webform , vb.net ，treeview如何得到选中的结点？

[xingzichu]

有一个treeview

Group
G1
aaa
bbb
G2
ccc
ddd
G3
eee
每个节点都有checkbox，能不能遍历这棵树，记录下所有选中节点的内容呢？
谢谢。

[justdoit006]

javascript:

var trnSelected;
trnSelected = treeview1.getTreeNode(treeview1.selectedNodeIndex);
var text=trnSelected.getAttribute("text")

vb.net:
Dim trnSelected As TreeNode
trnSelected = treeview1.GetNodeFromIndex(treeview1.SelectedNodeIndex)
dim text=trnSelected.Text

[xingzichu]

to: justdoit006(我的心太乱
我这样：
Dim trnSelected As New Microsoft.Web.UI.WebControls.TreeNode()
trnSelected = tvwGroup.GetNodeFromIndex(tvwGroup.SelectedNodeIndex)
If trnSelected.Checked = True Then
Me.TextBox1.Text = trnSelected.Text
End If
如果选中根结点，则显示“Group”
如果没选中根结点，选中其他子结点的话，则什么也不显示。

怎样才能遍历到子结点呢？例如选中，aaa，则显示”aaa“？

[justdoit006]

Dim trnSelected As TreeNode
Dim intNodeCounts As Integer

trnSelected = tvwGroup.GetNodeFromIndex(tvwGroup.SelectedNodeIndex)'得到选择的节点
intNodeCounts = trnSelected.Nodes.Count
If intNodeCounts = 0 Then'选择了子节点
.......
Else'选择了父节点
Me.TextBox1.Text = trnSelected.Text
end if

[justdoit006]

Else'选择了父节点

Dim trnNode As TreeNode
For i = 0 To intNodeCounts - 1
trnNode = trnSelected.Nodes(i)
此处可以继续判断...
next
end if

[simon8181]

用递归做
Private Sub Cpoint(ByVal CNode As Microsoft.Web.UI.WebControls.TreeNode)
Dim cp As Short
Dim j As Short
cp = CNode.Nodes.Count
If cp = 0 and CNode.Text="aaa" Then
response.write(CNode.Text）
Else
For j = 0 To cp - 1
Call Cpoint(CNode.Nodes(j))
Next
End If
End Sub