Select a TreeNode in TreeView in asp.net C#

[Triunfo]

I have a TreeView Control in my aspx page.Each TreeNode has a Text & Value property in that.for e.g.\[code\]TreeView Tr_View = new TreeView(); TreeNode TrNode=new TreeNode("ABC","1"); Tr_View.Nodes.Add(TrNode); TrNode = new TreeNode("DEF", "5"); Tr_View.Nodes.Add(TrNode); TrNode = new TreeNode("GHI", "9"); Tr_View.Nodes.Add(TrNode); TrNode = new TreeNode("JKL", "11"); Tr_View.Nodes.Add(TrNode);\[/code\]The Problem is that i want to select 3rd node on the basis of its value "9"Can any body help me out