建立一个高级搜索栏

我想弄清楚如何在我的网站上进行高级搜索功能。我现在使用的代码效率不高，并且会创建一个非常昂贵的查询。什么是创造这样的一个很好的资源/例如：建立一个高级搜索栏

我的搜索控制器：

public ActionResult Index(string q = null, string authors = null, string category = null, decimal rating = 0, string published = null, int completed = 0, int page = 0) 
     { 
      List<string> categories = new List<string>(); 
      List<string> authorss = new List<string>(); 
      DateTime DateBy = new DateTime(); 
      DateTime.TryParse(published, out DateBy); 

      if(!string.IsNullOrEmpty(authors)) 
       authorss = authors.Split(',').ToList(); 
      if (!string.IsNullOrEmpty(category)) 
       categories = category.Split(',').ToList(); 


      IEnumerable<Comic> Comics = db.Comics.Where(i => i.Title.Contains(q)).Include(i => i.ComicRatings).Include(i => i.ComicAuthors).Include("ComicAuthors.User"); 

      if(authorss.Count() >= 1) 
      { 
       Comics = Comics.Where(i => i.ComicAuthors.Where(j => authorss.Contains(j.User.UserName)).GroupBy(j => j.Comic_Id).Where(j => j.Count() >= authorss.Count()).Any()); 
      } 

      if (categories.Count() >= 1) 
      { 
       Comics = Comics.Where(i => i.ComicCategories.Where(j => categories.Contains(j.Category.Name)).GroupBy(j => j.Comic_Id).Where(j => j.Count() >= categories.Count()).Any()); 
      } 

      if (rating != 0) 
      { 
       Comics = Comics.Where(i => i.ComicRatings.Where(j => j.Rating >= rating).Any()); 
      } 

      if (completed == 1) 
      { 
       Comics = Comics.Where(i => i.Completed == false); 
      } 
      else if (completed == 2) 
      { 
       Comics = Comics.Where(i => i.Completed == true); 
      } 

      if (!string.IsNullOrEmpty(published)) 
      { 
       Comics = Comics.Where(i => i.DatePublished >= DateBy); 
      } 

      if(page <= (Comics.Count()/20)) 
       page = 0; 

      Comics = Comics.Skip(page * 20).Take(20); 

      IEnumerable<LocalComicCategoriesModel> testing = helper.getCategories(); 
      ViewSearchModel post = new ViewSearchModel 
      { 
       Comic = Comics.ToList(), 
       Categories = testing 
      }; 

      return View(post); 
     }

来源

2013-08-30 Moe Bataineh