C# LINQ：分组并加入

我有两种型号：

public partial class Movie
{
    public Movie()
    {
        TimeTables = new HashSet<TimeTable>();
    }

    [Key]
    public int MovieId { get; set; }
    public string MovieName { get; set; }
    public int MovieGenre { get; set; }
    public string MoviePicture { get; set; }
    public string MovieDescription { get; set; }
    public string MovieShortText { get; set; }
    public bool? MovieIs3d { get; set; }
    public bool? MovieIsImax { get; set; }
    public int MovieLanguage { get; set; }
    public bool? MovieSubtitled { get; set; }
    public int? MovieMinimalAge { get; set; }
    public bool? MovieHasDrugs { get; set; }
    public bool? MovieHasViolence { get; set; }
    public bool? MovieHasSex { get; set; }
    public bool? MovieHasSwearing { get; set; }
    public bool? MovieIsScary { get; set; }
    public bool? MovieHasDiscrimination { get; set; }
    public string MovieTrailer { get; set; }
    public int MovieLength { get; set; }
    public int? Genre_GenreId { get; set; }
    public int? Language_LanguageId { get; set; }
    public virtual Genre Genre { get; set; }
    public virtual Language Language { get; set; }
    public virtual ICollection<TimeTable> TimeTables { get; set; }
}

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为什么不先从电影开始，按时间表过滤：

var times = timetablerepo.Movies
            .Where(m => m.TimeTables.Any(t => t.StartDate.Date == <yourdate>));

var times=timetablerepo.Movies
其中（m=>m.TimeTables.Any（t=>t.StartDate.Date==）；

这些答案对您有帮助吗？

var times2 =
            (from s in timetablerepo.TimeTables
             orderby s.StartTime.TimeOfDay
             where s.StartTime.Date == datetime.Date
             select s).Distinct().ToList();

var times = timetablerepo.Movies
            .Where(m => m.TimeTables.Any(t => t.StartDate.Date == <yourdate>));