TreeList 复选框选中节点

　　　

 1 ///treeLArea   :  TreeList; 
 2 ///imglChecked :  ImageList;
 3 /// 
 4 ///
 5 
 6 //指定StateImageList
 7 this.treelArea.StateImageList = this.imglChecked;
 8 
 9 //treelArea的GetStateImage事件处理程序
10  private void treelArea_GetStateImage(object sender, DevExpress.XtraTreeList.GetStateImageEventArgs e)
11  {
12     try
13     {
14          CheckState checkState = (CheckState)e.Node.GetValue("checkState");
15          e.NodeImageIndex = (checkState == CheckState.Unchecked) ? 0 : (checkState == CheckState.Checked ? 1 : 2);
16      }
17      catch(Exception)
18     {
19 
20 　　}
21 
22  }
23 
24 //鼠标单击事件处理
25  private void treelArea_MouseDown(object sender, MouseEventArgs e)
26  {
27      if (e.Button==MouseButtons.Left)
28      {
29          TreeListHitInfo hitInfo = (sender as TreeList).CalcHitInfo(new Point(e.X,e.Y));
30          if (hitInfo.HitInfoType==HitInfoType.StateImage)
31          {
32              SetCheckValue(hitInfo.Node);                  
33          }
34      }
35  }
36 
37 
38 //设置节点状态
39     private void SetCheckValue(TreeListNode node)
40      {
41          CheckState checkState = CheckState.Unchecked;
42          if ((CheckState)node.GetValue("checkState")==CheckState.Unchecked||(CheckState)node.GetValue("checkState")==CheckState.Indeterminate)
43          {
44              checkState = CheckState.Checked;
45          }
46          node.TreeList.FocusedNode = node;
47          node.TreeList.BeginUpdate();
48          node.SetValue("checkState",checkState);
49          SetParentCheckState(node,checkState);
50          SetchildCheckState(node, checkState);
51          node.TreeList.EndUpdate();     
52      }
53 
54 //递归设置父节点
55      private void SetParentCheckState(TreeListNode node,CheckState checkState)
56      {
57          TreeListNode parentNode = node.ParentNode;
58          bool style = false;
59          if (parentNode!=null)
60          {             
61              foreach (TreeListNode  n in parentNode.Nodes)
62              {
63                  if (!checkState.Equals((CheckState)n.GetValue("checkState")))
64                  {
65                      style = true;
66                      break;
67                  }
68              }
69              parentNode.SetValue("checkState", style ? CheckState.Indeterminate : checkState);
70              SetParentCheckState(parentNode,checkState);
71          }
72      
73      }
74 
75 //递归设置子节点
76      private void SetchildCheckState(TreeListNode node, CheckState checkState)
77      {
78          if (node.HasChildren)
79          {
80              foreach (TreeListNode n in node.Nodes)
81              {
82                  n.SetValue("checkState",checkState);
83                  SetchildCheckState(n,checkState);
84              }             
85          }
86                  
87      }