title: Error 'cannot be initialized in a query result' when trying to get data with Linq
body: <p><strong>ISSUE:</strong></p>
  
  <p>I have an asp.net mvc 3 app. I'm using EF 4.1 and trying out jqGrid.   I'm trying to get data for my jqGrid using the GridData method below.  I get the following error on the group of data starting at 'var jsonData = new...'.  Any ideas?</p>
  
  <p><strong>ERROR:</strong></p>
  
  <p>{"The array type 'System.String[]' cannot be initialized in a query result. 
  Consider using 'System.Collections.Generic.List`1[System.String]' instead."}</p>
  
  <p><strong>GridData Method:</strong></p>
  
  <pre><code>    public JsonResult GridData(string sidx, string sord, int page, int rows)
      {                        
          var result = from a in db.t_harvest_statistics_elk
                       where a.year == "2008" &amp;&amp; a.unit_number == 1
                       orderby a.id
                       select a;
  
  
          int pageIndex = Convert.ToInt32(page) - 1;
          int pageSize = rows;
          int totalRecords = result.Count();   // context.Questions.Count();
          int totalPages = (int)Math.Ceiling((float)totalRecords / (float)pageSize);
  
          var questions = result.Skip(pageIndex * pageSize).Take(pageSize);
  
          var jsonData = new
          {
              total = totalPages,
              page,
              records = totalRecords,
              rows = (
                  from question in questions
                  select new
                  {
                      i = question.id,                                                
                      cell = new string[] { SqlFunctions.StringConvert((double)question.id), SqlFunctions.StringConvert((double)question.total_rec_days), question.year }
  
                  }).ToArray()
          };
  
          return Json(jsonData);
      }
  </code></pre>
  
  <p><strong>HERE IS AN EXAMPLE THAT DOES WORK</strong></p>
  
  <pre><code>public JsonResult DynamicGridData(string sidx, string sord, int page, int rows)
      {
          var context = new HaackOverflowDataContext();
          int pageIndex = Convert.ToInt32(page) - 1;
          int pageSize = rows;
          int totalRecords = context.Questions.Count();
          int totalPages = (int)Math.Ceiling((float)totalRecords / (float)pageSize);
  
          var questions = context.Questions.OrderBy(sidx + " " + sord).Skip(pageIndex * pageSize).Take(pageSize);
  
          var jsonData = new
          {
              total = totalPages,
              page,
              records = totalRecords,
              rows = (
                  from question in questions
                  select new
                  {
                      i = question.Id,
                      cell = new string[] { question.Id.ToString(), question.Votes.ToString(), question.Title }
                  }).ToArray()
          };
          return Json(jsonData);
      }
  </code></pre>