在DevExpress中如何给TreeListLookUpEdit控件赋值

foreach (TreeListNode node in treeListLookUpEdit1TreeList.Nodes)//获取选择的父节点信息
{
DataRowView drv = treeListLookUpEdit1TreeList.GetDataRecordByNode(node) as DataRowView;

            foreach (TreeListNode n in node.Nodes)
            {
                if (n.CheckState != CheckState.Unchecked)
                {
                    DataRowView d = treeListLookUpEdit1TreeList.GetDataRecordByNode(n) as DataRowView;
                    if (d != null)
                    {
                        c += d["菜单名称"].ToString() + ",";
                        str += d["id"].ToString() + ",";
                    }
                }
            }
        }