TreeView递归绑定无限分类数据

TreeView递归绑定无限分类数据

实现一个动态绑定，无限级分类数据时，需要将数据绑定到TreeView控件，分类表的结构是这样的：

字段	类型
Id	int
ParentId	int
Name	Nvarchar(64)

 

实现数据绑定：

        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);

        }

TreeViewBind