Is it possible to get one of the child node get selected programatically

Question

I would like to select one of the child node of my treeview get selected programatically. My treeview is as follow at run time

      Root
       |->A.txt(I wo         


        

Answer 1

Atlast i got the answer

        TreeNode TvNode = tvwACH.SelectedNode.Parent;

            while (TvNode != null)
            {
                if (TvNode.Text.EndsWith(".txt", true, System.Globalization.CultureInfo.InvariantCulture))
                {
                    tvwACH.SelectedNode = TvNode;
                    TvNode = null;
                }
                else
                    TvNode = TvNode.Parent;
            }