I am trying to migrate a Team Project from TFS 2015 to Visual Studio Team Services. I connected to both the Source and Destination, selected the Team Project, mapped my users, and then when validating the Migration Summary a NullReferenceException is thrown.
The following was found in the OVSMU.log file:
2016-07-29 10:33:20,674 [1] ERROR Object reference not set to an instance of an object.
System.NullReferenceException: Object reference not set to an instance of an object.
at TFSMigrationUI.ViewModel.MigrationSummeryViewModel.worker_RunWorkerCompleted(Object sender, RunWorkerCompletedEventArgs e) in c:\Project_CheckOut\TFSMigration\TFSMigrationUI\ViewModel\MigrationSummeryViewModel.cs:line 1096
at System.ComponentModel.BackgroundWorker.OnRunWorkerCompleted(RunWorkerCompletedEventArgs e)
at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)
Has anyone seen a similar problem?
Related
I have a silverlight project that works perfectly when I run it independently (i.e. run instance), but when I run it from my MVC website it rises an exception that says
Unhandled Error in Silverlight 2 Application
Object reference not set to an instance of an object.
at TakingMyPicture.MainPage..ctor()
at TakingMyPicture.App.Application_Startup(Object sender, StartupEventArgs e)
at MS.Internal.CoreInvokeHandler.InvokeEventHandler(UInt32 typeIndex, Delegate handlerDelegate, Object sender, Object args)
at MS.Internal.JoltHelper.FireEvent(IntPtr unmanagedObj, IntPtr unmanagedObjArgs, Int32 argsTypeIndex, Int32 actualArgsTypeIndex, String eventName, UInt32 flags)
I created a basic .NET 4.0 application and referenced the Saxon assemblies. Here is the list of dll's I referenced in the project.
saxon9.dll
saxon9api.dll
IKVM.OpenJDK.ClassLibrary.dll
IKVM.Runtime.dll
The code for the application is as follows:
Sub Main()
Console.WriteLine("Trying to instantiate SaxonProcessor...")
Try
Dim SaxonProcessor As Saxon.Api.Processor = New Saxon.Api.Processor()
Catch ex As Exception
Console.WriteLine("Error: " & ex.Message & ex.StackTrace)
Console.Read()
End Try
Console.WriteLine("Saxon instantiated successfully!")
Console.Read()
End Sub
When I run this application on our IIS machine, I get the following output:
Trying to instantiate SaxonProcessor...
Saxon instantiated successfully!
I then created a basic web application project and referenced the same files as the windows application. I deployed the web application to a virtual directory that contains all the referenced assemblies. I put the following code inside my Default.aspx page:
Public Class _Default
Inherits System.Web.UI.Page
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Response.Write("Trying to instantiate SaxonProcessor...")
Try
Dim SaxonProcessor As Saxon.Api.Processor = New Saxon.Api.Processor()
Response.Write("Saxon instantiated successfully!")
Catch ex As Exception
Response.Write("Error: " & ex.Message & ex.StackTrace)
End Try
End Sub
End Class
When I load the page, it gives me this exception:
Trying to instantiate SaxonProcessor...Error: The type initializer for 'IKVM.NativeCode.java.lang.Thread' threw an exception. at IKVM.NativeCode.java.lang.Class.forName0(String name, Boolean initialize, Object loader) at java.lang.Class.forName0(String , Boolean , ClassLoader ) at java.lang.Class.forName(String className) at net.sf.saxon.dotnet.DotNetExtensionFunctionFactory.class$(String x0) at net.sf.saxon.dotnet.DotNetExtensionFunctionFactory..ctor(Configuration config) at net.sf.saxon.dotnet.DotNetPlatform.initialize(Configuration config) at net.sf.saxon.Configuration.init() at net.sf.saxon.Configuration..ctor() at Saxon.Api.Processor..ctor() at BealSaxxon._Default.Page_Load(Object sender, EventArgs e) in C:\Users\u0147101\Desktop\BealSaxxon\BealSaxxon\Default.aspx.vb:line 9
FULL STACKTRACE FROM IIS MACHINE:
System.TypeInitializationException: The type initializer for 'IKVM.NativeCode.java.lang.Thread' threw an exception. ---> System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.TypeInitializationException: The type initializer for 'java.io.BufferedInputStream' threw an exception. ---> java.lang.RuntimeException: java.lang.IllegalAccessException: Class java.util.concurrent.atomic.AtomicReferenceFieldUpdater can not access a member of class java.io.BufferedInputStream with modifiers "volatile" ---> java.lang.IllegalAccessException: Class java.util.concurrent.atomic.AtomicReferenceFieldUpdater can not access a member of class java.io.BufferedInputStream with modifiers "volatile"
at sun.reflect.misc.ReflectUtil.ensureMemberAccess(Class currentClass, Class memberClass, Object target, Int32 modifiers)
at java.util.concurrent.atomic.AtomicReferenceFieldUpdater.AtomicReferenceFieldUpdaterImpl..ctor(Class , Class , String )
--- End of inner exception stack trace ---
at java.util.concurrent.atomic.AtomicReferenceFieldUpdater.AtomicReferenceFieldUpdaterImpl..ctor(Class , Class , String )
at java.util.concurrent.atomic.AtomicReferenceFieldUpdater.newUpdater(Class tclass, Class vclass, String fieldName)
at java.io.BufferedInputStream..cctor()
--- End of inner exception stack trace ---
at java.io.BufferedInputStream.__<clinit>()
at java.lang.System.initializeSystemClass()
--- End of inner exception stack trace ---
at System.RuntimeMethodHandle._InvokeMethodFast(IRuntimeMethodInfo method, Object target, Object[] arguments, SignatureStruct& sig, MethodAttributes methodAttributes, RuntimeType typeOwner)
at System.RuntimeMethodHandle.InvokeMethodFast(IRuntimeMethodInfo method, Object target, Object[] arguments, Signature sig, MethodAttributes methodAttributes, RuntimeType typeOwner)
at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture, Boolean skipVisibilityChecks)
at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
at System.Reflection.MethodBase.Invoke(Object obj, Object[] parameters)
at IKVM.NativeCode.java.lang.Thread..cctor()
--- End of inner exception stack trace ---
at IKVM.NativeCode.java.lang.Class.forName0(String name, Boolean initialize, Object loader)
at java.lang.Class.forName(String className)
at net.sf.saxon.dotnet.DotNetExtensionFunctionFactory.class$(String x0)
at net.sf.saxon.dotnet.DotNetExtensionFunctionFactory..ctor(Configuration config)
at net.sf.saxon.dotnet.DotNetPlatform.initialize(Configuration config)
at net.sf.saxon.Configuration.init()
at net.sf.saxon.Configuration..ctor()
at Saxon.Api.Processor..ctor()
at EDG.Transforms..ctor()
at EDG.Main..ctor(NameValueCollection applicationSettings, List`1 exceptionList)
at EDG.EGallery..ctor(NameValueCollection ConfigurationSettings, List`1 ExceptionList)
Has anyone seen this exception before? I've searched extensively on Google but nobody seems to have had this specific exception. I'm thinking it's a permissions problem with IIS, but I don't know for sure. The application pool this application is running under is setup with a machine administrator.
I think this can be 2 types of causes.
One of the IKVM dll is missing. Add all dll of IKVM to test if this solve the problem.
IKVM is compiled for .NET 2 and not version 4. You need to add a version mapping to your app.config.
In this situation, it was a product called OpNET that was interfering with apps using the JVM. Once its services and processes were stopped, the Saxon assembly worked fine.
In my project I have 2 configurations for spring, one in code and one in xml. The code context will load the mock objects defined in the MockConfigurations class. The xml config is defined in the app.config. I’m setting the xml config as parent of the code config.
public static IApplicationContext GetMergedContainer()
{
var scanner = new AssemblyObjectDefinitionScanner();
scanner.IncludeType<MockConfigurations>();
var context = new CodeConfigApplicationContext(ContextRegistry.GetContext());
context.Scan(scanner);
context.Refresh();
return context;
}
In the spring documentation (http://www.springframework.net/doc-latest/reference/html/web.html) it says:
If a referenced object definition is not found in the current context, Spring.NET searches all ancestor contexts in the context hierarchy until it finds the object definition (or ultimately fails and throws an exception).
That is not working for me:
var element = GetMergedContainer().GetObject<IElement>();
throws Spring.Objects.Factory.NoSuchObjectDefinitionException : No object named '[Namespace].IElement' is defined : Requested Type not Defined in the Context.
Whether the getting the object from the parent works fine:
var element = GetMergedContainer().ParentContext.GetObject<IElement>();
Am I missing something? Has anyone succeeded in setting an XML context as parent of a code context?
Any help will be appreciated.
Thanks in advance.
I’m using Spring.Core.1.3.2 and Spring.CodeConfig.1.0.4
[UPDATE]
I was recreating the situation with a more simple code (http://www.springframework.net/codeconfig/refdoc/migration-example.html)
I put again an XML config as parent of the code config and I tried to resolve an object from the code context that exists only in the XML (parent) context.
This works:
ConsoleReport report = ctx["ConsoleReport"] as ConsoleReport;
ConsoleReport report = ctx.GetObject("ConsoleReport") as ConsoleReport;
This fails:
ConsoleReport report = ctx.GetObject<ConsoleReport>();
The error is the following:
Spring.Objects.Factory.NoSuchObjectDefinitionException was unhandled
Message=No object named 'Spring.Evaluation.ConsoleReport' is defined : Requested Type not >Defined in the Context.
Source=Spring.Core.Configuration
ObjectName=Spring.Evaluation.ConsoleReport
StackTrace:
at Spring.Context.ApplicationContextExtensions.GetObject[T](IApplicationContext
context) in c:_prj\spring-net-codeconfig\src\Spring.Core.Configuration\Context\Extension\ApplicationContextExtensions.cs:line 69
at Spring.Evaluation.Program.Main(String[] args) in c:\users\oscar\documents\visual studio 2010\Projects\Spring.Evaluation\Spring.Evaluation\Program.cs:line 16
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.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext,
ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
I’m trying to add the code configuration to a project (a little big) that uses the later approach, and I would very much like to maintain all those lines of codes as they are.
Isn't that a crazy error?
I get this when trying to open a form containing some UserControls from another assebly and using Entity Framework and SQL CE on visual studio designer.
Object of type Namespace.T[] cannot be converted to type Namespace.T[]!!!
Call Stack:
at System.RuntimeType.TryChangeType(Object value, Binder binder, CultureInfo culture, Boolean needsSpecialCast) at System.RuntimeType.CheckValue(Object value, Binder binder, CultureInfo culture, BindingFlags invokeAttr) at System.Reflection.RtFieldInfo.InternalSetValue(Object obj, Object value, BindingFlags invokeAttr, Binder binder, CultureInfo culture, Boolean doVisibilityCheck, Boolean doCheckConsistency) at System.Runtime.Serialization.FormatterServices.SerializationSetValue(MemberInfo fi, Object target, Object value) at System.Runtime.Serialization.ObjectManager.CompleteObject(ObjectHolder holder, Boolean bObjectFullyComplete) at System.Runtime.Serialization.ObjectManager.DoNewlyRegisteredObjectFixups(ObjectHolder holder) at System.Runtime.Serialization.ObjectManager.RegisterObject(Object obj, Int64 objectID, SerializationInfo info, Int64 idOfContainingObj, MemberInfo member, Int32[] arrayIndex) at System.Runtime.Serialization.Formatters.Binary.ObjectReader.RegisterObject(Object obj, ParseRecord pr, ParseRecord objectPr, Boolean bIsString) at System.Runtime.Serialization.Formatters.Binary.ObjectReader.ParseObjectEnd(ParseRecord pr) at System.Runtime.Serialization.Formatters.Binary.ObjectReader.Parse(ParseRecord pr) at System.Runtime.Serialization.Formatters.Binary.__BinaryParser.Run() at System.Runtime.Serialization.Formatters.Binary.ObjectReader.Deserialize(HeaderHandler handler, __BinaryParser serParser, Boolean fCheck, Boolean isCrossAppDomain, IMethodCallMessage methodCallMessage) at System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Deserialize(Stream serializationStream, HeaderHandler handler, Boolean fCheck, Boolean isCrossAppDomain, IMethodCallMessage methodCallMessage) at System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Deserialize(Stream serializationStream) at System.Resources.ResXDataNode.GenerateObjectFromDataNodeInfo(DataNodeInfo dataNodeInfo, ITypeResolutionService typeResolver) at System.Resources.ResXDataNode.GetValue(ITypeResolutionService typeResolver) at System.Resources.ResXResourceReader.ParseDataNode(XmlTextReader reader, Boolean isMetaData) at System.Resources.ResXResourceReader.ParseXml(XmlTextReader reader)
But its the same name type exactly!
The project builds successfully and runs ok!!!
OK i deleted the .resx file of the form and now i get 2 other errors i thought i have passed.
1st is "The specified named connection, not intended to be used with the EntityClient provider, or not valid"
Call Stack:
at System.Data.EntityClient.EntityConnection.ChangeConnectionString(String newConnectionString) at System.Data.EntityClient.EntityConnection..ctor(String connectionString) at System.Data.Objects.ObjectContext.CreateEntityConnection(String connectionString) at System.Data.Objects.ObjectContext..ctor(String connectionString, String defaultContainerName) at DJPro.Settings.Model.SettingsEntities..ctor() in D:\Visual Studio Projects\DJProAutomation\DJPro.Settings.Model\SettingsSelfTrackModel.Context.cs:line 33 at DJPro.Data.Access.SettingsDataOperations.GetConfiguration() in D:\Visual Studio Projects\DJProAutomation\DJPro.Data.Access\SettingsDataOperations.cs:line 33 at DJPro.Studio.Controls.DeckControl..ctor() in D:\Visual Studio Projects\DJProAutomation\DJPro.Deck.Controls\DeckControl.cs:line 51
2nd is about a control i have on a library saying.
"The variable deckControl1 is either undeclared or was never assigned"
Call Stack:
at System.ComponentModel.Design.Serialization.CodeDomSerializerBase.Error(IDesignerSerializationManager manager, String exceptionText, String helpLink) at System.ComponentModel.Design.Serialization.CodeDomSerializerBase.DeserializeExpression(IDesignerSerializationManager manager, String name, CodeExpression expression) at System.ComponentModel.Design.Serialization.CodeDomSerializerBase.DeserializeExpression(IDesignerSerializationManager manager, String name, CodeExpression expression) at System.ComponentModel.Design.Serialization.CodeDomSerializerBase.DeserializeStatement(IDesignerSerializationManager manager, CodeStatement statement)
Then restored from a backup the resx file and im going back to the first problem.
So strange errors, everything seems fine in the Entity Data Model libraries and the app.config has all the necessary connection strings. As for the deckControl1 UserControl it seems fine to the library i have created it and opens ok.
I think this gets me crazy enough and stops the development.
Any idea?
It looks like you have a version conflict between the assembly used to generate the ResX and the currently referenced assembly.
Try removing the reference, re-adding it as a project reference, and regenerating the ResX.
Found the problem, if you use in UserControl constructor code that initializes entity framework context provides problems....even problem can occur while trying to initialize context for data operations in the Load event handler.
Tricky!
I'm very new to WPF and the EF, and I'm trying to display some data from a table in a datagrid. I've got the entity model pulled from an existing database and simple operations seem to work (getting row counts, using 'first').
I'm running against Firebird 2.5.0 using the 2.0.5 DDEX provider and 2.5.2 ADO NETProvider.
When I try to get the data into the grid or simply into a list, I get a null reference exception.
Possibly I just don't understand how to use the entity framework, but the examples I see on the net make it look really easy.
public partial class Page1 : Page
{
Entities context;
public Page1()
{
context = new Entities();
InitializeComponent();
// This works to get a row into the grid
var arep = context.SALESREPs.First();
var alist = new List<SALESREP>();
alist.Add( arep );
gridUserList.ItemsSource = alist;
// These both fail with null ref exception
var allreps = context.SALESREPs.ToList();
gridUserList.ItemsSource = context.SALESREPs;
}
}
Here's the exception detail:
System.NullReferenceException was unhandled by user code
Message=Object reference not set to an instance of an object.
Source=System.Data.Entity
StackTrace:
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 PSUserMaintenanceWebUI.Page1..ctor() in C:\Documents and Settings\d...\my documents\visual studio 2010\Projects\UserMaintenance\UserMaintenanceWebUI\Page1.xaml.cs:line 36
at System.Xaml.Schema.XamlTypeInvoker.DefaultCtorXamlActivator.InvokeDelegate(Action`1 action, Object argument)
at System.Xaml.Schema.XamlTypeInvoker.DefaultCtorXamlActivator.CallCtorDelegate(XamlTypeInvoker type)
at System.Xaml.Schema.XamlTypeInvoker.DefaultCtorXamlActivator.CreateInstance(XamlTypeInvoker type)
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)
InnerException:
My table has a multi-field primary key with some of the fields being nullable. The entity framework doesn't like nullable fields in the primary key. I removed those rows and it works fine. I'm already in the process of finding a different solution to the requirement that prompted us to allow nulls in some of the primary key fields.