C# TreeView递归遍历方法

 /// <summary>
3 /// 查找TreeView控件下是否有指定值的节点
4 ///</summary>
5 ///<param name="tvControl">TreeView控件</param>
6 ///<param name="strValue">指定节点值</param>
7 ///<returns></returns>
8  publicstatic TreeNode FindNode(TreeView tvControl,string strValue)
9 {
10 TreeNode tnRet=null;
11
12 foreach (TreeNode tnin tvControl.Nodes)
13 {
14
15 tnRet = FindNode(tn, strValue);
16
17 if (tnRet!=null)break;
18
19 }
20
21 return tnRet;
22
23 }
24
25 ///<summary>
26 /// 查找当前节点下是否有指定值的节点
27 ///</summary>
28 ///<param name="tnParent">当前节点</param>
29 ///<param name="strValue">指定节点值</param>
30 ///<returns>TreeNode</returns>
31 publicstatic TreeNode FindNode(TreeNode tnParent,string strValue)
32 {
33 if (tnParent==null)returnnull;
34
35 if (tnParent.Value== strValue)return tnParent;
36
37 TreeNode tnRet=null;
38 TreeNode tnTemp=null;
39
40 foreach (TreeNode tnin tnParent.ChildNodes)
41 {
42
43 tnTemp = FindNode(tn, strValue);
44
45 if (tnTemp!=null&& tnTemp.Value== strValue)
46 {
47 tnRet = tnTemp;
48 break;
49 }
50
51 }
52
53 return tnRet;
54
55 }
56
57 ///<summary>
58 /// 查找TreeView控件下是否有指定值的节点
59 ///</summary>
60 ///<param name="tvControl">TreeView控件</param>
61 ///<param name="strValue">指定节点值</param>
62 ///<returns></returns>
63 publicstatic TreeNode FindNode(TreeView tvControl,string strValue)
64 {
65 TreeNode tnRet=null;
66
67 foreach (TreeNode tnin tvControl.Nodes)
68 {
69
70 tnRet = FindNode(tn, strValue);
71
72 if (tnRet!=null)break;
73
74 }
75
76 return tnRet;
77
78 }
79
80 ///<summary>
81 /// 查找当前节点下是否有指定值的节点
82 ///</summary>
83 ///<param name="tnParent">当前节点</param>
84 ///<param name="strValue">指定节点值</param>
85 ///<returns>TreeNode</returns>
86 publicstatic TreeNode FindNode(TreeNode tnParent,string strValue)
87 {
88 if (tnParent==null)returnnull;
89
90 if (tnParent.Value== strValue)return tnParent;
91
92 TreeNode tnRet=null;
93 TreeNode tnTemp=null;
94
95 foreach (TreeNode tnin tnParent.ChildNodes)
96 {
97
98 tnTemp = FindNode(tn, strValue);
99
100 if (tnTemp!=null&& tnTemp.Value== strValue)
101 {
102 tnRet = tnTemp;
103 break;
104 }
105
106 }
107
108 return tnRet;
109
110 }
111