treeview问题

Private Sub TreeView1_DoubleClick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TreeView1.DoubleClick
        '双击读取节点文本
     Select Case  TreeView1.SelectedNode.Text
          Case ""
              您可写自己要执行的代码
          Case ""
              您可写自己要执行的代码
          Case Else
     End Select
  End Sub