Find Nodes in a TreeView

just recurse through the treenodes and test for the string using IndexOf

private void TestNode(TreeNode treeNode, string testString)
{
// test node
   if (treeNode.Text.IndexOf(testString) >= 0)
      MessageBox.Show("fount text");

   // Print each node recursively.
   foreach (TreeNode tn in treeNode.Nodes)
   {
      TestNode(tn);
   }
}

// Call the procedure using the TreeView.
private void CallRecursive(TreeView treeView)
{
   // Print each node recursively.
   TreeNodeCollection nodes = treeView.Nodes;
   foreach (TreeNode n in nodes)
   {
      TestNode(n, testString);
   }

}