Not able to return JsonResult

Question

The following query is working successfully.

var tabs = (
                from r in db.TabMasters
                orderby r.colID
                select new { r.         


        

Answer 1

I suspect that it's as simple as pushing the last part into an in-process query using AsEnumerable():

var jsonData = new
{
    total = (int)Math.Ceiling((float)totalRecords / (float)rows),
    page = page,
    records = totalRecords,
    rows = (from r in tabs.AsEnumerable()
            select new { id = r.colID,
                         cell = new[] { r.FirstName, r.LastName } }
           ).ToArray()
};
return Json(jsonData, JsonRequestBehavior.AllowGet);

You may want to pull that query out of the anonymous type initializer, for clarity:

var rows = tabs.AsEnumerable()
               .Select(r => new { id = r.colID,
                                  cell = new[] { r.FirstName, r.LastName })
               .ToArray();

var jsonData = new { 
    total = (int)Math.Ceiling((float)totalRecords / (float)rows),
    page,
    records = totalRecords,
    rows
};