C#无限极分类菜单方法

话不多说直接上代码

我利用的是MVC5+EF做的。

以下这部分是controller代码。

 public JsonResult Test()
        {
            List<Category> Categorylist = GetAllCategorys();
            Category root = db.Categorys.Find(1);
            LoopToAppendChildren(root);
            return Json(root.ChildCategory, JsonRequestBehavior.AllowGet);
        }
 public void LoopToAppendChildren(Category curItem)
        {            
            var subItems = GetCategorys(curItem.ID);
            curItem.ChildCategory = new List<Category>();
            curItem.ChildCategory.AddRange(subItems);
            foreach (var subItem in subItems)
            {
                LoopToAppendChildren(all, subItem);
            }
        }

        public List<Category> GetCategorys(int ParentID)
        {
            var categorys = from s in db.Categorys
                            orderby s.ID descending
                            where s.CategoryParentID == ParentID
                            select s;

            return categorys.ToList();

        }

        public List<Category> GetAllCategorys()
        {
            var categorys = from s in db.Categorys
                            orderby s.ID descending
                            select s;

            return categorys.ToList();

        }

 这部分是Category类代码

 public class Category
    {
        public int ID { get; set; }
        public string CategoryName { get; set; }
        public string CategoryInfo { get; set; }
        public int CategoryParentID { get; set; }
        public bool CategoryStatus { get; set; }
        public int CategorySort { get; set; }
        public List<Category> ChildCategory { get; set; }
    }

主要就是这两个文件，此部分可以用于bootstrap treeview的使用，和面包屑导航栏的使用。

//通用 ParentId,Id,children 用了反射效率不高，没测试

public void LoopToAppendChildren<T>(List<T> all, T curItem, string parentIdName = "ParentId", string idName = "Id", string childrenName = "children")
{
  var subItems = all.Where(ee => ee.GetType().GetProperty(parentIdName).GetValue(ee, null).ToString() == curItem.GetType().GetProperty(idName).GetValue(curItem, null).ToString()).ToList(); //新闻1

  curItem.GetType().GetField(childrenName).SetValue(curItem, subItems);
  foreach (var subItem in subItems)
  {
    LoopToAppendChildren(all, subItem);//新闻1.1
  }
 }

参考文章：http://www.cnblogs.com/xuejianxiyang/p/5027280.html