递归类别列表表

Question

如何创建递归类别，如下所示：

computer 
computer > Lenovo
computer > Lenovo > p250
Electronic 
Electronic > Lise

Answer 1

我将模型设置为： 我有具有CategoryParentId的CategoryTable。如果一行具有CategoryParentId = 0，则它是第一类。 这是我的功能

    private void GetSubTree(IList<Page> allCats, Page parent, List<CategoryItemModel> items)
    {
        var subCats = allCats.Where(c => c.CategoryParentID == parent.ID);
        foreach (var cat in subCats)
        {
            //add this category
            items.Add(new CategoryItemModel { ID = cat.Id, Title = parent.Title + " >> " + cat.Title });
            //recursive call in case your have a hierarchy more than 1 level deep
            GetSubTree(allCats, cat, items);
        }
    }