/// <summary> /// 获取所有类别 类别中包含所有子类别 /// </summary> /// <returns></returns> public List <Category> GetModels() { List <Category> list = cdao.GetModels(); if (list == null) { return(null); } Category currentCg = list[0]; List <Category> retList = new List <Category>(); Category parent = null; Category child = null; int index = 0; foreach (Category cg in list) { index++; if (cg.CID == cg.PCID) { if (index == 1) { parent = new Category(); parent = cg; continue; } retList.Add(parent); currentCg = cg; parent = new Category(); parent = cg; continue; } if (cg.PCID == currentCg.PCID) { child = new Category(); child = cg; parent.Children.Add(child); } } retList.Add(parent); return(retList); }