如何将这些LINQ结果加载到我的ViewModel类中？

Question

我有一个LINQ查询,它返回与我的PictureGallery类匹配的结果.我需要将它们加载到我的ViewModel但我得到以下错误:

无法将类型'System.Linq.IQueryable'隐式转换为'System.Collections.Generic.IEnumerable'.存在显式转换(您是否错过了演员？)

我是C#的新人.如何将"结果"投射到我的"PictureGallery"viewmddel类中？

提前致谢!

控制器:

//Test MediaID
var MediaID = 75;

//Query Results
var Results = from g in DB.Galleries
              join m in DB.Media on g.GalleryID equals m.GalleryID
              where g.GalleryID == GalleryID
              orderby m.MediaDate descending, m.MediaID descending
              select new { g.GalleryTitle, Media = m };

//Create my viewmodel
var Model = new GalleryViewModel
{
    MediaID = MediaID,
    PictureGallery = Results, //This line throws the error.
    PictureCount = Results.Count()
};

的ViewModels:

public class GalleryViewModel
{
    public int? MediaID { get; set; }
    public IEnumerable<PictureGallery> PictureGallery { get; set; }
    public int PictureCount { get; set; }
}

public class PictureGallery
{
    public int GalleryID { get; set; }
    public string GalleryTitle { get; set; }
    public int MediaID { get; set; }
    public string MediaTitle { get; set; }
    public string MediaDesc { get; set; }
    public double Rating { get; set; }
    public int Views { get; set; }
}

Answer 1

将您的查询改为:

//Query Results
var Results = from g in DB.Galleries
              join m in DB.Media on g.GalleryID equals m.GalleryID
              where g.GalleryID == GalleryID
              orderby m.MediaDate descending, m.MediaID descending
              select new PictureGallery {
                                GalleryID = g.GalleryId,
                                GalleryTitle = g.GalleryTitle,
                                MediaID = m.MediaID,
                                MediaTitle = m.MediaTitle,
                                MediaDesc = m.MediaDesc,
                                Rating = m.Rating,
                                Views = m.Views} ;