Search Function With Boost

gistfile1.txt

private void Search()
{
  string SearchKey = WebUtil.GetQueryString("keyword");
  if (string.IsNullOrEmpty(SearchKey))
      return;
  
  List<Item> results = new List<Item>();
  ISearchIndex Index = ContentSearchManager.GetIndex("sitecore_master_index");
  
  using (new Sitecore.Globalization.LanguageSwitcher("en"))
  {
      using (var context = Index.CreateSearchContext())
      {
          List<Item> ResultList = new List<Item>();
  
          var contentPredicate = PredicateBuilder.True<customSearchResultItem>();
          contentPredicate = contentPredicate.And(p => p.Content.Contains(SearchKey));
  
          Sitecore.Data.ID _templateId1 = new Sitecore.Data.ID("{BC073827-8D24-4CCB-9ACB-984028F7341A}");
          Sitecore.Data.ID _templateId2 = new Sitecore.Data.ID("{8813914B-AE26-4462-9003-281370082E61}");
          var templatePredicate = PredicateBuilder.True<customSearchResultItem>();
          templatePredicate = templatePredicate.Or(p => p.TemplateId == _templateId1);
          templatePredicate = templatePredicate.Or(p => p.TemplateId == _templateId2);
  
          string language = Sitecore.Context.Language.ToString();
          var languagePredicate = PredicateBuilder.True<customSearchResultItem>();
          languagePredicate = languagePredicate.And(p => p.Language == language);
  
          var CombinPredicates = PredicateBuilder.True<customSearchResultItem>();
          CombinPredicates = CombinPredicates.And(contentPredicate).Boost(1);
          CombinPredicates = CombinPredicates.And(languagePredicate);
          CombinPredicates = CombinPredicates.Or(templatePredicate.Boost(1));
  
          // execute the search
          IQueryable<SearchResultItem> query = context.GetQueryable<customSearchResultItem>().Where(CombinPredicates);
          results = query.Select(p => p.GetItem()).ToList();
          var hits =  query.GetResults().Hits;
  
          foreach (var item in hits)
          {
              scores.Add(item.Score);
          }
      }
}