ASP.NET MVC: Cannot convert ObjectQuery -> Linq.IQueryable - asp.net-mvc

Question

i must be doing something wrong or maybe i don't get this. I'm trying to fill 'PropAllMenus' (that has a bunch of properties) with data coming from my entity framework. However, when doing the conversion trough a function i get a 'InvaldCastExeption' in my 'WeekMenuRepository'. Here is the code:
PropAllMenus
Public Class PropAllMenus
Private _MenuID As Integer
Public Property MenuID() As Integer
Get
Return _MenuID
End Get
Set(ByVal value As Integer)
_MenuID = value
End Set
End Property
Private _Name As String
Public Property Name() As String
Get
Return _Name
End Get
Set(ByVal value As String)
_Name = value
End Set
End Property
Private _DaypartID As Integer
Public Property DaypartID() As Integer
Get
Return _DaypartID
End Get
Set(ByVal value As Integer)
_DaypartID = value
End Set
End Property
End Class
WeekMenuRepository
Private _db As New EDMWeekmenuEntities()
Public Function ListAllMenus() As IQueryable(Of PropAllMenus) Implements IWeekMenuRepository.ListAllMenus
Dim result = From p In _db.Menus _
Select p
Return result
End Function
HomeController
Dim DoThings As New WeekMenuRepository()
Function Index() As ActionResult
Return View(DoThings.ListAllMenus().ToList)
End Function

Answer 1

PropAllMenus isn't an entity type, so the EF can't implicitly convert an entity type like Menu to it.
In other words, your function result type is IQueryable(Of PropAllMenus), but your query is returning something like ObjectQuery(Of Menu). If you could change your query to return ObjectQuery(Of PropAllMenus) then the implicit cast (when you call Return) to IQueryable would work.
You need to do something like:
Dim result = From p In _db.Menus _
Select New PropAllMenus With
{
.MenuId = p.MenuId,
.Name = p.Name,
// etc.
}
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