I'm using Entity Framework and a stored proc that takes a table valued parameter (TVP). To do this, I need to create a DataTable and populate it like so:
var i = new DataTable();
i.Columns.Add("Type", typeof(byte));
i.Columns.Add("Code", typeof(int));
i.Rows.Add(0, 0);
i.Rows.Add(2, 31);
i.Rows.Add(4, 3121);
i.Rows.Add(4, 3111);
And then I can pass it as a parameter to a call to SqlQuery
var result = ctx.Database.SqlQuery<MyResult>("select * from myStoredProc(#i)",
new SqlParameter("#i",i) { TypeName = "MyTVP" });
Now to simplify this, especially recreating the columns every time, I though I could subclass DataTable, something like this:
public class MyTVP : DataTable
{
public MyTVP()
: base()
{
Columns.Add("Type", typeof(byte));
Columns.Add("Code", typeof(int));
}
}
So now my code to create and populate the table is this:
var i = new MyTVP();
i.Rows.Add(0, 0);
i.Rows.Add(2, 31);
i.Rows.Add(4, 3121);
i.Rows.Add(4, 3111);
But if I try to pass this as a parameter to the stored proc I get an ArgumentException:
No mapping exists from object type MyTVP to a known managed provider native type.
Is there a way to subclass DataTable such that you can pass it to the stored proc?
I worked around this problem by having MyTVP wrap a DataTable instead and then have a property that exposes the DataTable, but it's a little messy.
Stacktrace:
at System.Data.SqlClient.MetaType.GetMetaTypeFromValue(Type dataType, Object value, Boolean inferLen, Boolean streamAllowed)
at System.Data.SqlClient.SqlParameter.GetMetaTypeOnly()
at System.Data.SqlClient.SqlParameter.get_DbType()
at System.Data.Entity.Infrastructure.Interception.DatabaseLogFormatter.LogParameter[TResult](DbCommand command, DbCommandInterceptionContext`1 interceptionContext, DbParameter parameter)
at System.Data.Entity.Infrastructure.Interception.DatabaseLogFormatter.LogCommand[TResult](DbCommand command, DbCommandInterceptionContext`1 interceptionContext)
at System.Data.Entity.Infrastructure.Interception.DatabaseLogFormatter.Executing[TResult](DbCommand command, DbCommandInterceptionContext`1 interceptionContext)
at System.Data.Entity.Infrastructure.Interception.DatabaseLogFormatter.ReaderExecuting(DbCommand command, DbCommandInterceptionContext`1 interceptionContext)
at System.Data.Entity.Infrastructure.Interception.DbCommandDispatcher.<Reader>b__d(IDbCommandInterceptor i, DbCommand t, DbCommandInterceptionContext`1 c)
at System.Data.Entity.Infrastructure.Interception.InternalDispatcher`1.Dispatch[TTarget,TInterceptionContext,TResult](TTarget target, Func`3 operation, TInterceptionContext interceptionContext, Action`3 executing, Action`3 executed)
at System.Data.Entity.Infrastructure.Interception.DbCommandDispatcher.Reader(DbCommand command, DbCommandInterceptionContext interceptionContext)
at System.Data.Entity.Internal.InterceptableDbCommand.ExecuteDbDataReader(CommandBehavior behavior)
at System.Data.Common.DbCommand.ExecuteReader(CommandBehavior behavior)
at System.Data.Entity.Core.Objects.ObjectContext.ExecuteStoreQueryInternal[TElement](String commandText, String entitySetName, ExecutionOptions executionOptions, Object[] parameters)
at System.Data.Entity.Core.Objects.ObjectContext.<>c__DisplayClass65`1.<ExecuteStoreQueryReliably>b__64()
at System.Data.Entity.Core.Objects.ObjectContext.ExecuteInTransaction[T](Func`1 func, IDbExecutionStrategy executionStrategy, Boolean startLocalTransaction, Boolean releaseConnectionOnSuccess)
at System.Data.Entity.Core.Objects.ObjectContext.<>c__DisplayClass65`1.<ExecuteStoreQueryReliably>b__63()
at System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.Execute[TResult](Func`1 operation)
at System.Data.Entity.Core.Objects.ObjectContext.ExecuteStoreQueryReliably[TElement](String commandText, String entitySetName, ExecutionOptions executionOptions, Object[] parameters)
at System.Data.Entity.Core.Objects.ObjectContext.ExecuteStoreQuery[TElement](String commandText, ExecutionOptions executionOptions, Object[] parameters)
at System.Data.Entity.Internal.InternalContext.<>c__DisplayClass14`1.<ExecuteSqlQuery>b__13()
at System.Data.Entity.Internal.LazyEnumerator`1.MoveNext()
at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)
at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source)
at ConsoleApplication2.Program.Main(String[] args) in c:\Users\matt.burland\Documents\Visual Studio 2013\Projects\ConsoleApplication2\ConsoleApplication2\Program.cs:line 72
at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
Try changing the parameter to:
new SqlParameter("#i", i) { TypeName = "MyTVP", SqlDbType = SqlDbType.Structured }
Another option would be instead of creating a new type create a DataTable factory that create the datatables with the right columns on it.
Related
i am trying to recreate this sample
https://learn.microsoft.com/en-us/ef/ef6/modeling/code-first/migrations/
I did everything according to the text, the program compiles fine, but then it fails creating the database
It seems like the db file
'C:\Users\WolfgangConsoleApp4.BlogContext.mdf' is missing a \ after Wolfgang.
But I do not know where to enter the path correctly.
On the laptop in my company I could rebuild and run the sample code without errors.
this is the complete exception text:
System.Data.SqlClient.SqlException
HResult=0x80131904
Nachricht = CREATE FILE encountered operating system error 5(Zugriff verweigert) while attempting to open or create the physical file 'C:\Users\WolfgangConsoleApp4.BlogContext.mdf'.
CREATE DATABASE failed. Some file names listed could not be created. Check related errors.
Quelle = .Net SqlClient Data Provider
Stapelüberwachung:
bei System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction)
bei System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction)
bei System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose)
bei System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady)
bei System.Data.SqlClient.SqlCommand.RunExecuteNonQueryTds(String methodName, Boolean async, Int32 timeout, Boolean asyncWrite)
bei System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(TaskCompletionSource`1 completion, String methodName, Boolean sendToPipe, Int32 timeout, Boolean& usedCache, Boolean asyncWrite, Boolean inRetry)
bei System.Data.SqlClient.SqlCommand.ExecuteNonQuery()
bei System.Data.Entity.Infrastructure.Interception.DbCommandDispatcher.<>c.<NonQuery>b__4_0(DbCommand t, DbCommandInterceptionContext`1 c)
bei System.Data.Entity.Infrastructure.Interception.InternalDispatcher`1.Dispatch[TTarget,TInterceptionContext,TResult](TTarget target, Func`3 operation, TInterceptionContext interceptionContext, Action`3 executing, Action`3 executed)
bei System.Data.Entity.Infrastructure.Interception.DbCommandDispatcher.NonQuery(DbCommand command, DbCommandInterceptionContext interceptionContext)
bei System.Data.Entity.SqlServer.SqlProviderServices.<>c__DisplayClass52_0.<CreateDatabaseFromScript>b__0(DbConnection conn)
bei System.Data.Entity.SqlServer.SqlProviderServices.<>c__DisplayClass60_0.<UsingConnection>b__0()
bei System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.<>c__DisplayClass2_0.<Execute>b__0()
bei System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.Execute[TResult](Func`1 operation)
bei System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.Execute(Action operation)
bei System.Data.Entity.SqlServer.SqlProviderServices.UsingConnection(DbConnection sqlConnection, Action`1 act)
bei System.Data.Entity.SqlServer.SqlProviderServices.UsingMasterConnection(DbConnection sqlConnection, Action`1 act)
bei System.Data.Entity.SqlServer.SqlProviderServices.CreateDatabaseFromScript(Nullable`1 commandTimeout, DbConnection sqlConnection, String createDatabaseScript)
bei System.Data.Entity.SqlServer.SqlProviderServices.DbCreateDatabase(DbConnection connection, Nullable`1 commandTimeout, StoreItemCollection storeItemCollection)
bei System.Data.Entity.Core.Common.DbProviderServices.CreateDatabase(DbConnection connection, Nullable`1 commandTimeout, StoreItemCollection storeItemCollection)
bei System.Data.Entity.Core.Objects.ObjectContext.CreateDatabase()
bei System.Data.Entity.Migrations.Utilities.DatabaseCreator.Create(DbConnection connection)
bei System.Data.Entity.Migrations.DbMigrator.EnsureDatabaseExists(Action mustSucceedToKeepDatabase)
bei System.Data.Entity.Migrations.DbMigrator.Update(String targetMigration)
bei System.Data.Entity.Internal.DatabaseCreator.CreateDatabase(InternalContext internalContext, Func`3 createMigrator, ObjectContext objectContext)
bei System.Data.Entity.Internal.InternalContext.CreateDatabase(ObjectContext objectContext, DatabaseExistenceState existenceState)
bei System.Data.Entity.Database.Create(DatabaseExistenceState existenceState)
bei System.Data.Entity.CreateDatabaseIfNotExists`1.InitializeDatabase(TContext context)
bei System.Data.Entity.Internal.InternalContext.<>c__DisplayClass66_0`1.<CreateInitializationAction>b__0()
bei System.Data.Entity.Internal.InternalContext.PerformInitializationAction(Action action)
bei System.Data.Entity.Internal.InternalContext.PerformDatabaseInitialization()
bei System.Data.Entity.Internal.LazyInternalContext.<>c.<InitializeDatabase>b__58_0(InternalContext c)
bei System.Data.Entity.Internal.RetryAction`1.PerformAction(TInput input)
bei System.Data.Entity.Internal.LazyInternalContext.InitializeDatabaseAction(Action`1 action)
bei System.Data.Entity.Internal.LazyInternalContext.InitializeDatabase()
bei System.Data.Entity.Internal.InternalContext.Initialize()
bei System.Data.Entity.Internal.InternalContext.GetEntitySetAndBaseTypeForType(Type entityType)
bei System.Data.Entity.Internal.Linq.InternalSet`1.Initialize()
bei System.Data.Entity.Internal.Linq.InternalSet`1.get_InternalContext()
bei System.Data.Entity.Internal.Linq.InternalSet`1.ActOnSet(Action action, EntityState newState, Object entity, String methodName)
bei System.Data.Entity.Internal.Linq.InternalSet`1.Add(Object entity)
bei System.Data.Entity.DbSet`1.Add(TEntity entity)
bei ConsoleApp4.Program.Main(String[] args) in C:\Users\Wolfgang\source\repos\ConsoleApp4\ConsoleApp4\Program.cs: Zeile29
Maybe my VS Community Edition does not allow this?
Or maybe I have too many versions of sql server and localdb and so installed?
Greetings
Wolfgang
As #ErikEJ posted in a comment, I have to update my localdb install.
For this i used Cumulative Update 6 for SQL Server 2017.
After a restart of the pc it worked.
But code first migrations were not what i initially was searching for...
I think, I will have to post a new question...
im doing test using the AdventureWorks2014 microsoft database with visual studio(coding in C#).I am trying to input StateProvinceID and then display the names(Person.FirstName) that are associated with this StateProvinceID.So far I did this:
static public void provincequery()
{
Console.WriteLine("Enter province ID");
var theid = Convert.ToInt32(Console.ReadLine());
using (var context = new Model1())
{
var queryprovince = from test in context.StateProvince
where test.StateProvinceID == theid
select test;
foreach(var disp in queryprovince)
{
Console.WriteLine("\nProvince:");
Console.WriteLine(disp.Name);
foreach(var test2 in disp.SalesTerritory.Customer)
{
Console.WriteLine(test2.Person.FirstName);
}
}
}
}
however this keeps returning me an error "An error occurred while executing the command definition. See the inner exception for details."
inner exception:
à System.Data.Entity.Core.EntityClient.Internal.EntityCommandDefinition.ExecuteStoreCommands(EntityCommand entityCommand, CommandBehavior behavior)
à System.Data.Entity.Core.Objects.Internal.ObjectQueryExecutionPlan.Execute[TResultType](ObjectContext context, ObjectParameterCollection parameterValues)
à System.Data.Entity.Core.Objects.ObjectQuery`1.<>c__DisplayClass7.<GetResults>b__6()
à System.Data.Entity.Core.Objects.ObjectContext.ExecuteInTransaction[T](Func`1 func, IDbExecutionStrategy executionStrategy, Boolean startLocalTransaction, Boolean releaseConnectionOnSuccess)
à System.Data.Entity.Core.Objects.ObjectQuery`1.<>c__DisplayClass7.<GetResults>b__5()
à System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.Execute[TResult](Func`1 operation)
à System.Data.Entity.Core.Objects.ObjectQuery`1.GetResults(Nullable`1 forMergeOption)
à System.Data.Entity.Core.Objects.ObjectQuery`1.Execute(MergeOption mergeOption)
à System.Data.Entity.Core.Objects.DataClasses.EntityReference`1.Load(MergeOption mergeOption)
à System.Data.Entity.Core.Objects.DataClasses.RelatedEnd.DeferredLoad()
à System.Data.Entity.Core.Objects.Internal.LazyLoadBehavior.LoadProperty[TItem](TItem propertyValue, String relationshipName, String targetRoleName, Boolean mustBeNull, Object wrapperObject)
à System.Data.Entity.Core.Objects.Internal.LazyLoadBehavior.<>c__DisplayClass7`2.<GetInterceptorDelegate>b__2(TProxy proxy, TItem item)
à System.Data.Entity.DynamicProxies.StateProvince_0A13F786927514ECF26BEB6F7007442E73C1FCAA3A743679986FA051D479F5AA.get_SalesTerritory()
à ConsoleApplication1.Program.requete2() dans c:\Users\julianp\Desktop\ConsoleApplication1\ConsoleApplication1\Program.cs:ligne 152
à ConsoleApplication1.Program.Main(String[] args) dans c:\Users\julianp\Desktop\ConsoleApplication1\ConsoleApplication1\Program.cs:ligne 33
à System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
à System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
à Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
à System.Threading.ThreadHelper.ThreadStart_Context(Object state)
à System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
à System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
à System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
à System.Threading.ThreadHelper.ThreadStart()
I dont really understand why its not working.AdventureWorks schema can be found here:
https://moidulhassan.files.wordpress.com/2014/07/adventureworks2008_schema.gif
thank you
Solved; needed to add ToList() at the end of foreach(var disp in queryprovince).
So its foreach(var disp in queryprovince.ToList())
How is it possible to know which piece of code could cause the exception 'SPException was unhandled'?
CODE:
SPList mylist = web.Lists.TryGetList("mylist");
SPListItem item = mylist.Items.Add();
... ... ...
item.Update();
The trace is:
Stack details:
at Microsoft.SharePoint.SPGlobal.HandleComException(COMException comEx)
at Microsoft.SharePoint.Library.SPRequest.AddOrUpdateItem(String bstrUrl, String bstrListName, Boolean bAdd, Boolean bSystemUpdate, Boolean bPreserveItemVersion, Boolean bPreserveItemUIVersion, Boolean bUpdateNoVersion, Int32& plID, String& pbstrGuid, Guid pbstrNewDocId, Boolean bHasNewDocId, String bstrVersion, Object& pvarAttachmentNames, Object& pvarAttachmentContents, Object& pvarProperties, Boolean bCheckOut, Boolean bCheckin, Boolean bUnRestrictedUpdateInProgress, Boolean bMigration, Boolean bPublish, String bstrFileName, ISP2DSafeArrayWriter pListDataValidationCallback, ISP2DSafeArrayWriter pRestrictInsertCallback, ISP2DSafeArrayWriter pUniqueFieldCallback)
at Microsoft.SharePoint.SPListItem.AddOrUpdateItem(Boolean bAdd, Boolean bSystem, Boolean bPreserveItemVersion, Boolean bNoVersion, Boolean bMigration, Boolean bPublish, Boolean bCheckOut, Boolean bCheckin, Guid newGuidOnAdd, Int32& ulID, Object& objAttachmentNames, Object& objAttachmentContents, Boolean suppressAfterEvents, String filename, Boolean bPreserveItemUIVersion)
at Microsoft.SharePoint.SPListItem.UpdateInternal(Boolean bSystem, Boolean bPreserveItemVersion, Guid newGuidOnAdd, Boolean bMigration, Boolean bPublish, Boolean bNoVersion, Boolean bCheckOut, Boolean bCheckin, Boolean suppressAfterEvents, String filename, Boolean bPreserveItemUIVersion)
at Microsoft.SharePoint.SPListItem.Update()
at Dumper.Program.Main(String[] args) in c:\users\svcspfarm\documents\visual studio 2010\Projects\Dumper\Dumper\Program.cs:line 364
at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
Look the sharepoint ULS logs to find out more information about exception.
\Program Files\Common Files\Microsoft Shared\Web Server Extensions\14\LOGS
For me it looks like you have not setup values for the required list fields.
Have a look at these lines from stack trace:
at Microsoft.SharePoint.SPListItem.Update()
at Dumper.Program.Main(String[] args) in c:\users\svcspfarm\documents\visual studio 2010\Projects\Dumper\Dumper\Program.cs:line 364
The exception is occurring on the call to item.Update();. I had a similar problem when I was attempting to add a subfolder to a list and it can be less than obvious what is causing the problem. I would hazard a guess that somewhere between your call to mylist.Items.Add(); and the Update() that something has not been set correctly. A new list item may have some required fields that need to be initialised prior to the update?
I have a piece of code that checks to see if a user is in our database using a view called RESOURCE_V. If not, the code uses Entity Framework to add the user to the database using the user's information from Active Directory. I would then like to re-query the RESOURCE_V view to get the submitted information. Upon doing so I am getting "Object reference not set to an instance of an object.". Here is the full code:
HALEntities context = new HALEntities();
List<RESOURCE_V> userData = (from i in context.RESOURCE_V
where i.NT_USER_N == Environment.UserName
select i).ToList();
// add user to RSRC table using Active Directory details
if (userData.Count > 0)
{
PrincipalContext principleContext = new PrincipalContext(ContextType.Domain, HAL_Globals.domain);
UserPrincipal user = UserPrincipal.FindByIdentity(principleContext, IdentityType.SamAccountName, HAL_Globals.domain + "\\" + Environment.UserName);
RSRC rsrc = new RSRC();
rsrc.RSRC_I = context.RSRCs.Select(u => u.RSRC_I).Max() + 1;
rsrc.NT_USER_N = user.SamAccountName + "AAAA";
rsrc.FRST_N = user.GivenName;
rsrc.LAST_N = user.Surname;
rsrc.INIL_N = (user.MiddleName == null) ? "X" : user.MiddleName.Substring(0, 1);
rsrc.SHRT_N = user.GivenName.Substring(0, 1) + ((user.MiddleName == null) ? "X" : user.MiddleName.Substring(0, 1)) + user.Surname.Substring(0, 1);
rsrc.EMAIL_I = user.EmailAddress;
rsrc.TELE_I = user.VoiceTelephoneNumber.Replace("(", "").Replace(")", "").Replace("-", "");
rsrc.ACTV_F = true;
rsrc.CRTE_USER_I = Environment.UserName;
rsrc.CRTE_TS = DateTime.Now;
rsrc.UPDT_USER_I = Environment.UserName;
rsrc.UPDT_TS = DateTime.Now;
context.RSRCs.Add(rsrc);
context.SaveChanges();
userData = (from i in context.RESOURCE_V
where i.NT_USER_N == Environment.UserName + "AAAA"
select i).ToList();
}
Notice the logic doesn't exactly match my description as I am using this code to test against my ID that already exists. The line that errors out is the very last statement in the if block:
userData = (from i in context.RESOURCE_V
where i.NT_USER_N == Environment.UserName + "AAAA"
select i).ToList();
I have tried recreating the Entity context, using different LINQ syntax, but have had no luck. Any help would be appreciated.
Edit:
As requested, here is the stack trace:
at System.RuntimeTypeHandle.CreateInstance(RuntimeType type, Boolean publicOnly, Boolean noCheck, Boolean& canBeCached, RuntimeMethodHandleInternal& ctor, Boolean& bNeedSecurityCheck)
at System.RuntimeType.CreateInstanceSlow(Boolean publicOnly, Boolean skipCheckThis, Boolean fillCache, StackCrawlMark& stackMark)
at System.RuntimeType.CreateInstanceDefaultCtor(Boolean publicOnly, Boolean skipCheckThis, Boolean fillCache, StackCrawlMark& stackMark)
at System.Activator.CreateInstance(Type type, Boolean nonPublic)
at System.RuntimeType.CreateInstanceImpl(BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes, StackCrawlMark& stackMark)
at System.Activator.CreateInstance(Type type, BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes)
at System.Activator.CreateInstance(Type type, Object[] args)
at System.Xaml.Schema.SafeReflectionInvoker.CreateInstanceCritical(Type type, Object[] arguments)
at System.Xaml.Schema.SafeReflectionInvoker.CreateInstance(Type type, Object[] arguments)
at System.Xaml.Schema.XamlTypeInvoker.CreateInstance(Object[] arguments)
at MS.Internal.Xaml.Runtime.ClrObjectRuntime.CreateInstanceWithCtor(XamlType xamlType, Object[] args)
at MS.Internal.Xaml.Runtime.ClrObjectRuntime.CreateInstance(XamlType xamlType, Object[] args)
at MS.Internal.Xaml.Runtime.PartialTrustTolerantRuntime.CreateInstance(XamlType xamlType, Object[] args)
at System.Xaml.XamlObjectWriter.Logic_CreateAndAssignToParentStart(ObjectWriterContext ctx)
at System.Xaml.XamlObjectWriter.WriteStartMember(XamlMember property)
at System.Xaml.XamlWriter.WriteNode(XamlReader reader)
at System.Windows.Markup.WpfXamlLoader.TransformNodes(XamlReader xamlReader, XamlObjectWriter xamlWriter, Boolean onlyLoadOneNode, Boolean skipJournaledProperties, Boolean shouldPassLineNumberInfo, IXamlLineInfo xamlLineInfo, IXamlLineInfoConsumer xamlLineInfoConsumer, XamlContextStack`1 stack, IStyleConnector styleConnector)
at System.Windows.Markup.WpfXamlLoader.Load(XamlReader xamlReader, IXamlObjectWriterFactory writerFactory, Boolean skipJournaledProperties, Object rootObject, XamlObjectWriterSettings settings, Uri baseUri)
at System.Windows.Markup.WpfXamlLoader.LoadBaml(XamlReader xamlReader, Boolean skipJournaledProperties, Object rootObject, XamlAccessLevel accessLevel, Uri baseUri)
at System.Windows.Markup.XamlReader.LoadBaml(Stream stream, ParserContext parserContext, Object parent, Boolean closeStream)
at System.Windows.Application.LoadBamlStreamWithSyncInfo(Stream stream, ParserContext pc)
at System.Windows.Application.LoadComponent(Uri resourceLocator, Boolean bSkipJournaledProperties)
at System.Windows.Application.DoStartup()
at System.Windows.Application.<.ctor>b__1(Object unused)
at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)
at System.Windows.Threading.DispatcherOperation.InvokeImpl()
at System.Windows.Threading.DispatcherOperation.InvokeInSecurityContext(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Windows.Threading.DispatcherOperation.Invoke()
at System.Windows.Threading.Dispatcher.ProcessQueue()
at System.Windows.Threading.Dispatcher.WndProcHook(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)
at System.Windows.Threading.Dispatcher.LegacyInvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs)
at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam)
at MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg)
at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame)
at System.Windows.Threading.Dispatcher.PushFrame(DispatcherFrame frame)
at System.Windows.Threading.Dispatcher.Run()
at System.Windows.Application.RunDispatcher(Object ignore)
at System.Windows.Application.RunInternal(Window window)
at System.Windows.Application.Run(Window window)
at System.Windows.Application.Run()
at HAL.App.Main() in c:\HAL\HAL_PROD\HAL\obj\Debug\App.g.cs:line 0
at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
at System.AppDomain.nExecuteAssembly(RuntimeAssembly assembly, String[] args)
at System.Runtime.Hosting.ManifestRunner.Run(Boolean checkAptModel)
at System.Runtime.Hosting.ManifestRunner.ExecuteAsAssembly()
at System.Runtime.Hosting.ApplicationActivator.CreateInstance(ActivationContext activationContext, String[] activationCustomData)
at System.Runtime.Hosting.ApplicationActivator.CreateInstance(ActivationContext activationContext)
at System.Activator.CreateInstance(ActivationContext activationContext)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssemblyDebugInZone()
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
Edit 2: The Inner Exception Stack Trace:
at System.Data.EntityKey.AddHashValue(Int32 hashCode, Object keyValue)
at System.Data.EntityKey.GetHashCode()
at System.Collections.Generic.GenericEqualityComparer`1.GetHashCode(T obj)
at System.Collections.Generic.Dictionary`2.FindEntry(TKey key)
at System.Collections.Generic.Dictionary`2.TryGetValue(TKey key, TValue& value)
at System.Data.Objects.ObjectStateManager.TryGetEntityEntry(EntityKey key, EntityEntry& entry)
at System.Data.Common.Internal.Materialization.Shaper.HandleEntityAppendOnly[TEntity](Func`2 constructEntityDelegate, EntityKey entityKey, EntitySet entitySet)
at lambda_method(Closure , Shaper )
at System.Data.Common.Internal.Materialization.Coordinator`1.ReadNextElement(Shaper shaper)
at System.Data.Common.Internal.Materialization.Shaper`1.SimpleEnumerator.MoveNext()
at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)
at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source)
at HAL.HAL_CurrentUser..ctor(SqlConnection currentServerConnection) in c:\HAL\HAL_PROD\HAL\Global Classes\HAL_CurrentUser.cs:line 86
at HAL.HAL_CurrentUser.get_Instance() in c:\HAL\HAL_PROD\HAL\Global Classes\HAL_CurrentUser.cs:line 46
at HAL.WelcomeViewModel..ctor() in c:\HAL\HAL_PROD\HAL\HAL Classes\Welcome\WelcomeViewModel.cs:line 21
at HAL.Welcome..ctor() in c:\HAL\HAL_PROD\HAL\HAL Classes\Welcome\Welcome.xaml.cs:line 26
at HAL.Navigation..ctor() in c:\HAL\HAL_PROD\HAL\Navigation.xaml.cs:line 17
Edit 3:
After playing around with the values being queried in the second LINQ query I have determined the issue is being caused by the fact that I am filtering on the new ID in the where clause of the LINQ query. If I hard-code another ID in the query it works and the error is not thrown. I have determined the new ID is in fact being added to the database.
The entity has a composite key and when you save the new entity one of the key column is null. EF does not support nullable keys (it throws) but apparently there is a bug in EF where this condition is not checked in this specific scenario and hence the NRE. You need to make sure that you are not returning null values in primary key columns.
I had the same problem. My class field of collection type was empty. I struggled a lot to fix the problem.
Finally the error was in typo - I was creating the object with new while making local declaration for the class field name and then it was going out of local scope.
I know that it doesn't answer the topic, but as a point to re-check the code for such errors.
Sorry, I really wanted to help other guys like me with the similar problem.
I have deployed an MVC4 application to AppHarbor using Git and I added the SQL Server add-on to my AppHarbor application project. The project builds just fine and when I navigate to the url of my application and click the Login button I get
Unable to find the requested .Net Framework Data Provider. It may not be installed.
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.ArgumentException: Unable to find the requested .Net Framework Data Provider. It may not be installed.
Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Stack Trace:
[ArgumentException: Unable to find the requested .Net Framework Data Provider. It may not be installed.]
System.Data.Common.DbProviderFactories.GetFactory(String providerInvariantName) +77
WebMatrix.Data.DbProviderFactoryWrapper.CreateConnection(String connectionString) +48
WebMatrix.Data.<>c__DisplayClass15.<OpenConnectionStringInternal>b__14() +16
WebMatrix.Data.Database.get_Connection() +19
WebMatrix.Data.Database.EnsureConnectionOpen() +13
WebMatrix.Data.<QueryInternal>d__0.MoveNext() +66
System.Linq.Enumerable.FirstOrDefault(IEnumerable`1 source) +183
WebMatrix.Data.Database.QuerySingle(String commandText, Object[] args) +44
WebMatrix.WebData.DatabaseWrapper.QuerySingle(String commandText, Object[] parameters) +14
WebMatrix.WebData.SimpleMembershipProvider.CheckTableExists(IDatabase db, String tableName) +54
WebMatrix.WebData.SimpleMembershipProvider.CreateTablesIfNeeded() +57
WebMatrix.WebData.WebSecurity.InitializeMembershipProvider(SimpleMembershipProvider simpleMembership, DatabaseConnectionInfo connect, String userTableName, String userIdColumn, String userNameColumn, Boolean createTables) +81
WebMatrix.WebData.WebSecurity.InitializeProviders(DatabaseConnectionInfo connect, String userTableName, String userIdColumn, String userNameColumn, Boolean autoCreateTables) +52
WebMatrix.WebData.WebSecurity.InitializeDatabaseConnection(String connectionStringName, String userTableName, String userIdColumn, String userNameColumn, Boolean autoCreateTables) +60
ExploreGame01.Filters.SimpleMembershipInitializer..ctor() in d:\temp\uoppttzv.jeq\input\ExploreGame01\Filters\InitializeSimpleMembershipAttribute.cs:41
[InvalidOperationException: The ASP.NET Simple Membership database could not be initialized. For more information, please see http://go.microsoft.com/fwlink/?LinkId=256588]
ExploreGame01.Filters.SimpleMembershipInitializer..ctor() in d:\temp\uoppttzv.jeq\input\ExploreGame01\Filters\InitializeSimpleMembershipAttribute.cs:45
[TargetInvocationException: Exception has been thrown by the target of an invocation.]
System.RuntimeTypeHandle.CreateInstance(RuntimeType type, Boolean publicOnly, Boolean noCheck, Boolean& canBeCached, RuntimeMethodHandleInternal& ctor, Boolean& bNeedSecurityCheck) +0
System.RuntimeType.CreateInstanceSlow(Boolean publicOnly, Boolean skipCheckThis, Boolean fillCache, StackCrawlMark& stackMark) +159
System.RuntimeType.CreateInstanceDefaultCtor(Boolean publicOnly, Boolean skipCheckThis, Boolean fillCache, StackCrawlMark& stackMark) +251
System.Activator.CreateInstance(Type type, Boolean nonPublic) +87
System.Activator.CreateInstance(Type type) +6
System.Threading.LazyHelpers`1.ActivatorFactorySelector() +68
System.Threading.LazyInitializer.EnsureInitializedCore(T& target, Boolean& initialized, Object& syncLock, Func`1 valueFactory) +114
System.Threading.LazyInitializer.EnsureInitialized(T& target, Boolean& initialized, Object& syncLock) +113
ExploreGame01.Filters.InitializeSimpleMembershipAttribute.OnActionExecuting(ActionExecutingContext filterContext) in d:\temp\uoppttzv.jeq\input\ExploreGame01\Filters\InitializeSimpleMembershipAttribute.cs:21
System.Web.Mvc.Async.AsyncControllerActionInvoker.InvokeActionMethodFilterAsynchronously(IActionFilter filter, ActionExecutingContext preContext, Func`1 nextInChain) +77
System.Web.Mvc.Async.<>c__DisplayClass3b.<BeginInvokeActionMethodWithFilters>b__35() +22
System.Web.Mvc.Async.AsyncControllerActionInvoker.InvokeActionMethodFilterAsynchronously(IActionFilter filter, ActionExecutingContext preContext, Func`1 nextInChain) +543
System.Web.Mvc.Async.<>c__DisplayClass3b.<BeginInvokeActionMethodWithFilters>b__35() +22
System.Web.Mvc.Async.<>c__DisplayClass37.<BeginInvokeActionMethodWithFilters>b__31(AsyncCallback asyncCallback, Object asyncState) +201
System.Web.Mvc.Async.WrappedAsyncResult`1.Begin(AsyncCallback callback, Object state, Int32 timeout) +120
System.Web.Mvc.Async.AsyncResultWrapper.Begin(AsyncCallback callback, Object state, BeginInvokeDelegate beginDelegate, EndInvokeDelegate`1 endDelegate, Object tag, Int32 timeout) +79
System.Web.Mvc.Async.AsyncResultWrapper.Begin(AsyncCallback callback, Object state, BeginInvokeDelegate beginDelegate, EndInvokeDelegate`1 endDelegate, Object tag) +64
System.Web.Mvc.Async.AsyncControllerActionInvoker.BeginInvokeActionMethodWithFilters(ControllerContext controllerContext, IList`1 filters, ActionDescriptor actionDescriptor, IDictionary`2 parameters, AsyncCallback callback, Object state) +162
System.Web.Mvc.Async.<>c__DisplayClass25.<BeginInvokeAction>b__1e(AsyncCallback asyncCallback, Object asyncState) +512
System.Web.Mvc.Async.WrappedAsyncResult`1.Begin(AsyncCallback callback, Object state, Int32 timeout) +120
System.Web.Mvc.Async.AsyncResultWrapper.Begin(AsyncCallback callback, Object state, BeginInvokeDelegate beginDelegate, EndInvokeDelegate`1 endDelegate, Object tag, Int32 timeout) +52
System.Web.Mvc.Async.AsyncResultWrapper.Begin(AsyncCallback callback, Object state, BeginInvokeDelegate beginDelegate, EndInvokeDelegate`1 endDelegate, Object tag) +19
System.Web.Mvc.Async.AsyncControllerActionInvoker.BeginInvokeAction(ControllerContext controllerContext, String actionName, AsyncCallback callback, Object state) +252
System.Web.Mvc.<>c__DisplayClass1d.<BeginExecuteCore>b__17(AsyncCallback asyncCallback, Object asyncState) +37
System.Web.Mvc.Async.WrappedAsyncResult`1.Begin(AsyncCallback callback, Object state, Int32 timeout) +120
System.Web.Mvc.Async.AsyncResultWrapper.Begin(AsyncCallback callback, Object state, BeginInvokeDelegate beginDelegate, EndInvokeDelegate`1 endDelegate, Object tag, Int32 timeout) +52
System.Web.Mvc.Async.AsyncResultWrapper.Begin(AsyncCallback callback, Object state, BeginInvokeDelegate beginDelegate, EndInvokeDelegate endDelegate, Object tag, Int32 timeout) +37
System.Web.Mvc.Async.AsyncResultWrapper.Begin(AsyncCallback callback, Object state, BeginInvokeDelegate beginDelegate, EndInvokeDelegate endDelegate, Object tag) +19
System.Web.Mvc.Controller.BeginExecuteCore(AsyncCallback callback, Object state) +284
System.Web.Mvc.Async.WrappedAsyncResult`1.Begin(AsyncCallback callback, Object state, Int32 timeout) +120
System.Web.Mvc.Async.AsyncResultWrapper.Begin(AsyncCallback callback, Object state, BeginInvokeDelegate beginDelegate, EndInvokeDelegate`1 endDelegate, Object tag, Int32 timeout) +52
System.Web.Mvc.Async.AsyncResultWrapper.Begin(AsyncCallback callback, Object state, BeginInvokeDelegate beginDelegate, EndInvokeDelegate endDelegate, Object tag, Int32 timeout) +37
System.Web.Mvc.Async.AsyncResultWrapper.Begin(AsyncCallback callback, Object state, BeginInvokeDelegate beginDelegate, EndInvokeDelegate endDelegate, Object tag) +19
System.Web.Mvc.Controller.BeginExecute(RequestContext requestContext, AsyncCallback callback, Object state) +242
System.Web.Mvc.Controller.System.Web.Mvc.Async.IAsyncController.BeginExecute(RequestContext requestContext, AsyncCallback callback, Object state) +15
System.Web.Mvc.<>c__DisplayClass8.<BeginProcessRequest>b__2(AsyncCallback asyncCallback, Object asyncState) +76
System.Web.Mvc.Async.WrappedAsyncResult`1.Begin(AsyncCallback callback, Object state, Int32 timeout) +120
System.Web.Mvc.Async.AsyncResultWrapper.Begin(AsyncCallback callback, Object state, BeginInvokeDelegate beginDelegate, EndInvokeDelegate`1 endDelegate, Object tag, Int32 timeout) +52
System.Web.Mvc.Async.AsyncResultWrapper.Begin(AsyncCallback callback, Object state, BeginInvokeDelegate beginDelegate, EndInvokeDelegate endDelegate, Object tag, Int32 timeout) +37
System.Web.Mvc.Async.AsyncResultWrapper.Begin(AsyncCallback callback, Object state, BeginInvokeDelegate beginDelegate, EndInvokeDelegate endDelegate, Object tag) +19
System.Web.Mvc.MvcHandler.BeginProcessRequest(HttpContextBase httpContext, AsyncCallback callback, Object state) +176
System.Web.Mvc.MvcHandler.BeginProcessRequest(HttpContext httpContext, AsyncCallback callback, Object state) +48
System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.BeginProcessRequest(HttpContext context, AsyncCallback cb, Object extraData) +16
System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +875
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +234
From what I can tell from other posts is that I am having a problem with my connection string to the database. However, I've copied the supplied connection string from AppHarbor and put it into my web.config.
Until now I've only ever run my app on localhost and everything has always run just fine.
Can anyone please provide some advice?
Turns out, I did not include the new SQL server connection string for both of my applications connection strings. While most of my application uses a custom made connection string, DefaultConnection was being used for the login and Register pages.
Once I added the connection string provided for me to the DefaultConnection everything worked fine.