protected void Page_Load(object sender, EventArgs e) { B_Structure strBll = new B_Structure(); DataTable dt = strBll.Sel(); //name title className children[] M_Struct_Tree pmodel = new M_Struct_Tree(); try { DTToJson(pmodel, dt, 0); ds_hid.Value = JsonConvert.SerializeObject(pmodel.children[0]); } catch { ds_hid.Value = "[]"; } }