MySQL连接器-LINQ to实体无法识别该方法
在我的[projest]中,我使用的是MySQL连接器和实体框架。我对以下代码有问题:MySQL连接器-LINQ to实体无法识别该方法,mysql,asp.net-mvc-3,entity-framework,linq-to-entities,Mysql,Asp.net Mvc 3,Entity Framework,Linq To Entities,在我的[projest]中,我使用的是MySQL连接器和实体框架。我对以下代码有问题: int now = DateTime.Now.DayOfYear; var items = (from e in db.Table1 let date = e.Created.AddDays(90) where date.DayOfYear > now select e).ToList();
int now = DateTime.Now.DayOfYear;
var items = (from e in db.Table1
let date = e.Created.AddDays(90)
where date.DayOfYear > now
select e).ToList();
但我得到了错误信息:
LINQ to Entities does not recognize the method 'System.DateTime AddDays(Double)'
method, and this method cannot be translated into a store expression.
如何修复它?您不能在linq查询中使用这些类型的函数,您应该从现在开始减去90天,然后在查询中进行比较
int now = DateTime.Now.DayOfYear.AddDays(-90);
var items = (from e in db.Table1
where e.Created > now
select e).ToList();
您不能在linq查询中使用这些类型的函数,您应该从现在开始减去90天,然后在查询中进行比较
int now = DateTime.Now.DayOfYear.AddDays(-90);
var items = (from e in db.Table1
where e.Created > now
select e).ToList();