【LINQ to Entities does not recognize the method 'System.DateTime AddDays(Double)' method, and this method cannot be translated into a store expression.】的更多相关文章

LINQ to Entities does not recognize the method 'System.DateTime AddDays(Double)' method, and this method cannot be translated into a store expression.

NormalSubmission=analysis.Count(x=>x.FinishTime<= endTime.AddDays(1))报错linq不能识别 => var endTime = analysis.Select(x => x.EndTime).FirstOrDefault().AddDays(1); NormalSubmission=analysis.Count(x=>x.FinishTime<= endTime), 把方法放到外面就可以了…

LINQ to Entities 不识别方法“System.DateTime AddDays(Double)

今天本想在linq里按照时间筛选一下超时的数据,一共两个字段FeedBackTime(计划反馈时间).EndTime(实际反馈时间).需求是这样的,查找数据库里所有EndTime大于FeedBackTime,且只计算到日,时分秒就不计算了.也就是说 计划时间和实际时间是同一天或实际时间小于计划时间,那么就认为不是超时的. 开始的时候我使用了下面这种方式: query.Where(c =>c.FeedBackTime > c.EndTime.AddDays(1)); 结果报错: LINQ to…

关于.ToList()： LINQ to Entities does not recognize the method ‘xxx’ method, and this method cannot be translated into a store expression.

LINQ to Entities works by translating LINQ queries to SQL queries, then executing the resulting query on the database and converting the result back to application entities. Because of this crossover of two languages, it will only work when SQL-compa…

报错：System.NotSupportedException: LINQ to Entities does not recognize the method

报错:System.NotSupportedException: LINQ to Entities does not recognize the method ...... get_Item(Int32)' method, and this method cannot be translated into a store expression. 在控制器中有如下一段代码: var tempList = SomeService.LoadEntities(c => c.DelFlag == (sho…

mvc ef LINQ to Entities 不识别方法“Int32 Parse(System.String)”，因此该方法无法转换为存储表达式。

private sys_User GetUserInfo() { sys_User model = null; var userId = Convert.ToInt32(AccountHelper.GetAccountUserId()); var list = BLLSingleton.Instance.IUserService.GetListBy(c => c.UserId == userId); if (list != null) model = list.FirstOrDefault();…

LINQ to Entities does not recognize the method , and this method cannot be translated into a store expression 解决办法

根据用户输入的起始日期,查询以起始日期开始的前20条记录,在ASP.NET MVC的Controller代码中这样写: var Logs = db.Log.Take(20); if (!string.IsNullOrEmpty(dateBegin)) { Logs = Logs.Where(a => a.Date >= Convert.ToDateTime(dateBegin)).Take(); } 运行后,出现下面错误信息: 对于这种情况,要清楚:本表达式只是LINQ to Entities…

LINQ to Entities does not recognize the method 'System.DateTime ToDateTime(System.String)' method

System.Data.Objects.EntityFunctions和System.Data.Objects.SqlClient.SqlFunctions中的方法进行比较,如下 where System.Data.Objects.SqlClient.SqlFunctions.DateDiff("s",DateTime.Now,u.Time)>0 where System.Data.Objects.EntityFunctions.DiffSeconds(DateTime.Now,…

LINQ to Entities does not recognize the method 'Int32 ToInt32(System.String)' method, and this method cannot be translated into a store expression

if (!string.IsNullOrEmpty(FarmWorkId)) { data = data.Where(p => p.TypeId == Convert.ToInt32(FarmWorkId)); } 解决方法: if (!string.IsNullOrEmpty(FarmWorkId)) { int i = Convert.ToInt32(FarmWorkId); data = data.Where(p => p.TypeId == i); }…

报错： LINQ to Entities 不识别方法“Int32 Parse(System.String)

断点调试发现报错的语句为: public ActionResult SomeMethod(string someId) { var temp = SomeService.LoadEntities(a => a.ID == int.Parse(someId)); } 原因是:在Lambda表达式内部不能实现数据类型转换.解决方法:在使用Lambda表达式之前,先对数据类型进行转换. public ActionResult SomeMethod(string someId) { int tempIn…

LINQ to Entities 不识别方法“Int32 ToInt32(System.String)”，因此该方法无法转换为存储表达式。

  通常原始代码如下: Where id=Convert.ToInt32(cousid) 更改后代码: Var currentid= Convert.ToInt32(cousid); Wehre id=currentid;…