c# - Specified type member not supported in LINQ to Entities

Question

I have an enum type called StatusTypes

public enum StatusTypes
{
    Open = 1,
    Allocated = 2,
    WorkInProgress = 3,
    WaitingOnRequestor = 4,
    WaitingOnThirdParty = 5,
    Monitoring = 6,
    Testing = 7,
    OnHold = 8,
    Complete = 9,
    SignedOff = 10,
    Reopened = 11
}

I'm trying to use this in my repository....

public IQueryable<Incident> GetAllOutstandingIncidents()
{
    return from i in db.Incidents
               where i.Status != Types.StatusTypes.SignedOff && i.Status != Types.StatusTypes.Complete && i.DeletedDateTime != null
               orderby i.DueDateTime
               select i;
    }

...and then use it in my view...

<tbody>
     <% foreach (var incident in Model.TotalIncidentsOutstandingList) { %>
                <tr>
                    <td><%: incident.IncidentID %></td>
                    <td><%: incident.Caller.NetworkName %></td>
                    <td><%: incident.Title %></td>
                    <td><%: incident.Service.Title %> / <%: incident.Category.Title %> <% if (incident.Subcategory != null) { %> / <%: incident.Subcategory.Title %><% } %></td>
                    <td><%: incident.Priority %></td>
                    <td></td>
                    <td><%: incident.AllocatedTo %></td>
                    <td><%: incident.DueDateTime %></td>
                </tr>
            <% } %>
        </tbody>

... but I'm getting the error "The specified type member 'Status' is not supported in LINQ to Entities. Only initializers, entity members, and entity navigation properties are supported."

Any help gratefully received!

UPDATE TO SHOW incident.cs

public class Incident
{
    public int IncidentID { get; set; }
    public DomainUser Caller { get; set; }

    [Display(Name = "Caller Type")]
    public Types.CallerTypes CallerType { get; set; }

    public Service Service { get; set; }
    public Category Category { get; set; }
    public Subcategory Subcategory { get; set; }
    public string Title { get; set; }

    [Display(Name = "Problem Description")]
    public string ProblemDescription { get; set; }

    public Equipment Equipment { get; set; }

    public Types.ImpactTypes Impact { get; set; }
    public Types.UrgencyTypes Urgency { get; set; }

    [Display(Name = "Priority")]
    public Types.PriorityTypes Priority { get; set; }

    [Display(Name="Estimated time for completion")]
    public DateTime? DueDateTime { get; set; }

    [Display(Name="Date/Time")]
    public DateTime? CreatedDateTime { get; set; }
    public DomainUser CreatedBy { get; set; }

    [Display(Name = "Allocated To")]
    public HelpDeskMember AllocatedTo { get; set; }
    public DateTime? AllocatedDateTime { get; set; }

    public DateTime? ClosedDateTime { get; set; }
    public int? ClosedBy { get; set; }

    public DateTime? ReopenedDateTime { get; set; }
    public int? ReopenedBy { get; set; }

    public DateTime? DeletedDateTime { get; set; }
    public HelpDeskMember DeletedBy { get; set; }

    public Decimal? EstimatedInternalCost { get; set; }
    public Decimal? EstimatedResources { get; set; }
    public Decimal? RealInternalCost { get; set; }
    public Decimal? EstimatedExternalCost { get; set; }
    public Decimal? RealExternalCost { get; set; }
    public Decimal? EstimatedTotalCost { get; set; }
    public Decimal? RealTotalCost { get; set; }

    public string CostCode { get; set; }

    public string TimeRequired { get; set; }
    public string ActualTimeTaken { get; set; }

    public Types.StatusTypes Status { get; set; }

    public string Solution { get; set; }

    public bool UserSignedOff { get; set; }

    public bool OverdueEmailSent { get; set; }
    public bool EscalatedEmailSent { get; set; }

    public ICollection<Note> Notes { get; set; }
    public ICollection<Attachment> Attachments { get; set; }
    public ICollection<HistoryItem> History { get; set; }

    public Incident()
    {
        Notes = new List<Note>();
        Attachments = new List<Attachment>();
        History = new List<HistoryItem>();
    }
}

Answer 1

As I've already said try to cast both part to the int type

public IQueryable<Incident> GetAllOutstandingIncidents()
{
    return from i in db.Incidents
        where (int)i.Status != (int)Types.StatusTypes.SignedOff
            && (int)i.Status != (int)Types.StatusTypes.Complete
            && i.DeletedDateTime != null
        orderby i.DueDateTime
        select i;
}

UPDATE

That's a feature of Code First. You should do following. Change your class so:

[Column("Status", TypeName = "int")]
public int InternalStatus { get; set; }
public StatusTypes Status { get; set; }

And use following query:

context.Incidents.Where(i => i.InternalStatus == (int)StatusTypes.Allocated);

I've found this info here