Develop Reference

ASP.NET MVC viewmodel SQL query syntax

I'm trying to convert basic models to model vİew and SQL queries. So what is wrong my queries or other files?
// GET: Cars
public ActionResult Index()
{
List<CarsTrxViewModel> model = db.Database.SqlQuery<CarsTrxViewModel>(SqlCars.CarsTrxByID()).ToList();
return View(model);
// return View(db.Cars.ToList());
}
View model:
public class CarsTrxViewModel
{
public int CarID { get; set; }
public string CarBrand { get; set; }
public string CarModel { get; set; }
[DisplayFormat(ApplyFormatInEditMode = true, DataFormatString = "{0:dd/MM/yyyy HH:mm:ss}")]
public DateTime CreateDate { get; set; }
}
Query:
public static class SqlCars
{
public static string CarsTrxByID()
{
return "select " + " * , " +
"cars.CarID as CarID " +
",cars.CarBrand as CarBrand " +
",cars.CarModel as CarModel " +
",cars.CreateDate as CreateDate " +
"from (SELECT * from [NagisOfflineDB].[dbo].[cars] )";
}
public static string GetCardholderByID()
{
return "SELECT TOP 1 * from [NagisOfflineDB].[dbo].[cars]";
}
}
Model:
public class Cars
{
[Key]
public int CarID { get; set; }
[StringLength(50)]
[Required]
public string CarBrand { get; set; }
[StringLength(250)]
[Required]
public string CarModel { get; set; }
public DateTime CreateDate { get; set; }
}
I'm not join or other operations I'm just select one column in one table and set alias rows so what is wrong my query?
Compiler say your query wrong its error System.Data.SqlClient.SqlException: 'Incorrect syntax near ')'.'
Full version of error
Server Error in '/' Application.
Incorrect syntax near ')'.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Data.SqlClient.SqlException: Incorrect syntax near ')'.
Source Error:
Line 20:
Line 21:
Line 22: List model = db.Database.SqlQuery(SqlCars.CarsTrxByID()).ToList();
And the stack trace
[SqlException (0x80131904): Incorrect syntax near ')'.]
System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action1 wrapCloseInAction) +2552942
System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection, Action1 wrapCloseInAction) +5952492
System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose) +285
System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady) +4169
System.Data.SqlClient.SqlDataReader.TryConsumeMetaData() +58
System.Data.SqlClient.SqlDataReader.get_MetaData() +89
System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString, Boolean isInternal, Boolean forDescribeParameterEncryption, Boolean shouldCacheForAlwaysEncrypted) +430
System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async, Int32 timeout, Task& task, Boolean asyncWrite, Boolean inRetry, SqlDataReader ds, Boolean describeParameterEncryptionRequest) +2598
System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, TaskCompletionSource1 completion, Int32 timeout, Task& task, Boolean& usedCache, Boolean asyncWrite, Boolean inRetry) +1483
System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method) +64
System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method) +240
System.Data.SqlClient.SqlCommand.ExecuteDbDataReader(CommandBehavior behavior) +41
System.Data.Common.DbCommand.ExecuteReader(CommandBehavior behavior) +12
System.Data.Entity.Infrastructure.Interception.DbCommandDispatcher.<Reader>b__c(DbCommand t, DbCommandInterceptionContext1 c) +14
System.Data.Entity.Infrastructure.Interception.InternalDispatcher1.Dispatch(TTarget target, Func3 operation, TInterceptionContext interceptionContext, Action3 executing, Action3 executed) +72
System.Data.Entity.Infrastructure.Interception.DbCommandDispatcher.Reader(DbCommand command, DbCommandInterceptionContext interceptionContext) +402
System.Data.Entity.Internal.InterceptableDbCommand.ExecuteDbDataReader(CommandBehavior behavior) +166
System.Data.Common.DbCommand.ExecuteReader(CommandBehavior behavior) +12
System.Data.Entity.Core.Objects.ObjectContext.ExecuteStoreQueryInternal(String commandText, String entitySetName, ExecutionOptions executionOptions, Object[] parameters) +266
System.Data.Entity.Core.Objects.<>c__DisplayClass691.<ExecuteStoreQueryReliably>b__68() +44
System.Data.Entity.Core.Objects.ObjectContext.ExecuteInTransaction(Func1 func, IDbExecutionStrategy executionStrategy, Boolean startLocalTransaction, Boolean releaseConnectionOnSuccess) +288
System.Data.Entity.Core.Objects.<>c__DisplayClass691.<ExecuteStoreQueryReliably>b__67() +167
System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.Execute(Func1 operation) +190
System.Data.Entity.Core.Objects.ObjectContext.ExecuteStoreQueryReliably(String commandText, String entitySetName, ExecutionOptions executionOptions, Object[] parameters) +462
System.Data.Entity.Core.Objects.ObjectContext.ExecuteStoreQuery(String commandText, ExecutionOptions executionOptions, Object[] parameters) +60
System.Data.Entity.Internal.<>c__DisplayClass141.<ExecuteSqlQuery>b__13() +130
System.Data.Entity.Internal.LazyEnumerator1.MoveNext() +45
System.Collections.Generic.List1..ctor(IEnumerable1 collection) +387
System.Linq.Enumerable.ToList(IEnumerable1 source) +58
NgsOfflineDev.Controllers.CarsController.Index() in C:\Dev\NagisDevOffline\NgsOfflineDev\NgsOfflineDev\Controllers\CarsController.cs:22
lambda_method(Closure , ControllerBase , Object[] ) +61
System.Web.Mvc.ActionMethodDispatcher.Execute(ControllerBase controller, Object[] parameters) +14
System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary2 parameters) +157
System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary2 parameters) +27
System.Web.Mvc.Async.<>c.<BeginInvokeSynchronousActionMethod>b__9_0(IAsyncResult asyncResult, ActionInvocation innerInvokeState) +22
System.Web.Mvc.Async.WrappedAsyncResult2.CallEndDelegate(IAsyncResult asyncResult) +29
System.Web.Mvc.Async.WrappedAsyncResultBase1.End() +49
System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethod(IAsyncResult asyncResult) +32
System.Web.Mvc.Async.<>c__DisplayClass11_0.<InvokeActionMethodFilterAsynchronouslyRecursive>b__0() +58
System.Web.Mvc.Async.<>c__DisplayClass11_2.<InvokeActionMethodFilterAsynchronouslyRecursive>b__2() +228
System.Web.Mvc.Async.<>c__DisplayClass7_0.<BeginInvokeActionMethodWithFilters>b__1(IAsyncResult asyncResult) +10
System.Web.Mvc.Async.WrappedAsyncResult1.CallEndDelegate(IAsyncResult asyncResult) +10
System.Web.Mvc.Async.WrappedAsyncResultBase1.End() +49
System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethodWithFilters(IAsyncResult asyncResult) +34
System.Web.Mvc.Async.<>c__DisplayClass3_6.<BeginInvokeAction>b__4() +35
System.Web.Mvc.Async.<>c__DisplayClass3_1.<BeginInvokeAction>b__1(IAsyncResult asyncResult) +100
System.Web.Mvc.Async.WrappedAsyncResult1.CallEndDelegate(IAsyncResult asyncResult) +10
System.Web.Mvc.Async.WrappedAsyncResultBase1.End() +49
System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction(IAsyncResult asyncResult) +27
System.Web.Mvc.<>c.<BeginExecuteCore>b__152_1(IAsyncResult asyncResult, ExecuteCoreState innerState) +11
System.Web.Mvc.Async.WrappedAsyncVoid1.CallEndDelegate(IAsyncResult asyncResult) +29
System.Web.Mvc.Async.WrappedAsyncResultBase1.End() +49
System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult) +45
System.Web.Mvc.<>c.<BeginExecute>b__151_2(IAsyncResult asyncResult, Controller controller) +13
System.Web.Mvc.Async.WrappedAsyncVoid1.CallEndDelegate(IAsyncResult asyncResult) +22
System.Web.Mvc.Async.WrappedAsyncResultBase1.End() +49
System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult) +26
System.Web.Mvc.Controller.System.Web.Mvc.Async.IAsyncController.EndExecute(IAsyncResult asyncResult) +10
System.Web.Mvc.<>c.<BeginProcessRequest>b__20_1(IAsyncResult asyncResult, ProcessRequestState innerState) +28
System.Web.Mvc.Async.WrappedAsyncVoid1.CallEndDelegate(IAsyncResult asyncResult) +29
System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +49
System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +28
System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +9
System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +9874329
System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step) +48
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +159
Version Information:
Microsoft .NET Framework Version: 4.0.30319
ASP.NET Version: 4.7.3062.0

DropDownList error during application run [duplicate]

This question already has answers here:
There is already an open DataReader associated with this Command which must be closed first
(19 answers)
Closed 5 years ago.
I have problem with DropDownList. When I run application via free hosting I have
Error: There is already an open DataReader associated with this
Command which must be closed first.
With information about source of error:
Line 51: #Html.DropDownList("ScreeningId", null, htmlAttributes: new { #class = "form-control" })
I add additionally files View and Controller:
public class ReservationsController : Controller
{
private AppDbContext db = new AppDbContext();
// GET: Reservations
public ActionResult Index()
{
return View(db.Reservations.ToList());
}
// GET: Reservations/Create
public ActionResult Create()
{
ViewBag.ScreeningId = new SelectList(db.Screenings, "Id", "Description");
HashSet<int> seats = new HashSet<int>(db.Reservations.Select(x => x.SeatNumber));
ViewBag.Seats = seats;
return View();
}
// POST: Reservations/Create
[HttpPost]
[ValidateAntiForgeryToken]
public ActionResult Create([Bind(Include = "Id,FirstName,SecondName,Phone,SeatNumber,ScreeningId")] Reservation reservation)
{
ViewBag.ScreeningId = new SelectList(db.Screenings, "Id", "Description");
if (ModelState.IsValid)
{
// sprawdzamy czy miejsce bylo juz zajete
if (db.Reservations.Select(x => x.SeatNumber).Contains(reservation.SeatNumber))
{
return View(reservation);
}
else
{
db.Reservations.Add(reservation);
db.SaveChanges();
}
if (Session["Login"] != null)
{
return RedirectToAction("Index");
}
return RedirectToAction("Success");
}
return View(reservation);
}
protected override void Dispose(bool disposing)
{
if (disposing)
{
db.Dispose();
}
base.Dispose(disposing);
}
Part of View file
<div class="form-group">
#Html.LabelFor(model => model.Screening, "Seans", htmlAttributes: new { #class = "control-label col-md-2" })
<div class="col-md-10">
#Html.DropDownList("ScreeningId", null, htmlAttributes: new { #class = "form-control" })
#Html.ValidationMessageFor(model => model.Screening, "", new { #class = "text-danger" })
</div>
</div>
[InvalidOperationException: There is already an open DataReader associated with this Command which must be closed first.]
Stack Trace
System.Data.SqlClient.SqlInternalConnectionTds.ValidateConnectionForExecute(SqlCommand command) +1545589
System.Data.SqlClient.SqlConnection.ValidateConnectionForExecute(String method, SqlCommand command) +89
System.Data.SqlClient.SqlCommand.ValidateCommand(String method, Boolean async) +268
System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, TaskCompletionSource`1 completion, Int32 timeout, Task& task, Boolean& usedCache, Boolean asyncWrite, Boolean inRetry) +118
System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method) +64
System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method) +161
System.Data.SqlClient.SqlCommand.ExecuteDbDataReader(CommandBehavior behavior) +41
System.Data.Common.DbCommand.ExecuteReader(CommandBehavior behavior) +12
System.Data.Entity.Infrastructure.Interception.DbCommandDispatcher.<Reader>b__c(DbCommand t, DbCommandInterceptionContext`1 c) +9
System.Data.Entity.Infrastructure.Interception.InternalDispatcher`1.Dispatch(TTarget target, Func`3 operation, TInterceptionContext interceptionContext, Action`3 executing, Action`3 executed) +72
System.Data.Entity.Infrastructure.Interception.DbCommandDispatcher.Reader(DbCommand command, DbCommandInterceptionContext interceptionContext) +356
System.Data.Entity.Internal.InterceptableDbCommand.ExecuteDbDataReader(CommandBehavior behavior) +166
System.Data.Common.DbCommand.ExecuteReader(CommandBehavior behavior) +12
System.Data.Entity.Core.EntityClient.Internal.EntityCommandDefinition.ExecuteStoreCommands(EntityCommand entityCommand, CommandBehavior behavior) +37
[EntityCommandExecutionException: An error occurred while executing the command definition. See the inner exception for details.]
System.Data.Entity.Core.EntityClient.Internal.EntityCommandDefinition.ExecuteStoreCommands(EntityCommand entityCommand, CommandBehavior behavior) +112
System.Data.Entity.Core.Objects.Internal.ObjectQueryExecutionPlan.Execute(ObjectContext context, ObjectParameterCollection parameterValues) +744
System.Data.Entity.Core.Objects.<>c__DisplayClass7.<GetResults>b__6() +97
System.Data.Entity.Core.Objects.ObjectContext.ExecuteInTransaction(Func`1 func, IDbExecutionStrategy executionStrategy, Boolean startLocalTransaction, Boolean releaseConnectionOnSuccess) +288
System.Data.Entity.Core.Objects.<>c__DisplayClass7.<GetResults>b__5() +154
System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.Execute(Func`1 operation) +189
System.Data.Entity.Core.Objects.ObjectQuery`1.GetResults(Nullable`1 forMergeOption) +279
System.Data.Entity.Core.Objects.ObjectQuery`1.Execute(MergeOption mergeOption) +31
System.Data.Entity.Core.Objects.DataClasses.EntityReference`1.Load(MergeOption mergeOption) +139
System.Data.Entity.Core.Objects.DataClasses.RelatedEnd.DeferredLoad() +333
System.Data.Entity.Core.Objects.Internal.LazyLoadBehavior.LoadProperty(TItem propertyValue, String relationshipName, String targetRoleName, Boolean mustBeNull, Object wrapperObject) +87
System.Data.Entity.Core.Objects.Internal.<>c__DisplayClass7`2.<GetInterceptorDelegate>b__2(TProxy proxy, TItem item) +106
System.Data.Entity.DynamicProxies.Screening_333144174B6E44255ACF2CFB15F4499A880DB4ECDBA71E01178031C116125BB8.get_Film() +23
CinemaTicketReservation.Models.Screening.get_Description() +34
[TargetInvocationException: Property accessor 'Description' on object 'System.Data.Entity.DynamicProxies.Screening_333144174B6E44255ACF2CFB15F4499A880DB4ECDBA71E01178031C116125BB8' threw the following exception:'An error occurred while executing the command definition. See the inner exception for details.']
System.ComponentModel.ReflectPropertyDescriptor.GetValue(Object component) +378
System.Web.UI.DataBinder.GetPropertyValue(Object container, String propName) +87
System.Web.UI.DataBinder.Eval(Object container, String[] expressionParts) +86
System.Web.UI.DataBinder.Eval(Object container, String expression) +95
System.Web.Mvc.MultiSelectList.Eval(Object container, String expression) +35
System.Web.Mvc.<>c__DisplayClass2.<GetListItemsWithValueField>b__1(Object item) +86
System.Linq.WhereSelectEnumerableIterator`2.MoveNext() +164
System.Collections.Generic.List`1..ctor(IEnumerable`1 collection) +387
System.Linq.Enumerable.ToList(IEnumerable`1 source) +58
System.Web.Mvc.MultiSelectList.GetListItemsWithValueField() +145
System.Web.Mvc.MultiSelectList.GetListItems() +44
System.Web.Mvc.MultiSelectList.GetEnumerator() +8
System.Collections.Generic.List`1..ctor(IEnumerable`1 collection) +375
System.Linq.Enumerable.ToList(IEnumerable`1 source) +58
CinemaTicketReservation.Controllers.ReservationsController.Create() +248
lambda_method(Closure , ControllerBase , Object[] ) +62
System.Web.Mvc.ActionMethodDispatcher.Execute(ControllerBase controller, Object[] parameters) +14
System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters) +157
System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +27
System.Web.Mvc.Async.AsyncControllerActionInvoker.<BeginInvokeSynchronousActionMethod>b__39(IAsyncResult asyncResult, ActionInvocation innerInvokeState) +22
System.Web.Mvc.Async.WrappedAsyncResult`2.CallEndDelegate(IAsyncResult asyncResult) +29
System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +49
System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethod(IAsyncResult asyncResult) +32
System.Web.Mvc.Async.AsyncInvocationWithFilters.<InvokeActionMethodFilterAsynchronouslyRecursive>b__3d() +50
System.Web.Mvc.Async.<>c__DisplayClass46.<InvokeActionMethodFilterAsynchronouslyRecursive>b__3f() +228
System.Web.Mvc.Async.<>c__DisplayClass33.<BeginInvokeActionMethodWithFilters>b__32(IAsyncResult asyncResult) +10
System.Web.Mvc.Async.WrappedAsyncResult`1.CallEndDelegate(IAsyncResult asyncResult) +10
System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +49
System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethodWithFilters(IAsyncResult asyncResult) +34
System.Web.Mvc.Async.<>c__DisplayClass2b.<BeginInvokeAction>b__1c() +26
System.Web.Mvc.Async.<>c__DisplayClass21.<BeginInvokeAction>b__1e(IAsyncResult asyncResult) +100
System.Web.Mvc.Async.WrappedAsyncResult`1.CallEndDelegate(IAsyncResult asyncResult) +10
System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +49
System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction(IAsyncResult asyncResult) +27
System.Web.Mvc.Controller.<BeginExecuteCore>b__1d(IAsyncResult asyncResult, ExecuteCoreState innerState) +13
System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +29
System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +49
System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult) +36
System.Web.Mvc.Controller.<BeginExecute>b__15(IAsyncResult asyncResult, Controller controller) +12
System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +22
System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +49
System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult) +26
System.Web.Mvc.Controller.System.Web.Mvc.Async.IAsyncController.EndExecute(IAsyncResult asyncResult) +10
System.Web.Mvc.MvcHandler.<BeginProcessRequest>b__5(IAsyncResult asyncResult, ProcessRequestState innerState) +21
System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +29
System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +49
System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +28
System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +9
System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +9987157
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +155
I saw in some topics, that MARS (MultipleActiveResultSets=true) is needed here. I already add it, and still it's not working. Do you have some ideas?
This topic have reference to:
dropdownlist looks OK but not working [duplicate]

I can see architectural problems in your code.
You are calling the AppDbContext on the controller which is wrong and will result in a lot of errors. you have declared and instationated dbcontext on the ReservationsController but you are not disposing off the context after use.
Instead use an ApplicationService Class, and inject the interface on the controller. as such you can go to the ApplicationService class and use: using (AppDbContext db){return db.Reservations();} as such the context is disposed off.

Can't update a foreign key on an attached graph

I have an attached graph object and I can't figure out how to change the foreign key on a record. I have a Load record saved in my db. I retrieve said record by id with tracking on. I
public partial class Load
{
[Key]
public virtual int Id {get;set;}
[Required]
public virtual int AccountId { get; set; }
public virtual Account Account { get; set; }
[Required]
public virtual int CustomerId { get; set; }
[ForeignKey("CustomerId")]
public virtual Customer Customer { get; set; }
}
I then retrieve the customer record that I want to associate with the Load record
public partial class Customer
{
[Key]
public virtual int Id {get;set;}
[Required]
[MaxLength(100)]
public virtual string Name { get; set; }
}
No matter what I do, I get some sort of exception is thrown.
var customer = context.Customers.Where(x => x.Id == customerId).SingleOrDefault();
load.Customer = customer;
load.CustomerId = customer.Id;
load.ModifiedByApplicationUserId = userId;
load.ModifiedDateTime = DateTime.Now;
context.Entry(load).State = EntityState.Modified;
context.SaveChanges();
What is the proper way to go about changing the foreign key relationship on an attached graph object?
Edit. I have added the exception.
[InvalidOperationException: Attaching an entity of type 'Triton.Core.Models.Identity.ApplicationUser' failed because another entity of the same type already has the same primary key value. This can happen when using the 'Attach' method or setting the state of an entity to 'Unchanged' or 'Modified' if any entities in the graph have conflicting key values. This may be because some entities are new and have not yet received database-generated key values. In this case use the 'Add' method or the 'Added' entity state to track the graph and then set the state of non-new entities to 'Unchanged' or 'Modified' as appropriate.]
System.Data.Entity.Core.Objects.ObjectContext.AttachSingleObject(IEntityWrapper wrappedEntity, EntitySet entitySet) +690
System.Data.Entity.Core.Objects.DataClasses.RelatedEnd.AddEntityToObjectStateManager(IEntityWrapper wrappedEntity, Boolean doAttach) +130
System.Data.Entity.Core.Objects.DataClasses.EntityReference.AddEntityToObjectStateManager(IEntityWrapper wrappedEntity, Boolean doAttach) +65
System.Data.Entity.Core.Objects.DataClasses.RelatedEnd.AddGraphToObjectStateManager(IEntityWrapper wrappedEntity, Boolean relationshipAlreadyExists, Boolean addRelationshipAsUnchanged, Boolean doAttach) +67
System.Data.Entity.Core.Objects.DataClasses.RelatedEnd.IncludeEntity(IEntityWrapper wrappedEntity, Boolean addRelationshipAsUnchanged, Boolean doAttach) +340
System.Data.Entity.Core.Objects.DataClasses.EntityReference1.Include(Boolean addRelationshipAsUnchanged, Boolean doAttach) +209
System.Data.Entity.Core.Objects.DataClasses.RelationshipManager.AddRelatedEntitiesToObjectStateManager(Boolean doAttach) +164
System.Data.Entity.Core.Objects.ObjectContext.AttachTo(String entitySetName, Object entity) +510
System.Data.Entity.Internal.Linq.<>c__DisplayClassa.<Attach>b__9() +97
System.Data.Entity.Internal.Linq.InternalSet1.ActOnSet(Action action, EntityState newState, Object entity, String methodName) +354
System.Data.Entity.Internal.Linq.InternalSet1.Attach(Object entity) +200
System.Data.Entity.Internal.InternalEntityEntry.set_State(EntityState value) +357
System.Data.Entity.Infrastructure.DbEntityEntry1.set_State(EntityState value) +42
Triton.Service.LoadService.UpdateCustomer(Load load, Int32 customerId, Int32 userId) in d:\BitBucket\trunk\Triton\Triton.Service\LoadService.cs:73
Triton.Web.Controllers.LoadsController.Customer(LoadViewModel model) in d:\BitBucket\trunk\Triton\Triton.Web\Controllers\LoadsController.cs:138
lambda_method(Closure , ControllerBase , Object[] ) +180
System.Web.Mvc.ActionMethodDispatcher.Execute(ControllerBase controller, Object[] parameters) +59
System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary2 parameters) +434
System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary2 parameters) +60
System.Web.Mvc.Async.ActionInvocation.InvokeSynchronousActionMethod() +76
System.Web.Mvc.Async.AsyncControllerActionInvoker.b__39(IAsyncResult asyncResult, ActionInvocation innerInvokeState) +36
System.Web.Mvc.Async.WrappedAsyncResult2.CallEndDelegate(IAsyncResult asyncResult) +73
System.Web.Mvc.Async.WrappedAsyncResultBase1.End() +136
System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +102
System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethod(IAsyncResult asyncResult) +49
Castle.Proxies.AsyncControllerActionInvokerProxy.EndInvokeActionMethod_callback(IAsyncResult asyncResult) +42
Castle.Proxies.Invocations.AsyncControllerActionInvoker_EndInvokeActionMethod.InvokeMethodOnTarget() +103
Castle.DynamicProxy.AbstractInvocation.Proceed() +117
Glimpse.Core.Extensibility.CastleInvocationToAlternateMethodContextAdapter.Proceed() +48
Glimpse.Mvc.AlternateType.EndInvokeActionMethod.NewImplementation(IAlternateMethodContext context) +152
Glimpse.Core.Extensibility.AlternateTypeToCastleInterceptorAdapter.Intercept(IInvocation invocation) +183
Castle.DynamicProxy.AbstractInvocation.Proceed() +483
Castle.Proxies.AsyncControllerActionInvokerProxy.EndInvokeActionMethod(IAsyncResult asyncResult) +203
System.Web.Mvc.Async.AsyncInvocationWithFilters.b__3d() +117
System.Web.Mvc.Async.<>c__DisplayClass46.b__3f() +323
System.Web.Mvc.Async.<>c__DisplayClass46.b__3f() +323
System.Web.Mvc.Async.<>c__DisplayClass33.b__32(IAsyncResult asyncResult) +44
System.Web.Mvc.Async.WrappedAsyncResult1.CallEndDelegate(IAsyncResult asyncResult) +47
System.Web.Mvc.Async.WrappedAsyncResultBase1.End() +136
System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +102
System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethodWithFilters(IAsyncResult asyncResult) +50
System.Web.Mvc.Async.<>c__DisplayClass2b.b__1c() +72
System.Web.Mvc.Async.<>c__DisplayClass21.b__1e(IAsyncResult asyncResult) +184
System.Web.Mvc.Async.WrappedAsyncResult1.CallEndDelegate(IAsyncResult asyncResult) +42
System.Web.Mvc.Async.WrappedAsyncResultBase1.End() +133
System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +56
System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction(IAsyncResult asyncResult) +40
System.Web.Mvc.Controller.b__1d(IAsyncResult asyncResult, ExecuteCoreState innerState) +34
System.Web.Mvc.Async.WrappedAsyncVoid1.CallEndDelegate(IAsyncResult asyncResult) +70
System.Web.Mvc.Async.WrappedAsyncResultBase1.End() +139
System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +59
System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +40
System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult) +44
System.Web.Mvc.Controller.b__15(IAsyncResult asyncResult, Controller controller) +39
System.Web.Mvc.Async.WrappedAsyncVoid1.CallEndDelegate(IAsyncResult asyncResult) +62
System.Web.Mvc.Async.WrappedAsyncResultBase1.End() +139
System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +59
System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +40
System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult) +39
System.Web.Mvc.Controller.System.Web.Mvc.Async.IAsyncController.EndExecute(IAsyncResult asyncResult) +39
System.Web.Mvc.MvcHandler.b__5(IAsyncResult asyncResult, ProcessRequestState innerState) +39
System.Web.Mvc.Async.WrappedAsyncVoid1.CallEndDelegate(IAsyncResult asyncResult) +70
System.Web.Mvc.Async.WrappedAsyncResultBase1.End() +139
System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +59
System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +40
System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +40
System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +38
System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +9651688
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +155

It turned out I had an object in a sub class that was being referenced so EF was trying to add it to the graph. Once I nullified that object, everything worked properly.

Unable to fix 'The object cannot be deleted because it was not found in the ObjectStateManager.' [duplicate]

This question already has answers here:
The object cannot be deleted because it was not found in the ObjectStateManager
(10 answers)
Closed 8 years ago.
I am getting the following error when I try to delete an object from the datase using LINQ.
The object cannot be deleted because it was not found in the ObjectStateManager.
Note: When I try to run the query directly from the database, the object is deleted.
Code where I am getting the error:
public void deleteStorage(CommonLayer.TblNewsStorage storageToDelete)
{
using(DBTicketSystemEntities e = new DBTicketSystemEntities())
{
e.TblNewsStorage.DeleteObject(storageToDelete);
e.SaveChanges();
}
}
Stack Trace:
[InvalidOperationException: The object cannot be deleted because it was not found in the ObjectStateManager.]
System.Data.Objects.ObjectContext.DeleteObject(Object entity, EntitySet expectedEntitySet) +3061568
System.Data.Objects.ObjectSet`1.DeleteObject(TEntity entity) +18
DataLayer.DAStorage.deleteStorage(TblNewsStorage storageToDelete) in C:\Users\Eric\Desktop\Development\Library News\LibraryNews\DataLayer\DAStorage.cs:38
BusinessLayer.Storage.deleteStorage(String id) in C:\Users\Eric\Desktop\Development\Library News\LibraryNews\BusinessLayer\Storage.cs:43
NewsLibrary.Controllers.StorageController.Delete(TblNewsStorage storage) in C:\Users\Eric\Desktop\Development\Library News\LibraryNews\NewsLibrary\Controllers\StorageController.cs:61
lambda_method(Closure , ControllerBase , Object[] ) +180
System.Web.Mvc.ActionMethodDispatcher.Execute(ControllerBase controller, Object[] parameters) +14
System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters) +208
System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +27
System.Web.Mvc.Async.<>c__DisplayClass42.<BeginInvokeSynchronousActionMethod>b__41() +28
System.Web.Mvc.Async.<>c__DisplayClass8`1.<BeginSynchronous>b__7(IAsyncResult _) +10
System.Web.Mvc.Async.WrappedAsyncResult`1.End() +57
System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethod(IAsyncResult asyncResult) +48
System.Web.Mvc.Async.<>c__DisplayClass39.<BeginInvokeActionMethodWithFilters>b__33() +57
System.Web.Mvc.Async.<>c__DisplayClass4f.<InvokeActionMethodFilterAsynchronously>b__49() +223
System.Web.Mvc.Async.<>c__DisplayClass37.<BeginInvokeActionMethodWithFilters>b__36(IAsyncResult asyncResult) +10
System.Web.Mvc.Async.WrappedAsyncResult`1.End() +57
System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethodWithFilters(IAsyncResult asyncResult) +48
System.Web.Mvc.Async.<>c__DisplayClass2a.<BeginInvokeAction>b__20() +24
System.Web.Mvc.Async.<>c__DisplayClass25.<BeginInvokeAction>b__22(IAsyncResult asyncResult) +102
System.Web.Mvc.Async.WrappedAsyncResult`1.End() +57
System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction(IAsyncResult asyncResult) +43
System.Web.Mvc.<>c__DisplayClass1d.<BeginExecuteCore>b__18(IAsyncResult asyncResult) +14
System.Web.Mvc.Async.<>c__DisplayClass4.<MakeVoidDelegate>b__3(IAsyncResult ar) +23
System.Web.Mvc.Async.WrappedAsyncResult`1.End() +62
System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult) +57
System.Web.Mvc.Async.<>c__DisplayClass4.<MakeVoidDelegate>b__3(IAsyncResult ar) +23
System.Web.Mvc.Async.WrappedAsyncResult`1.End() +62
System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult) +47
System.Web.Mvc.Controller.System.Web.Mvc.Async.IAsyncController.EndExecute(IAsyncResult asyncResult) +10
System.Web.Mvc.<>c__DisplayClass8.<BeginProcessRequest>b__3(IAsyncResult asyncResult) +25
System.Web.Mvc.Async.<>c__DisplayClass4.<MakeVoidDelegate>b__3(IAsyncResult ar) +23
System.Web.Mvc.Async.WrappedAsyncResult`1.End() +62
System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +47
System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +9
System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +9688704
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +155

Try sending the ID of the object you want to delete then query it inside your context instead of sending the whole object :
public void deleteStorage(int ID)
{
using(DBTicketSystemEntities e = new DBTicketSystemEntities())
{
//Like That
var selectedItem = e.TblNewsStorage.Where( t => t.ID == ID).FirstOrDefault();
e.TblNewsStorage.DeleteObject(selectedItem);
e.SaveChanges();
}
}

try below code:-
e.TblNewsStorage(storageToDelete).State = System.Data.EntityState.Deleted;
e.SaveChanges();
OR
e.TblNewsStorage.Attach(storageToDelete);
e.TblNewsStorage.Remove(storageToDelete);
e.SaveChanges();

Method not found: 'System.Object Newtonsoft.Json.Linq.JToken.ToObject(System.Type)'

Our mvc project with json.net running without any problem on every developer except the one with the new windows 8.1 system. How can we find source of the method not found problem ?
details of the exception ;
[MissingMethodException: Method not found: 'System.Object Newtonsoft.Json.Linq.JToken.ToObject(System.Type)'.]
ExtensionMethods.Eval(Object o, String propertyName) in c:\Users\maxSEPHIROTH\Documents\Visual Studio 2012\Projects\LogiSysMvc\LogiSysMvc\ClassLibrary\ExtensionMethods.cs:136
ASP.<>c__DisplayClass20.<Execute>b__1(CallbackPanelSettings settings) in c:\Users\maxSEPHIROTH\Documents\Visual Studio 2012\Projects\LogiSysMvc\LogiSysMvc\LogiSysMvc\Views\Genel_Personel\GridViewEditFormPartial.cshtml:430
DevExpress.Web.Mvc.UI.ExtensionsFactory.CreateExtension(Action`1 method) +137
DevExpress.Web.Mvc.UI.ExtensionsFactory.CallbackPanel(Action`1 method) +43
ASP._Page_Views_Genel_Personel_GridViewEditFormPartial_cshtml.Execute() in c:\Users\maxSEPHIROTH\Documents\Visual Studio 2012\Projects\LogiSysMvc\LogiSysMvc\LogiSysMvc\Views\Genel_Personel\GridViewEditFormPartial.cshtml:11
System.Web.WebPages.WebPageBase.ExecutePageHierarchy() +271
System.Web.Mvc.WebViewPage.ExecutePageHierarchy() +121
System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage) +191
System.Web.Mvc.RazorView.RenderView(ViewContext viewContext, TextWriter writer, Object instance) +762
System.Web.Mvc.BuildManagerCompiledView.Render(ViewContext viewContext, TextWriter writer) +382
System.Web.Mvc.ViewResultBase.ExecuteResult(ControllerContext context) +431
System.Web.Mvc.ControllerActionInvoker.InvokeActionResult(ControllerContext controllerContext, ActionResult actionResult) +39
System.Web.Mvc.<>c__DisplayClass1a.<InvokeActionResultWithFilters>b__17() +74
System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation) +388
System.Web.Mvc.<>c__DisplayClass1c.<InvokeActionResultWithFilters>b__19() +72
System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext controllerContext, IList`1 filters, ActionResult actionResult) +303
System.Web.Mvc.Async.<>c__DisplayClass2a.<BeginInvokeAction>b__20() +155
System.Web.Mvc.Async.<>c__DisplayClass25.<BeginInvokeAction>b__22(IAsyncResult asyncResult) +184
System.Web.Mvc.Async.WrappedAsyncResult`1.End() +136
System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +56
System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction(IAsyncResult asyncResult) +66
System.Web.Mvc.<>c__DisplayClass1d.<BeginExecuteCore>b__18(IAsyncResult asyncResult) +40
System.Web.Mvc.Async.<>c__DisplayClass4.<MakeVoidDelegate>b__3(IAsyncResult ar) +47
System.Web.Mvc.Async.WrappedAsyncResult`1.End() +151
System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +59
System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +40
System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult) +68
System.Web.Mvc.Async.<>c__DisplayClass4.<MakeVoidDelegate>b__3(IAsyncResult ar) +47
System.Web.Mvc.Async.WrappedAsyncResult`1.End() +151
System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +59
System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +40
System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult) +65
System.Web.Mvc.Controller.System.Web.Mvc.Async.IAsyncController.EndExecute(IAsyncResult asyncResult) +39
System.Web.Mvc.<>c__DisplayClass8.<BeginProcessRequest>b__3(IAsyncResult asyncResult) +45
System.Web.Mvc.Async.<>c__DisplayClass4.<MakeVoidDelegate>b__3(IAsyncResult ar) +47
System.Web.Mvc.Async.WrappedAsyncResult`1.End() +151
System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +59
System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +40
System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +66
System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +38
System.Web.Mvc.<>c__DisplayClassa.<EndProcessRequest>b__9() +44
System.Web.Mvc.<>c__DisplayClass4.<Wrap>b__3() +34
System.Web.Mvc.ServerExecuteHttpHandlerWrapper.Wrap(Func`1 func) +69
System.Web.Mvc.ServerExecuteHttpHandlerWrapper.Wrap(Action action) +123
System.Web.Mvc.ServerExecuteHttpHandlerAsyncWrapper.EndProcessRequest(IAsyncResult result) +133
System.Web.HttpServerUtility.ExecuteInternal(IHttpHandler handler, TextWriter writer, Boolean preserveForm, Boolean setPreviousPage, VirtualPath path, VirtualPath filePath, String physPath, Exception error, String queryStringOverride) +1097

You should check Newtonsoft.Json library version on that computer (also in GAC). Non-generic ToObject methods where introduced in November last year, so there is slight chance this causes problem.