原理有点像 推销人员的发展下级直属销售人员。
#region 树结构下拉类别 public List<Entity> GetTreeList() { var list = GetList(); var resultList = new List<Entity>(); CreateTreeList(list, null, 0, ref resultList); return resultList; } private void CreateTreeList(List<Entity> categoryList, string parentId, int level, ref List<Entity> resultList) { var list = categoryList.Where(p => p.ParentId == parentId).ToList(); if (list.Count() > 0) { level++; string space = ""; for (var i = 0; i < level - 1; i++) space += " "; foreach (var item in list) { item.Name = space + item.Name; resultList.Add(item); CreateTreeList(categoryList, item.F_Id, level, ref resultList); } } } #endregion