Scaffolding EntityFramework 6 Unable to cast object of type 'System.Data.Entity.Core.Objects.ObjectContext' to 'System.Data.Objects.ObjectContext'

EF 6 System.Data.Objects.ObjectContext Error

I recently upgraded from Entities Framework 5 to Entities Framework 6 Alpha 2 and I am getting the following error:...Method not found: 'System.Data.Objects.ObjectContext System.Data.Entity.Infrastructure.IObjectContextAdapter.get_ObjectContext()'....This is getting hit when I call...if (Membership.ValidateUser(model.UserName, model.Password)) {}...

System.InvalidCastException: Unable to cast object of type 'System.Int32' to type 'System.String'

Judging from the exception message your Customer class looks something like this......public class Customer { [StringLength(4)] public int CustomerID { get; set;} } ...Notice that you can't use ...StringLength... on an ...int... property....Get rid of the ...StringLength... and the validation exceptions should go away.

Unable to cast Anonymous Type from 'System.Linq.IQueryable' to 'System.Data.Entity.Core.Objects.ObjectQuery'

As noted by dna2 at the end of his question, this issue was fixed in ...EF 6.0.2.... To upgrade your version of EF, do the following in the Package Manager Console (VS2013 ...VIEW -> Other Windows -> Package Manager Console...)....Update-Package EntityFramework -Version 6.0.2

Upgraded to EF 6 (RTM) - Getting System.Data.Entity.Core.Objects.ObjectContext cannot be used for return type System.Data.Objects

Just upgraded a .NET 4.5 WCF Service, which also has an OData service to use EF 6. The OData service was of course working prior to the upgrade. Now, when attempting to query the OData service or even just browse to it from Visual Studio 2012, I get the following ...Request Error...:...The server encountered an error processing the request. The e...

EF6 Type of context 'System.Data.Entity.Core.Objects.ObjectContext' is not supported

I have a new project created using Visual Studio 2013 with an ADO.NET Entity Data Model (EF6)....Now I have to use some Dynamic Data function (like access to MetaTable object), so I add this code:...MetaModel model = new MetaModel(); model.RegisterContext(() => { return ((System.Data.Entity.Infrastructure.IObjectContextA...

Cannot implicitly convert type System.Data.Entity.Core.Objects.ObjectResult to System.Data.Objects.ObjectResult

I am trying to update an EDMX Stored Procedure and I am getting this error:...Cannot implicitly convert type ...System.Data.Entity.Core.Objects.ObjectResult<X>... to ...System.Data.Objects.ObjectResult<X>...I am using Visual Studio 2012.

cannot convert from 'System.Data.Objects.ObjectParameter' to 'System.Data.Entity.Core.Objects.ObjectParameter'

using System.Data.Object; using System.Data.Objects.DataClasses; ...Replace for:...using System.Data.Entity.Core.Objects; using System.Data.Entity.Core.Objects.DataClasses;

Unable to cast object of type 'System.Data.Entity.Infrastructure.DbQuery' to type 'PagedList.IPagedList'

You are not assigning the results of ...ToPagedList()... to a variable (and therefore not returning ...IPagedList<PublicReport>..., just ...IEnumerable<PublicReport>...). Change your code to...public ActionResult ListReports(int? page) { var pageNumber = page ?? 1; var listOfReports = db.PublicReport.OrderByDescending(d => d.CreatedDat...

Unable to cast object of type 'DBContext.Models.Contact' to type 'System.Data.Entity.Infrastructure.IObjectContextAdapter'

In the ...answer... you have referenced, the answer has this:...var manager = ((IObjectContextAdapter)db).ObjectContext.ObjectStateManager; ^^ || see this is db ...That works because the OP in that question has a type which implements the ...

Unable to cast object of type 'System.Linq.Expressions.MethodCallExpression' to type 'System.Linq.Expressions.LambdaExpression'

You can assign a variable for ..._ratingsProvider.GetRating... first, to avoid the error in the title....After that you will have another error saying entity framework does not support your query. You need something like LINQKit ...https://github.com/scottksmith95/LINQKit.... ...AsExpandable()... and ...Invoke(x, id)... are from LINQKit....using Li...