用Linq操作数据小记
小记
1 public void UpdateWarhouse(Administrator admin) 2 { 3 var warhouseStr = Request["warhouse"]; 4 if (!string.IsNullOrEmpty(warhouseStr)) 5 { 6 7 var storageListAll = CacheAccess.GetStorages(_storageContract); 8 9 int[] selectedId = warhouseStr.Split(',').Select(c => Convert.ToInt32(c)).ToArray(); 10 List<Storage> selectStorages=storageListAll.Where(c=> selectedId.Contains(c.Id)).ToList(); 11 List<Storage> removeStorages = admin.Stoages.Where(c => !selectStorages.Contains(c)).ToList(); 12 List<Storage> newAddStorages = selectStorages.Where(c => !admin.Stoages.Contains(c)).ToList(); 13 14 foreach (var item in removeStorages) 15 { 16 admin.Stoages.Remove(item); 17 } 18 foreach(var item in newAddStorages) 19 { 20 admin.Stoages.Add(item); 21 } 22 23 } 24 25 }
selectedId 是从画面上取得的选中的值 string 类型 “1,2,3,4”
