递归绑定树形菜单

 

递归绑定树形菜单
public void BindTreeVew(TreeView treeView, bool isExpanded, string selected)
        {
            //将获取的数据转换为 一个DataTable
            DataTable dt = GetDataTable();
            treeView.Nodes.Clear();//清空 树的所有节点
            //筛选数组
            DataRow[] rowlist = dt.Select("ParentId='0'");
            if (rowlist.Length <= 0) return;
            //创建跟节点
            TreeNode rootNode = new TreeNode();
            rootNode.Text = rowlist[0]["Text"].ToString();
            rootNode.Value = rowlist[0]["NodeId"].ToString();
            rootNode.Expanded = isExpanded;
            rootNode.Selected = true;
            //添加跟节点
            treeView.Nodes.Add(rootNode);
            CreateChildNode(rootNode, dt, isExpanded, seleced);
        }
        private void CreateChildNode(TreeNode parentNode, DataTable dt, bool isExpanded, string seleced)
        {
            //选择数据
            DataRow[] rowList = dt.Select("ParentId=" + Convert.ToInt32(parentNode.Value));
            foreach (DataRow row in rowList)
            {
                //创建一个新的节点了
                TreeNode node = new TreeNode();
                node.Text = row["Text"].ToString();
                node.Value = row["NodeId"].ToString();
                node.NavigateUrl=row["Url"].ToString();
                node.Expanded = isExpanded;
                if (node.Value == seleced)
                {
                    node.Selected = true;
                }
                parentNode.ChildNodes.Add(node);
                //递归调用，创建其他节点
                CreateChildNode(node, dt, isExpanded, seleced);
            }
        }