Question

i want to remove repeated record’s from results but distinct don’t do this for me! why???

var results = (from words in _Xplorium.Words
                           join wordFiles in _Xplorium.WordFiles on words.WordId equals wordFiles.WordId
                           join files in _Xplorium.Files on wordFiles.FileId equals files.FileId
                           join urls in _Xplorium.Urls on files.UrlId equals urls.UrlId
                           where files.Title.Contains(query) || files.Description.Contains(query)
                           orderby wordFiles.Count descending                               
                           select new SearchResultItem()
                           {
                               Title = files.Title,
                               Url = urls.Address,
                               Count = wordFiles.Count,
                               CrawledOn = files.CrawledOn,
                               Description = files.Description,
                               Lenght = files.Lenght,
                               UniqueKey = words.WordId + "-" + files.FileId + "-" + urls.UrlId
                           }).Distinct();

Answer 1

You may have to implement your own IEqualityComparer for SearchResultItem.

You can then pass that to Distinct and force it to compare using your code. That way you ensure the comparison is being done how you want.