Question

Hi I have a query like this:

var queryGridData = from question in questions
   select new {
      i = question.Id,
      cell = new List<string>() { question.Id.ToString(), question.Note, question.Topic }
   };

The ToString() part needed to convert the int is causing:

LINQ to Entities does not recognize the method 'System.String.ToString()' method, and this method cannot be translated into a store expression.

Hmmmmmmmmmmm. I need it as a string to go into the collection. Any ideas?

Answer 1

I would personally perform just enough of the query in the database to provide the values you want, and do the rest in .NET:

var queryGridData = questions.Select(q => new { q.Id, q.Note, q.Topic })
                             .AsEnumerable() // Do the rest locally
                             .Select(q => new { i = q.Id,
                                                cell = new List<string> { 
                                                    q.Id.ToString(),
                                                    q.Note,
                                                    q.Topic
                                                } });

(This formatting is horrible, but hopefully it’ll be easier to do nicely in an IDE where you’ve got more space 🙂