TreeView遞歸綁定無限分類數據

TreeView遞歸綁定無限分類數據

實現一個動態綁定，無限級分類數據時，需要將數據綁定到TreeView控件，分類表的結構是這樣的：

實現數據綁定：

        PRivate void ControlsDataBind()        {            tvCategory.Nodes.Clear();            List<Models.Category> types = CommonNews.Helper.OperateContext.Current.LoadNewsTypes();            IEnumerable<Models.Category> rootNodes = types.Where(t => t.ParentId == 0);            TreeNode node = null;            foreach (Models.Category item in rootNodes)            {                node = new TreeNode(item.CategoryName, item.CategoryId.ToString());                if (tvCategory.Nodes.Contains(node))                {                    continue;                }                IEnumerable<Models.Category> ts = types.Where(t => t.ParentId == item.CategoryId);                AddNodesToTree(ts, node, 0);            }        }        private void AddNodesToTree(IEnumerable<Models.Category> category, TreeNode node, int level)        {            TreeNode childNode = null;            foreach (Models.Category c in category)            {                childNode = new TreeNode(c.CategoryName, c.CategoryId.ToString());                if (tvCategory.Nodes.Contains(childNode))                {                    continue;                }                node.ChildNodes.Add(childNode);                AddNodesToTree(category.Where(t => t.CategoryId == c.ParentId), childNode, level + 1);            }            tvCategory.Nodes.Add(node);        }