Exeception User-Unhandled - Not Supported in LINQ to Entities. [Answered] RSS

• • Reply
  ikeni

  Member

  4 Points

  8 Posts

  Exeception User-Unhandled - Not Supported in LINQ to Entities.

  Apr 05, 2020 08:50 PM|ikeni|LINK

  Hi - I receive the following error -

  System.NotSupportedException: 'The specified type member 'StockRecord' is not supported in LINQ to Entities. Only initializers, entity members, and entity navigation properties are supported.'

  I have two SQL tables, the Shareholder table which is associated by a FK to the StockRecord table. My objective is to select items from the Shareholder table where the field PropertyPrime contains info in the "search" variable. The field PropertyPrime is a column in the second table called Stockholder.  

  My Shareholder table has a model which includes -

  public partial class Shareholder
  {
        public int ShareholderID { get; set; }
        public int Certificate { get; set; }    //FK to StockRecord Table PK
        ...Other columns....
        public string Notes { get; set; }

        public virtual string PropertyPrime { get; set; }
        public virtual StockRecord StockRecord { get; set; }
  }

  The controller code is as follows  and I receive the error where yellow highlighted -

  public ActionResult Index(string searchBy, string search, string includeItems, int? page)
  {

          var shareholders = db.Shareholders.Include(s => s.StockRecord.PropertyPrime);

          if (search == null) { search = " "; }

          if (searchBy == "PropertyPrime" && includeItems != "B")
  {
  return View(db.Shareholders.Where(s => s.StockRecord.PropertyPrime.Contains(search) && s.Status == includeItems || search == null).ToList().ToPagedList(page ?? 1, 10));
  }
  else if (searchBy == "PropertyPrime" && includeItems == "B")
  {
  return View(db.Shareholders.Where(s => s.StockRecord.PropertyPrime.Contains(search) || search == null).ToList().ToPagedList(page ?? 1, 10));
  }

  
  else if (searchBy == "CertificateTitle" && includeItems != "B")
  {

  return View(db.Shareholders.Where(s => s.LastName.Contains(search) && s.Status == includeItems || search == null).ToList().ToPagedList(page ?? 1, 10));
  }

  else _ = (searchBy == "CertificateTitle" && includeItems == "B");

  {

  return View(db.Shareholders.Where(s => s.LastName.Contains(search) || search == null).ToList().ToPagedList(page ?? 1, 10));
  }

  
  //
  }

  Many Thanks, Ken

• • Reply
  DA924

  Contributor

  4983 Points

  4265 Posts

  Re: Exeception User-Unhandled - Not Supported in LINQ to Entities.

  Apr 05, 2020 09:54 PM|DA924|LINK

  ikeni

  Hi - I receive the following error -

  System.NotSupportedException: 'The specified type member 'StockRecord' is not supported in LINQ to Entities. Only initializers, entity members, and entity navigation properties are supported.'

  I have two SQL tables, the Shareholder table which is associated by a FK to the StockRecord table. My objective is to select items from the Shareholder table where the field PropertyPrime contains info in the "search" variable. The field PropertyPrime is a column in the second table called Stockholder.  

  My Shareholder table has a model which includes -

  public partial class Shareholder
  {
        public int ShareholderID { get; set; }
        public int Certificate { get; set; }    //FK to StockRecord Table PK
        ...Other columns....
        public string Notes { get; set; }

        public virtual string PropertyPrime { get; set; }
        public virtual StockRecord StockRecord { get; set; }
  }

  The controller code is as follows  and I receive the error where yellow highlighted -

  public ActionResult Index(string searchBy, string search, string includeItems, int? page)
  {

          var shareholders = db.Shareholders.Include(s => s.StockRecord.PropertyPrime);

          if (search == null) { search = " "; }

          if (searchBy == "PropertyPrime" && includeItems != "B")
  {
  return View(db.Shareholders.Where(s => s.StockRecord.PropertyPrime.Contains(search) && s.Status == includeItems || search == null).ToList().ToPagedList(page ?? 1, 10));
  }
  else if (searchBy == "PropertyPrime" && includeItems == "B")
  {
  return View(db.Shareholders.Where(s => s.StockRecord.PropertyPrime.Contains(search) || search == null).ToList().ToPagedList(page ?? 1, 10));
  }

  
  else if (searchBy == "CertificateTitle" && includeItems != "B")
  {

  return View(db.Shareholders.Where(s => s.LastName.Contains(search) && s.Status == includeItems || search == null).ToList().ToPagedList(page ?? 1, 10));
  }

  else _ = (searchBy == "CertificateTitle" && includeItems == "B");

  {

  return View(db.Shareholders.Where(s => s.LastName.Contains(search) || search == null).ToList().ToPagedList(page ?? 1, 10));
  }

  
  //
  }

  Many Thanks, Ken

  The message is clear. You cannot  use  StockRecord in the manner you're trying to use it in Linq-2-Entities. I don't even know what you're trying to do. 

  If you find the post has answered your issue, then please mark post as 'answered'.
• • Reply
  jiadongm

  Participant

  1320 Points

  491 Posts

  Re: Exeception User-Unhandled - Not Supported in LINQ to Entities.

  Apr 06, 2020 01:56 AM|jiadongm|LINK

  Hi ikeni,

  ikeni

  return View(db.Shareholders.Where(s => s.StockRecord.PropertyPrime.Contains(search) && s.Status == includeItems || search == null).ToList().ToPagedList(page ?? 1, 10));
  }

  You seem want to query through the properties of associated objects, if so, you should use .include() method first load the associated object.

  For more details, you can refer to

  https://docs.microsoft.com/en-us/ef/ef6/querying/related-data

  https://www.entityframeworktutorial.net/eager-loading-in-entity-framework.aspx

  Best Regards,

  Jiadong Meng

  .NET forums are moving to a new home on Microsoft Q&A, we encourage you to go to Microsoft Q&A for .NET for posting new questions and get involved today.
• • Reply
  ikeni

  Member

  4 Points

  8 Posts

  Re: Exeception User-Unhandled - Not Supported in LINQ to Entities.

  Apr 30, 2020 04:09 PM|ikeni|LINK

  Thank You!