1：父子节点联动
.OptionsBehavior.AllowRecursiveNodeChecking = true;
2：是否显示Checkbox
.OptionsView.ShowCheckBoxes = true;
3：隐藏列
treeList1.Columns["MenuUrl"].Visible = false;
4：数据绑定
treePDA.Nodes.Clear();
treePDA.DataSource = allPDAMenu;
treePDA.ParentFieldName = "ParentId";
treePDA.KeyFieldName = "MenuId";
