将 Int 数组传递给 LINQ 运算符以获取特定对象

Question

我有一个 int 数组，这个数组有对象的 ID，我想把这个数组传递给 LINQ 运算符，并获取所有具有与数组成员相同的 ID 的对象。 我不想使用 for 循环 for 获取这些对象，我只是想知道并学习如何使用数组获取这些对象联机 提前致谢

public IEnumerable<ExhibitionPhoto> GetPhotosById(int[] ids)
{
   return _db.ExhibitionPhotos.Select();
}

型号：

public class ExhibitionPhoto
{
    [Key]
    public int ExhibitionPhotoId { get; set; }
    public int ExhibitionId { get; set; }
    public string PhotoPath { get; set; }

    #region Navigational Properties
    [ForeignKey(nameof(ExhibitionId))]
    public Exhibition Exhibition { get; set; }
}

Answer 1

您可以使用Where() clause with .Any()

public IEnumerable<ExhibitionPhot> GetPhotosById(int[] ids)
{
   return _db.ExhibitionPhotos.Where(x => ids.Any(y => y == x.ExhibitionPhotoId)); 
}

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Where():

Filters a sequence of values based on a predicate.

Any():

Determines whether any element of a sequence exists or satisfies a condition.