (focusedNode == null)
        throw new ArgumentNullException("focusedNode");
      if (string.IsNullOrEmpty("columnID"))
        throw new ArgumentNullException("columnID");
      string _fullPathInfo = string.Empty;
      _fullPathInfo = focusedNode.GetDisplayText(columnID);
      while (focusedNode.ParentNode != null)
      {
        focusedNode = focusedNode.ParentNode;
        if (compareNodeRule(focusedNode))
        {
          string _nodeText = focusedNode.GetDisplayText(columnID).Trim();
          _fullPathInfo = buildPathRule(_nodeText, _fullPathInfo);
        }
      }
      return _fullPathInfo;
    }
    /// <summary>
    /// 递归遍历树节点
    /// </summary>
    /// <param name="tree"></param>
    /// <param name="opreateRule"></param>
    public static void LoopTree(this TreeList tree, Action<TreeListNode> opreateRule)
    {
      if (tree == null)
        throw new ArgumentNullException("tree");
      foreach (TreeListNode node in tree.Nodes)
      {
        opreateRule(node);
        if (node.Nodes.Count > 0)
        {
          LoopTreeNodes(node, opreateRule);
        }
      }
    }
    /// <summary>
    /// 递归遍历TreeListNode节点
    /// </summary>
    /// <param name="node"></param>
    /// <param name="opreateRule"></param>
    public static void LoopTreeNodes(this TreeListNode node, Action<TreeListNode> opreateRule)
    {
      if (node == null)
        throw new ArgumentNullException("node");
      foreach (TreeListNode _childNode in node.Nodes)
  {
  opreateRule(_childNode);
  LoopTreeNodes(_childNode, opreateRule);
  }
  }
/// <summary>
/// 递归遍历TreeListNode,当opreateRule返回false停止循环
/// </summary>
/// <param name="node">TreeListNode</param>
/// <param name="opreateRule">Func<TreeListNode, bool></param>
public static void LoopTreeNodes_Break(this TreeListNode node, Func<TreeListNode, bool> opreateRule)
  {
if (node == null)
throw new ArgumentNullException("node");
foreach (TreeListNode _childNode in node.Nodes)
  {
if (!opreateRule(_childNode))
break;
  LoopTreeNodes_Break(_childNode, opreateRule);
  }
  }
/// <summary>
/// 递归遍历TreeListNode,当opreateRule返回false跳出循环，直接进入下次循环
/// </summary>
/// <param name="node">TreeListNode</param>
/// <param name="opreateRule">Func<TreeListNode, bool></param>
public static void LoopTreeNodes_Continue(this TreeListNode node, Func<TreeListNode, bool> opreateRule)
  {
if (node == null)
throw new ArgumentNullException("node");
foreach (TreeListNode _childNode in node.Nodes)
  {
if (!opreateRule(_childNode))
continue;
  LoopTreeNodes_Continue(_childNode, opreateRule);
  }
  }
public delegate bool CheckNodeRule(TreeListNode fucusedNode);
public delegate void CheckNodeNullRule();
/// <summary>
/// 节点为null检查
/// </summary>
/// <param name="fucusedNode">TreeListNode</param>
/// <param name="checkNodeRule">若为NULL,处理逻辑</param>
/// <returns>TreeListNode</returns>
public static TreeListNode CheckNull(this TreeListNode fucusedNode, CheckNodeNullRule checkNodeRule)
  {
if (fucusedNode == null)
  {
  checkNodeRule();
return null;
  }
return fucusedNode;
  }
/// <summary>
/// 正对节点的检查逻辑
/// </summary>
/// <param name="fucusedNode">TreeListNode</param>
/// <param name="checkNodeRule">检查逻辑代码[委托]</param>
/// <returns>TreeListNode</returns>
public static TreeListNode Check(this TreeListNode fucusedNode, CheckNodeRule checkNodeRule)
  {
if (fucusedNode != null)
return checkNodeRule(fucusedNode) == true ? fucusedNode : null;
return null;
  }
/// <summary>
/// 水平滚动条
/// </summary>
/// <param name="tree">TreeList</param>
public static void HorzScroll(this TreeList tree)
  {
if (tree == null)
throw new ArgumentNullException("tree");
  tree.OptionsView.AutoWidth = false;
  tree.BestFitColumns();
  tree.HorzScrollVisibility = ScrollVisibility.Always;
  }
/// <summary>
/// 为TreeList附加右键菜单
/// MouseUp(object sender, MouseEventArgs e)事件中调用
/// </summary>
/// <param name="tree">TreeList</param>
/// <param name="e">MouseEventArgs</param>
/// <param name="menu">PopupMenu</param>
/// <param name="attachMenuRule">AttachMenuRule</param>
public static void AttachMenu(this TreeList tree, MouseEventArgs e, PopupMenu menu, Func<TreeListNode, bool> attachMenuRule)
  {
if (tree == null)
throw new ArgumentNullException("tree");
if (menu == null)
throw new ArgumentNullException("menu");
if (e.Button == MouseButtons.Right && Control.ModifierKeys == Keys.None && tree.State == TreeListState.Regular)
  {
  Point _point = new Point(Cursor.Position.X, Cursor.Position.Y);
  TreeListHitInfo _hitInfo = tree.CalcHitInfo(e.Location);
if (_hitInfo.HitInfoType == HitInfoType.Cell)
  tree.SetFocusedNode(_hitInfo.Node);
if (attachMenuRule(tree.FocusedNode))
  menu.ShowPopup(_point);
  }
  }
/// <summary>
/// 设置父节点的状态AfterCheckNode(object sender, NodeEventArgs e)
/// </summary>
/// <param name="node"></param>
/// <param name="check"></param>
public static void ProcessNodeCheckState(this TreeListNode node, CheckState check)
  {
if (node == null)
throw new ArgumentNullException("node");
  SetCheckedChildNodes(node, check);
  SetCheckedParentNodes(node, check);
  }
/// <summary>
/// 设置子节点CheckState
/// </summary>
/// <param name="node"></param>
/// <param name="check"></param>
private static void SetCheckedChildNodes(TreeListNode node, CheckState check)
  {
if (node != null)
  {
  node.LoopTreeNodes((TreeListNode _node) =>
  {
  _node.CheckState = check;
  });
  }
  }
/// <summary>
/// 设置父节点CheckState
/// </summary>
/// <param name="node"></param>
/// <param name="check"></param>
private static void SetCheckedParentNodes(TreeListNode node, CheckState check)
  {
if (node.ParentNode != null)
  {
bool _checkStatus = false;
  CheckState _nodeState;
  node.LoopTreeNodes_Break((TreeListNode _node) =>
  {
  _nodeState = _node.CheckState;
if (!check.Equals(_nodeState))
  {
  _checkStatus = !_checkStatus;
return false;//跳出循环
  }
return true;//继续循环
  });
  node.ParentNode.CheckState = _checkStatus ? CheckState.Indeterminate : check;
  SetCheckedParentNodes(node.ParentNode, check);
  }
  }
/// <summary>
/// 根据CheckState获取TreeListNode
/// </summary>
/// <param name="tree">TreeList</param>
/// <param name="state">CheckState</param>
/// <param name="GetNodesByStateRule">返回True的时候继续</param>
/// <returns>TreeListNode集合</returns>
public static List<TreeListNode> GetNodesByState(this TreeList tree, CheckState state, Func<TreeListNode, bool> GetNodesByStateRule)
  {
if (tree == null)
throw new ArgumentNullException("tree");
  List<TreeListNode> _checkNodes = new List<TreeListNode>();
  tree.LoopTree((TreeListNode node) =>
  {
if (GetNodesByStateRule(node))
  {
if (node.CheckState == state)
  _checkNodes.Add(node);
  }
  });
return _checkNodes;
  }
  }
}