private void treeView4Combo1_AfterSelect(object sender, TreeViewEventArgs e)
        {
            tiDep = (TagInfo)treeView4Combo1.SelectedNode.Tag;

            NodeWalker_mnuCostSelectedRnuWithDecoding(treeView4Combo1.SelectedNode);
            dataTable1BindingSource.Filter = y.Remove(y.Length - 4, 4);
            dataGridView1.Refresh();


            this.toolStripStatusLabel1.Text = tiDep.name.Trim() + tiDep.id.ToString() + tiDep.parentID.ToString();
            this.toolStripStatusLabel2.Text = dataTable1BindingSource.Count.ToString();



        }

        private void NodeWalker_mnuCostSelectedRnuWithDecoding(TreeNode tn)
        {
            var hdnInfo = (TagInfo)tn.Tag;
            y = y + "id=" + hdnInfo.id + " or ";
            if (tn.Nodes != null)
            {
                foreach (TreeNode tnChild in tn.Nodes)
                {
                    NodeWalker_mnuCostSelectedRnuWithDecoding(tnChild);

                }
            }


        }