XtraUserControlBlankList_Load(= = = = = ;= = = = = = = = .BlankTreeList.Columns.AddRange( [] {,}, TreeListNode node = .BlankTreeList.FindNodeByFieldValue(, ); == =  (dt.Rows.Count >  (DataRowView dv1 [] nodeview = { dv1[], dv1[], dv1[=].ToString(),dt,tn);

 private void GetChild(string upnode, DataTable dt,TreeListNode tn)
        {try{
                DataView dv = new DataView(dt);
                dv.RowFilter = "ParentId = '" + upnode + "'";foreach (DataRowView dv1 in dv)
                {object[] nodeview = { dv1["BlankID"], dv1["BlankName"], dv1["ParentId"] };
                    TreeListNode childnode = BlankTreeList.AppendNode( nodeview , tn);
                    GetChild(dv1["BlankID"].ToString(), dt, childnode);//参数(父级ID,DataTable表,父节点)                }
            }catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }

 private void BlankTreeList_FocusedNodeChanged_1(object sender, FocusedNodeChangedEventArgs e)
        {
            TreeListNode curNode = e.Node;if (curNode == null) return;
            TxtE1.Text = curNode.GetValue("BlankID").ToString();}