PRotected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { bindTree(); } } private void bindTree() { ALIYUN_PIC.BLL.Folder_oper_BLL bll = new Folder_oper_BLL(); DataTable dt = bll.PIC_Bind();//得到需要的datatable this.FillNode(dt, null); } private void FillNode(DataTable dt, TreeNode node) { DataView dv = new DataView(dt); if (node == null) //根结点 { dv.RowFilter = "PARENT_NODE='0'"; //筛选到根结点的所有子节点 } else //不是根结点 { dv.RowFilter = "PARENT_NODE='" + node.Value + "'"; //筛选对应节点的所有子节点 } foreach (DataRowView drv in dv) //遍历填充节点的所有子节点，如果传入的节点node为叶子节点，遍历要退出，不再进行递归 { TreeNode no = new TreeNode(drv["NODE_NAME"].ToString(), drv["id"].ToString()); FillNode(dt, no); //填充no节点的子节点 if (node == null) { this.PIC_TREE.Nodes.Add(no); } else { node.ChildNodes.Add(no); } } }