Question

有人指出这个问题吗？继续获取“LINQ to Entities不支持指定的类型成员'Date'。仅支持初始值设定项，实体成员和实体导航属性。”

public IEnumerable<Appointment> FindAllAppointmentsWithReminders()
{
    DateTime reminderDate = DateTime.Today.Date;
    IEnumerable<Appointment> apps = RepositorySet    
        .OfType<Appointment>()
        .Include("Client")
        .Where(c => EntityFunctions.TruncateTime(c.Client.Reminder.Date) == reminderDate.Date 
                        && reminderDate.Date > EntityFunctions.TruncateTime(c.StartTime.Date));

    return apps;
}

Answer 1

从您的方法中移除所有.Date但是：

DateTime reminderDate = DateTime.Today.Date;

EntityFramework不支持.Date的{{1}}属性。出于这个原因，存在伪函数Datetime，而对于EntityFunctions.TruncateTime，您已经删除了reminderDate中的时间。

DateTime reminderDate = DateTime.Today.Date

Answer 2

试试这个

public IEnumerable<Appointment> FindAllAppointmentsWithReminders()
{
    DateTime reminderDate = DateTime.Today.Date;
**DateTime NewDate =reminderDate.Date;**
    IEnumerable<Appointment> apps = RepositorySet    
        .OfType<Appointment>()
        .Include("Client")
        .Where(c => EntityFunctions.TruncateTime(c.Client.Reminder.Date) == **NewDate** 
                        && reminderDate.Date > EntityFunctions.TruncateTime(c.StartTime.Date));

    return apps;
}

LINQ WHERE DATE问题

2 个答案: