Designer error visual studio

Is there a good way to debug errors in the Visual Studio Designer?

In our project we have tons of UserControls and many complex forms. For the complex ones, the Designer often throws various exceptions which doesn’t help much, and I was wondering if there’s some nice way to figure out what has gone wrong.

The language is C#, and we’re using Visual Studio 2005.

asked Sep 2, 2008 at 14:22

I’ve been able to debug some control designer issues by running a second instance of VS, then from your first VS instance do a «Debug -> Attach to Process» and pick «devenv».

The first VS instance is where you’ll set your breakpoints. Use the second instance to load up the designer to cause the «designer» code to run.

answered Sep 2, 2008 at 15:22

answered Dec 4, 2008 at 7:25

It has been a pain in 2005 and still is in 2015. Breakpoints will often not hit, probably because of the assemblies being shadow copied or something by the designer(?). The best you can do is to break manually by introducing a call to Debugger.Break(). You may wrap it into a compiler conditional as so:

#if DEBUG
   System.Diagnostics.Debugger.Break(); 
#endif
int line_to = break; // <- if a simple breakpoint here does not suffice

answered Jul 13, 2016 at 10:18

Haymo KutschbachHaymo Kutschbach

3,3221 gold badge16 silver badges24 bronze badges

I have had this happen many times and it is a real pain.

Firstly I’d suggest attempting to follow the stack trace provided by the designer, though I found that often simply lists a bunch of internals stuff that isn’t much use.

If that doesn’t work then try compiling and determining the exception from there. You really are flying blind which is the problem. You could then try simply running the code and seeing what exception is raised when you run it, that should give you some more information.

A last-gasp approach could be to remove all the non-generated code from the form and gradually re-introduce it to determine the error.

If you’re using custom controls you could manually remove the generated code related to the custom controls as well if the previous method still results in an error. You could then re-introduce this step-by-step in the same way to determine which custom control is causing the problem, then go and debug that separately.

Basically as far as I can tell there’s no real way around the problem other than to slog it out a bit!

answered Sep 2, 2008 at 14:36

ljsljs

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I discovered why sometimes breakpoints are not hit. In the Attach to Process dialog, «Attach to:» type has to be «Select…»‘d.

Once I changed to «Managed 4.0, 4.5», breakpoints for a WinRT application were hit. Source: Designer Debugging in WinRT.

answered Apr 28, 2014 at 23:49

Each one is different and they can sometimes be obscure. As a first step, I would do the following:

Use source control and save often. When a designer error occurs, get a list of all changes to the affected controls that have occurred recently and test each one until you find the culprit
Be sure to check out the initialization routines of the controls involved. Very often these errors will occur because of some error or bad dependency that is called through the default constructor for a control (an error that may only manifest itself in VS)

answered Sep 2, 2008 at 14:32

Yaakov Ellis♦Yaakov Ellis

40.4k27 gold badges131 silver badges173 bronze badges

You can run a second instance of VS and attach it to the first instance of VS (Ctrl+Alt+P). In the first instance set the breakpoints, in the second instance run the designer, and the breakpoint will fire. You can step through the code, but Edit-and-Continue will not work.

For Edit-and-Continue to work, set you control library’s debug options to run a VS with the command line argument being the solution filename. Then you can simply set the breakpoints and hit F5. It will debug just like user code! As a side note, you can do this will VS and Office add-ins also.

answered May 16, 2010 at 18:57

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Question

I’m running VS 2105 Enterprise under Win10 Pro.

Whether I create a new Universal project or load a sample project I get the same error in Designer (say for MainPage.xaml)… even if there is only a <grid>. Showing the page in Design view I get this:

System.NullReferenceException

Object reference not set to an instance of an object.

at Microsoft.VisualStudio.DesignTools.Platform.Metadata.MetadataStore.GetTypeConverter(Type type) at Microsoft.VisualStudio.DesignTools.WindowsXamlDesigner.WindowsUIXamlDesignTimeProperties.ResolveImplementation(IPlatformMetadata
platformMetadata, DesignTimePropertyId neutralProperty, IType declaringType, PropertyChangedCallback callback) at Microsoft.VisualStudio.DesignTools.WindowsXamlDesigner.WindowsUIXamlDesignTimeProperties.RegisterProperty(IPropertyId neutralPropertyKey, IType
declaringType, PropertyChangedCallback callback) at Microsoft.VisualStudio.DesignTools.WindowsXamlDesigner.WindowsUIXamlCommonDesignTimeProperties.Initialize(WindowsUIXamlDesignTimeProperties designTimeProperties) at Microsoft.VisualStudio.DesignTools.WindowsXamlDesigner.WindowsUIXamlDesignTimeProperties..ctor(IPlatformTypes
platformMetadata) at Microsoft.VisualStudio.DesignTools.UniversalXamlDesigner.UniversalXamlPlatformMetadata.CreateDesignTimeProperties() at Microsoft.VisualStudio.DesignTools.WindowsXamlDesigner.Metadata.WindowsUIXamlPlatformMetadata.Initialize() at Microsoft.VisualStudio.DesignTools.WindowsXamlDesigner.WindowsStoreXamlPlatform.Initialize()
at Microsoft.VisualStudio.DesignTools.Platform.PlatformCreatorBase.CreatePlatform(IPlatformReferenceAssemblyResolver referenceAssemblyResolver) at Microsoft.VisualStudio.DesignTools.Designer.Project.ProjectContextManager.GetProjectContext(IHostProject project,
IPlatform platform, Boolean create) at Microsoft.VisualStudio.DesignTools.Designer.Project.ProjectContextManager.GetSourceItemContext(IHostSourceItem sourceItem) at Microsoft.VisualStudio.DesignTools.Designer.DesignerService.CreateDesigner(IHostSourceItem
item, IHostTextEditor editor, CancellationToken cancelToken) at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Remoting.RemoteDesignerService.<>c__DisplayClass12_0.<Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Remoting.IRemoteDesignerService.CreateDesigner>b__0(CancellationToken
cancelToken) at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Remoting.RemoteDesignerService.<>c__DisplayClass6_0`1.<MarshalInWithCancellation>b__0() at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Remoting.STAMarshaler.Call.InvokeWorker()

———————

Digging down in the Log for VS 2015 I see this error reported>

626		Begin package load [Windows Forms Designer Events Service Hosting Package]	{9DA57A40-22DE-4CC9-896A-500489DCE0E7}	VisualStudio	2015/07/31 00:32:25.416
627		End package load [Windows Forms Designer Events Service Hosting Package]	{9DA57A40-22DE-4CC9-896A-500489DCE0E7}	VisualStudio	2015/07/31 00:32:25.418
628	ERROR	Assembly timestamp in MEF Cache does not match loaded assembly timestamp Microsoft.VisualStudio.TestWindow.Interfaces, Version=14.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a; code-base: file:///C:/Program Files (x86)/Microsoft Visual Studio 14.0/Common7/IDE/CommonExtensions/Microsoft/TestWindow/Microsoft.VisualStudio.TestWindow.Interfaces.dll		Microsoft.VisualStudio.CommonIDE.ExtensibilityHosting.VsShellComponentModelHost	2015/07/31 00:32:27.849
629	ERROR	Microsoft.VisualStudio.ExtensibilityHosting.InvalidMEFCacheException: The Visual Studio component cache is out of date. Please restart Visual Studio. at Microsoft.VisualStudio.ExtensibilityHosting.FaultCatchingAssemblyLoader.<LoadAssembly>b__12_0(AssemblyName assemblyNameParam) at Microsoft.VisualStudio.ExtensibilityHosting.FaultCatchingAssemblyLoader.SafeGetOrAdd[TKey,TValue](IDictionary`2 dictionary, TKey key, Func`2 valueFactory) at Microsoft.VisualStudio.ExtensibilityHosting.FaultCatchingAssemblyLoader.LoadAssembly(AssemblyName assemblyName) at Microsoft.VisualStudio.Composition.Reflection.ResolverExtensions.GetManifest(Resolver resolver, AssemblyName assemblyName) at Microsoft.VisualStudio.Composition.Reflection.TypeRef.get_ResolvedType() at Microsoft.VisualStudio.Composition.Reflection.TypeRef.GetResolvedTypeArray(ImmutableArray`1 typeRefs) at Microsoft.VisualStudio.Composition.Reflection.TypeRef.get_ResolvedType() at Microsoft.VisualStudio.Composition.RuntimeComposition.RuntimeImport.get_ImportingSiteType() at Microsoft.VisualStudio.Composition.RuntimeComposition.RuntimeImport.get_ImportingSiteTypeWithoutCollection() at Microsoft.VisualStudio.Composition.RuntimeComposition.RuntimeImport.get_IsLazy() at Microsoft.VisualStudio.Composition.RuntimeComposition.RuntimeImport.get_LazyFactory() at Microsoft.VisualStudio.Composition.RuntimeExportProviderFactory.RuntimeExportProvider.GetValueForImportSite(RuntimePartLifecycleTracker importingPartTracker, RuntimeImport import) at Microsoft.VisualStudio.Composition.RuntimeExportProviderFactory.RuntimeExportProvider.RuntimePartLifecycleTracker.<CreateValue>b__10_0(RuntimeImport import) at System.Linq.Enumerable.WhereSelectArrayIterator`2.MoveNext() at System.Linq.Buffer`1..ctor(IEnumerable`1 source) at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source) at Microsoft.VisualStudio.Composition.RuntimeExportProviderFactory.RuntimeExportProvider.RuntimePartLifecycleTracker.CreateValue() at Microsoft.VisualStudio.Composition.ExportProvider.PartLifecycleTracker.Create() at Microsoft.VisualStudio.Composition.ExportProvider.PartLifecycleTracker.MoveNext(PartLifecycleState nextState) at Microsoft.VisualStudio.Composition.ExportProvider.PartLifecycleTracker.MoveToState(PartLifecycleState requiredState) at Microsoft.VisualStudio.Composition.ExportProvider.PartLifecycleTracker.GetValueReadyToExpose() at Microsoft.VisualStudio.Composition.RuntimeExportProviderFactory.RuntimeExportProvider.<>c__DisplayClass15_0.<GetExportedValueHelper>b__0() at Microsoft.VisualStudio.Composition.RuntimeExportProviderFactory.RuntimeExportProvider.GetValueForImportElement(RuntimePartLifecycleTracker importingPartTracker, RuntimeImport import, RuntimeExport export, Func`3 lazyFactory) at Microsoft.VisualStudio.Composition.RuntimeExportProviderFactory.RuntimeExportProvider.GetValueForImportSite(RuntimePartLifecycleTracker importingPartTracker, RuntimeImport import) at Microsoft.VisualStudio.Composition.RuntimeExportProviderFactory.RuntimeExportProvider.RuntimePartLifecycleTracker.<CreateValue>b__10_0(RuntimeImport import) at System.Linq.Enumerable.WhereSelectArrayIterator`2.MoveNext() at System.Linq.Buffer`1..ctor(IEnumerable`1 source) at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source) at Microsoft.VisualStudio.Composition.RuntimeExportProviderFactory.RuntimeExportProvider.RuntimePartLifecycleTracker.CreateValue() at Microsoft.VisualStudio.Composition.ExportProvider.PartLifecycleTracker.Create() at Microsoft.VisualStudio.Composition.ExportProvider.PartLifecycleTracker.MoveNext(PartLifecycleState nextState) at Microsoft.VisualStudio.Composition.ExportProvider.PartLifecycleTracker.MoveToState(PartLifecycleState requiredState) at Microsoft.VisualStudio.Composition.ExportProvider.PartLifecycleTracker.GetValueReadyToExpose() at Microsoft.VisualStudio.Composition.RuntimeExportProviderFactory.RuntimeExportProvider.<>c__DisplayClass15_0.<GetExportedValueHelper>b__0() at Microsoft.VisualStudio.Composition.DelegateServices.<>c__DisplayClass2_0`1.<As>b__0() at System.Lazy`1.CreateValue() at System.Lazy`1.LazyInitValue() at System.Lazy`1.get_Value() at Microsoft.VisualStudio.Language.Intellisense.Implementation.CodeLensIndicatorService.IndicatorCollection.<>c__DisplayClass13_0.<UpdateTemplateCollection>b__0() at Microsoft.VisualStudio.Text.Utilities.GuardedOperations.CallExtensionPoint(Object errorSource, Action call)		Editor or Editor Extension	2015/07/31 00:32:27.936
630	ERROR	Microsoft.VisualStudio.ExtensibilityHosting.InvalidMEFCacheException: The Visual Studio component cache is out of date. Please restart Visual Studio. at Microsoft.VisualStudio.ExtensibilityHosting.FaultCatchingAssemblyLoader.<LoadAssembly>b__12_0(AssemblyName assemblyNameParam) at Microsoft.VisualStudio.ExtensibilityHosting.FaultCatchingAssemblyLoader.SafeGetOrAdd[TKey,TValue](IDictionary`2 dictionary, TKey key, Func`2 valueFactory) at Microsoft.VisualStudio.ExtensibilityHosting.FaultCatchingAssemblyLoader.LoadAssembly(AssemblyName assemblyName) at Microsoft.VisualStudio.Composition.Reflection.ResolverExtensions.GetManifest(Resolver resolver, AssemblyName assemblyName) at Microsoft.VisualStudio.Composition.Reflection.TypeRef.get_ResolvedType() at Microsoft.VisualStudio.Composition.Reflection.TypeRef.GetResolvedTypeArray(ImmutableArray`1 typeRefs) at Microsoft.VisualStudio.Composition.Reflection.TypeRef.get_ResolvedType() at Microsoft.VisualStudio.Composition.RuntimeComposition.RuntimeImport.get_ImportingSiteType() at Microsoft.VisualStudio.Composition.RuntimeComposition.RuntimeImport.get_ImportingSiteTypeWithoutCollection() at Microsoft.VisualStudio.Composition.RuntimeComposition.RuntimeImport.get_IsLazy() at Microsoft.VisualStudio.Composition.RuntimeComposition.RuntimeImport.get_LazyFactory() at Microsoft.VisualStudio.Composition.RuntimeExportProviderFactory.RuntimeExportProvider.GetValueForImportSite(RuntimePartLifecycleTracker importingPartTracker, RuntimeImport import) at Microsoft.VisualStudio.Composition.RuntimeExportProviderFactory.RuntimeExportProvider.RuntimePartLifecycleTracker.<CreateValue>b__10_0(RuntimeImport import) at System.Linq.Enumerable.WhereSelectArrayIterator`2.MoveNext() at System.Linq.Buffer`1..ctor(IEnumerable`1 source) at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source) at Microsoft.VisualStudio.Composition.RuntimeExportProviderFactory.RuntimeExportProvider.RuntimePartLifecycleTracker.CreateValue() at Microsoft.VisualStudio.Composition.ExportProvider.PartLifecycleTracker.Create() at Microsoft.VisualStudio.Composition.ExportProvider.PartLifecycleTracker.MoveNext(PartLifecycleState nextState) at Microsoft.VisualStudio.Composition.ExportProvider.PartLifecycleTracker.MoveToState(PartLifecycleState requiredState) at Microsoft.VisualStudio.Composition.ExportProvider.PartLifecycleTracker.GetValueReadyToExpose() at Microsoft.VisualStudio.Composition.RuntimeExportProviderFactory.RuntimeExportProvider.<>c__DisplayClass15_0.<GetExportedValueHelper>b__0() at Microsoft.VisualStudio.Composition.RuntimeExportProviderFactory.RuntimeExportProvider.GetValueForImportElement(RuntimePartLifecycleTracker importingPartTracker, RuntimeImport import, RuntimeExport export, Func`3 lazyFactory) at Microsoft.VisualStudio.Composition.RuntimeExportProviderFactory.RuntimeExportProvider.GetValueForImportSite(RuntimePartLifecycleTracker importingPartTracker, RuntimeImport import) at Microsoft.VisualStudio.Composition.RuntimeExportProviderFactory.RuntimeExportProvider.RuntimePartLifecycleTracker.<CreateValue>b__10_0(RuntimeImport import) at System.Linq.Enumerable.WhereSelectArrayIterator`2.MoveNext() at System.Linq.Buffer`1..ctor(IEnumerable`1 source) at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source) at Microsoft.VisualStudio.Composition.RuntimeExportProviderFactory.RuntimeExportProvider.RuntimePartLifecycleTracker.CreateValue() at Microsoft.VisualStudio.Composition.ExportProvider.PartLifecycleTracker.Create() at Microsoft.VisualStudio.Composition.ExportProvider.PartLifecycleTracker.MoveNext(PartLifecycleState nextState) at Microsoft.VisualStudio.Composition.ExportProvider.PartLifecycleTracker.MoveToState(PartLifecycleState requiredState) at Microsoft.VisualStudio.Composition.ExportProvider.PartLifecycleTracker.GetValueReadyToExpose() at Microsoft.VisualStudio.Composition.RuntimeExportProviderFactory.RuntimeExportProvider.<>c__DisplayClass15_0.<GetExportedValueHelper>b__0() at Microsoft.VisualStudio.Composition.DelegateServices.<>c__DisplayClass2_0`1.<As>b__0() at System.Lazy`1.CreateValue() at System.Lazy`1.LazyInitValue() at System.Lazy`1.get_Value() at Microsoft.VisualStudio.Language.Intellisense.Implementation.CodeLensIndicatorService.IndicatorCollection.<>c__DisplayClass13_0.<UpdateTemplateCollection>b__0() at Microsoft.VisualStudio.Text.Utilities.GuardedOperations.CallExtensionPoint(Object errorSource, Action call) — End of stack trace from previous location where exception was thrown — at Microsoft.VisualStudio.Composition.ExportProvider.PartLifecycleTracker.MoveToState(PartLifecycleState requiredState) at Microsoft.VisualStudio.Composition.ExportProvider.PartLifecycleTracker.GetValueReadyToExpose() at Microsoft.VisualStudio.Composition.RuntimeExportProviderFactory.RuntimeExportProvider.<>c__DisplayClass15_0.<GetExportedValueHelper>b__0() at Microsoft.VisualStudio.Composition.RuntimeExportProviderFactory.RuntimeExportProvider.GetValueForImportElement(RuntimePartLifecycleTracker importingPartTracker, RuntimeImport import, RuntimeExport export, Func`3 lazyFactory) at Microsoft.VisualStudio.Composition.RuntimeExportProviderFactory.RuntimeExportProvider.GetValueForImportSite(RuntimePartLifecycleTracker importingPartTracker, RuntimeImport import) at Microsoft.VisualStudio.Composition.RuntimeExportProviderFactory.RuntimeExportProvider.RuntimePartLifecycleTracker.<CreateValue>b__10_0(RuntimeImport import) at System.Linq.Enumerable.WhereSelectArrayIterator`2.MoveNext() at System.Linq.Buffer`1..ctor(IEnumerable`1 source) at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source) at Microsoft.VisualStudio.Composition.RuntimeExportProviderFactory.RuntimeExportProvider.RuntimePartLifecycleTracker.CreateValue() at Microsoft.VisualStudio.Composition.ExportProvider.PartLifecycleTracker.Create() at Microsoft.VisualStudio.Composition.ExportProvider.PartLifecycleTracker.MoveNext(PartLifecycleState nextState) at Microsoft.VisualStudio.Composition.ExportProvider.PartLifecycleTracker.MoveToState(PartLifecycleState requiredState) at Microsoft.VisualStudio.Composition.ExportProvider.PartLifecycleTracker.GetValueReadyToExpose() at Microsoft.VisualStudio.Composition.RuntimeExportProviderFactory.RuntimeExportProvider.<>c__DisplayClass15_0.<GetExportedValueHelper>b__0() at Microsoft.VisualStudio.Composition.DelegateServices.<>c__DisplayClass2_0`1.<As>b__0() at System.Lazy`1.CreateValue() at System.Lazy`1.LazyInitValue() at System.Lazy`1.get_Value() at Microsoft.VisualStudio.Language.Intellisense.Implementation.CodeLensIndicatorService.IndicatorCollection.<>c__DisplayClass13_0.<UpdateTemplateCollection>b__0() at Microsoft.VisualStudio.Text.Utilities.GuardedOperations.CallExtensionPoint(Object errorSource, Action call)		Editor or Editor Extension	2015/07/31 00:32:27.993
631	ERROR	Microsoft.VisualStudio.ExtensibilityHosting.InvalidMEFCacheException: The Visual Studio component cache is out of date. Please restart Visual Studio. at Microsoft.VisualStudio.ExtensibilityHosting.FaultCatchingAssemblyLoader.<LoadAssembly>b__12_0(AssemblyName assemblyNameParam) at Microsoft.VisualStudio.ExtensibilityHosting.FaultCatchingAssemblyLoader.SafeGetOrAdd[TKey,TValue](IDictionary`2 dictionary, TKey key, Func`2 valueFactory) at Microsoft.VisualStudio.ExtensibilityHosting.FaultCatchingAssemblyLoader.LoadAssembly(AssemblyName assemblyName) at Microsoft.VisualStudio.Composition.Reflection.ResolverExtensions.GetManifest(Resolver resolver, AssemblyName assemblyName) at Microsoft.VisualStudio.Composition.Reflection.TypeRef.get_ResolvedType() at Microsoft.VisualStudio.Composition.Reflection.TypeRef.GetResolvedTypeArray(ImmutableArray`1 typeRefs) at Microsoft.VisualStudio.Composition.Reflection.TypeRef.get_ResolvedType() at Microsoft.VisualStudio.Composition.RuntimeComposition.RuntimeImport.get_ImportingSiteType() at Microsoft.VisualStudio.Composition.RuntimeComposition.RuntimeImport.get_ImportingSiteTypeWithoutCollection() at Microsoft.VisualStudio.Composition.RuntimeComposition.RuntimeImport.get_IsLazy() at Microsoft.VisualStudio.Composition.RuntimeComposition.RuntimeImport.get_LazyFactory() at Microsoft.VisualStudio.Composition.RuntimeExportProviderFactory.RuntimeExportProvider.GetValueForImportSite(RuntimePartLifecycleTracker importingPartTracker, RuntimeImport import) at Microsoft.VisualStudio.Composition.RuntimeExportProviderFactory.RuntimeExportProvider.RuntimePartLifecycleTracker.<CreateValue>b__10_0(RuntimeImport import) at System.Linq.Enumerable.WhereSelectArrayIterator`2.MoveNext() at System.Linq.Buffer`1..ctor(IEnumerable`1 source) at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source) at Microsoft.VisualStudio.Composition.RuntimeExportProviderFactory.RuntimeExportProvider.RuntimePartLifecycleTracker.CreateValue() at Microsoft.VisualStudio.Composition.ExportProvider.PartLifecycleTracker.Create() at Microsoft.VisualStudio.Composition.ExportProvider.PartLifecycleTracker.MoveNext(PartLifecycleState nextState) at Microsoft.VisualStudio.Composition.ExportProvider.PartLifecycleTracker.MoveToState(PartLifecycleState requiredState) at Microsoft.VisualStudio.Composition.ExportProvider.PartLifecycleTracker.GetValueReadyToExpose() at Microsoft.VisualStudio.Composition.RuntimeExportProviderFactory.RuntimeExportProvider.<>c__DisplayClass15_0.<GetExportedValueHelper>b__0() at Microsoft.VisualStudio.Composition.RuntimeExportProviderFactory.RuntimeExportProvider.GetValueForImportElement(RuntimePartLifecycleTracker importingPartTracker, RuntimeImport import, RuntimeExport export, Func`3 lazyFactory) at Microsoft.VisualStudio.Composition.RuntimeExportProviderFactory.RuntimeExportProvider.GetValueForImportSite(RuntimePartLifecycleTracker importingPartTracker, RuntimeImport import) at Microsoft.VisualStudio.Composition.RuntimeExportProviderFactory.RuntimeExportProvider.RuntimePartLifecycleTracker.<CreateValue>b__10_0(RuntimeImport import) at System.Linq.Enumerable.WhereSelectArrayIterator`2.MoveNext() at System.Linq.Buffer`1..ctor(IEnumerable`1 source) at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source) at Microsoft.VisualStudio.Composition.RuntimeExportProviderFactory.RuntimeExportProvider.RuntimePartLifecycleTracker.CreateValue() at Microsoft.VisualStudio.Composition.ExportProvider.PartLifecycleTracker.Create() at Microsoft.VisualStudio.Composition.ExportProvider.PartLifecycleTracker.MoveNext(PartLifecycleState nextState) at Microsoft.VisualStudio.Composition.ExportProvider.PartLifecycleTracker.MoveToState(PartLifecycleState requiredState) at Microsoft.VisualStudio.Composition.ExportProvider.PartLifecycleTracker.GetValueReadyToExpose() at Microsoft.VisualStudio.Composition.RuntimeExportProviderFactory.RuntimeExportProvider.<>c__DisplayClass15_0.<GetExportedValueHelper>b__0() at Microsoft.VisualStudio.Composition.DelegateServices.<>c__DisplayClass2_0`1.<As>b__0() at System.Lazy`1.CreateValue() — End of stack trace from previous location where exception was thrown — at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Lazy`1.get_Value() at Microsoft.VisualStudio.Language.Intellisense.Implementation.CodeLensIndicatorService.IndicatorCollection.<>c__DisplayClass13_0.<UpdateTemplateCollection>b__0() at Microsoft.VisualStudio.Text.Utilities.GuardedOperations.CallExtensionPoint(Object errorSource, Action call)		Editor or Editor Extension	2015/07/31 00:32:28.101
632	ERROR	Microsoft.VisualStudio.ExtensibilityHosting.InvalidMEFCacheException: The Visual Studio component cache is out of date. Please restart Visual Studio. at Microsoft.VisualStudio.ExtensibilityHosting.FaultCatchingAssemblyLoader.<LoadAssembly>b__12_0(AssemblyName assemblyNameParam) at Microsoft.VisualStudio.ExtensibilityHosting.FaultCatchingAssemblyLoader.SafeGetOrAdd[TKey,TValue](IDictionary`2 dictionary, TKey key, Func`2 valueFactory) at Microsoft.VisualStudio.ExtensibilityHosting.FaultCatchingAssemblyLoader.LoadAssembly(AssemblyName assemblyName) at Microsoft.VisualStudio.Composition.Reflection.ResolverExtensions.GetManifest(Resolver resolver, AssemblyName assemblyName) at Microsoft.VisualStudio.Composition.Reflection.TypeRef.get_ResolvedType() at Microsoft.VisualStudio.Composition.Reflection.TypeRef.GetResolvedTypeArray(ImmutableArray`1 typeRefs) at Microsoft.VisualStudio.Composition.Reflection.TypeRef.get_ResolvedType() at Microsoft.VisualStudio.Composition.RuntimeComposition.RuntimeImport.get_ImportingSiteType() at Microsoft.VisualStudio.Composition.RuntimeComposition.RuntimeImport.get_ImportingSiteTypeWithoutCollection() at Microsoft.VisualStudio.Composition.RuntimeComposition.RuntimeImport.get_IsLazy() at Microsoft.VisualStudio.Composition.RuntimeComposition.RuntimeImport.get_LazyFactory() at Microsoft.VisualStudio.Composition.RuntimeExportProviderFactory.RuntimeExportProvider.GetValueForImportSite(RuntimePartLifecycleTracker importingPartTracker, RuntimeImport import) at Microsoft.VisualStudio.Composition.RuntimeExportProviderFactory.RuntimeExportProvider.RuntimePartLifecycleTracker.<CreateValue>b__10_0(RuntimeImport import) at System.Linq.Enumerable.WhereSelectArrayIterator`2.MoveNext() at System.Linq.Buffer`1..ctor(IEnumerable`1 source) at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source) at Microsoft.VisualStudio.Composition.RuntimeExportProviderFactory.RuntimeExportProvider.RuntimePartLifecycleTracker.CreateValue() at Microsoft.VisualStudio.Composition.ExportProvider.PartLifecycleTracker.Create() at Microsoft.VisualStudio.Composition.ExportProvider.PartLifecycleTracker.MoveNext(PartLifecycleState nextState) at Microsoft.VisualStudio.Composition.ExportProvider.PartLifecycleTracker.MoveToState(PartLifecycleState requiredState) at Microsoft.VisualStudio.Composition.ExportProvider.PartLifecycleTracker.GetValueReadyToExpose() at Microsoft.VisualStudio.Composition.RuntimeExportProviderFactory.RuntimeExportProvider.<>c__DisplayClass15_0.<GetExportedValueHelper>b__0() at Microsoft.VisualStudio.Composition.RuntimeExportProviderFactory.RuntimeExportProvider.GetValueForImportElement(RuntimePartLifecycleTracker importingPartTracker, RuntimeImport import, RuntimeExport export, Func`3 lazyFactory) at Microsoft.VisualStudio.Composition.RuntimeExportProviderFactory.RuntimeExportProvider.GetValueForImportSite(RuntimePartLifecycleTracker importingPartTracker, RuntimeImport import) at Microsoft.VisualStudio.Composition.RuntimeExportProviderFactory.RuntimeExportProvider.RuntimePartLifecycleTracker.<CreateValue>b__10_0(RuntimeImport import) at System.Linq.Enumerable.WhereSelectArrayIterator`2.MoveNext() at System.Linq.Buffer`1..ctor(IEnumerable`1 source) at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source) at Microsoft.VisualStudio.Composition.RuntimeExportProviderFactory.RuntimeExportProvider.RuntimePartLifecycleTracker.CreateValue() at Microsoft.VisualStudio.Composition.ExportProvider.PartLifecycleTracker.Create() at Microsoft.VisualStudio.Composition.ExportProvider.PartLifecycleTracker.MoveNext(PartLifecycleState nextState) at Microsoft.VisualStudio.Composition.ExportProvider.PartLifecycleTracker.MoveToState(PartLifecycleState requiredState) at Microsoft.VisualStudio.Composition.ExportProvider.PartLifecycleTracker.GetValueReadyToExpose() at Microsoft.VisualStudio.Composition.RuntimeExportProviderFactory.RuntimeExportProvider.<>c__DisplayClass15_0.<GetExportedValueHelper>b__0() at Microsoft.VisualStudio.Composition.DelegateServices.<>c__DisplayClass2_0`1.<As>b__0() at System.Lazy`1.CreateValue() at System.Lazy`1.LazyInitValue() at System.Lazy`1.get_Value() at Microsoft.VisualStudio.Language.Intellisense.Implementation.CodeLensIndicatorService.IndicatorCollection.<>c__DisplayClass13_0.<UpdateTemplateCollection>b__0() at Microsoft.VisualStudio.Text.Utilities.GuardedOperations.CallExtensionPoint(Object errorSource, Action call) — End of stack trace from previous location where exception was thrown — at Microsoft.VisualStudio.Composition.ExportProvider.PartLifecycleTracker.MoveToState(PartLifecycleState requiredState) at Microsoft.VisualStudio.Composition.ExportProvider.PartLifecycleTracker.GetValueReadyToExpose() at Microsoft.VisualStudio.Composition.RuntimeExportProviderFactory.RuntimeExportProvider.<>c__DisplayClass15_0.<GetExportedValueHelper>b__0() at Microsoft.VisualStudio.Composition.RuntimeExportProviderFactory.RuntimeExportProvider.GetValueForImportElement(RuntimePartLifecycleTracker importingPartTracker, RuntimeImport import, RuntimeExport export, Func`3 lazyFactory) at Microsoft.VisualStudio.Composition.RuntimeExportProviderFactory.RuntimeExportProvider.GetValueForImportSite(RuntimePartLifecycleTracker importingPartTracker, RuntimeImport import) at Microsoft.VisualStudio.Composition.RuntimeExportProviderFactory.RuntimeExportProvider.RuntimePartLifecycleTracker.<CreateValue>b__10_0(RuntimeImport import) at System.Linq.Enumerable.WhereSelectArrayIterator`2.MoveNext() at System.Linq.Buffer`1..ctor(IEnumerable`1 source) at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source) at Microsoft.VisualStudio.Composition.RuntimeExportProviderFactory.RuntimeExportProvider.RuntimePartLifecycleTracker.CreateValue() at Microsoft.VisualStudio.Composition.ExportProvider.PartLifecycleTracker.Create() at Microsoft.VisualStudio.Composition.ExportProvider.PartLifecycleTracker.MoveNext(PartLifecycleState nextState) at Microsoft.VisualStudio.Composition.ExportProvider.PartLifecycleTracker.MoveToState(PartLifecycleState requiredState) at Microsoft.VisualStudio.Composition.ExportProvider.PartLifecycleTracker.GetValueReadyToExpose() at Microsoft.VisualStudio.Composition.RuntimeExportProviderFactory.RuntimeExportProvider.<>c__DisplayClass15_0.<GetExportedValueHelper>b__0() at Microsoft.VisualStudio.Composition.DelegateServices.<>c__DisplayClass2_0`1.<As>b__0() at System.Lazy`1.CreateValue() — End of stack trace from previous location where exception was thrown — at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Lazy`1.get_Value() at Microsoft.VisualStudio.Language.Intellisense.Implementation.CodeLensIndicatorService.IndicatorCollection.<>c__DisplayClass13_0.<UpdateTemplateCollection>b__0() at Microsoft.VisualStudio.Text.Utilities.GuardedOperations.CallExtensionPoint(Object errorSource, Action call) —————— as told… I went to Tools> Options> XAML Designer and unchecked «Run project code in the XAML Designer (if supported)» … but it made no difference… Designer does not work in EITHER VS 2015 Enterprise / Win10 Pro OR Blend 2015 Please help, I’m totally stuck Tom

Tom

Answers

This worked for me on 2 different HP products (HP sets the «Platform» environment variable).

delete the «Platform» environment variable in System->Advanced System Settings->Environment Variables …

In my case it said =HPD

Roman Müller, Founder and CEO — Interware LLC
- Proposed as answer by
  
  Wednesday, August 5, 2015 7:51 AM
- Marked as answer by
  Jiayi Li
  Friday, August 7, 2015 8:52 AM

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Я использую VS2010, и если у меня есть форма, открытая в режиме конструктора и запускающая мое приложение, вкладка конструктора больше не будет показывать конструктор форм, но вместо этого будет отображаться ошибка (и она фиксируется только при перезапуске IDE) говоря:

«Чтобы предотвратить возможную потерю данных перед загрузкой конструктора, следует устранить следующие ошибки:»

1 Ошибка:

«Дизайнер не может быть показан для этого файла, потому что ни один из классы внутри него могут быть разработаны. Дизайнер осмотрел следующие классы в файле: ##### — Базовый класС##### может не загружается. Убедитесь, что на сборке указаны ссылки и что все проекты были построены»

Затем я показываю следующий стек вызовов:

в System.ComponentModel.Design.Serialization.CodeDomDesignerLoader.EnsureDocument(менеджер IDesignerSerializationManager)
в System.ComponentModel.Design.Serialization.CodeDomDesignerLoader.PerformLoad(менеджер IDesignerSerializationManager)
в Microsoft.VisualStudio.Design.Serialization.CodeDom.VSCodeDomDesignerLoader.PerformLoad(IDesignerSerializationManager serializationManager)
в System.ComponentModel.Design.Serialization.BasicDesignerLoader.BeginLoad(узел IDesignerLoaderHost)

Любая помощь очень признательна, это действительно раздражает.

Спасибо,

Joel.

Ответ 1

Я получаю эту визуальную студийную ошибку тоже время от времени, и я глубоко игнорирую текст ошибки, вместо этого я делаю следующее:

Закройте вкладку «Дизайн»
Открывает режим разработки двойным щелчком в обозревателе решений или щелчком правой кнопкой мыши вкладку «Исходный код» и выберите «Просмотреть конструктор»
Вдруг все работает снова!

Если вы не поможете, вам, возможно, придется сменить пулю 2 на:
Закройте и перезапустите Visual Studio.

Возможно, это может помочь вам.

Ответ 2

Я обычно закрываю визуальную форму, перестраиваю решение, щелкаю правой кнопкой мыши, затем выбираю «представление конструктора» в коде формы.

Очень, очень раздражает. Я думаю вернуться к VS2008.

Ответ 3

Закройте форму. Очистите раствор. Перестройте решение. Повторно открыть форму. Работал для меня, когда ничего другого не было.

Ответ 4

Я могу избежать перезапуска VS, выполнив следующие

Добавить новый пользовательский элемент управления
Перетащите некоторые пользовательские элементы управления на него (если оно дает вам ошибку, снова создайте решение).
Восстановите свой контроль.

В моем случае у меня есть проект winforms с несколькими настраиваемыми элементами управления, которые используются другими настраиваемыми элементами управления. Всякий раз, когда я открываю некоторые из этих настраиваемых элементов управления, я получаю ошибку «Базовый класс…». Добавление нового настраиваемого элемента управления, создание проекта, а затем добавление некоторых пользовательских элементов управления из моего проекта в новый настраиваемый элемент управления позволило мне открыть настраиваемые элементы управления, которые давали мне ошибку «Базовый класс…».

ОБНОВЛЕНИЕ: Я думаю, что нашел проблему. Мои элементы управления не были правильно добавлены в файл csproj. В файле csproj файлы для частичных классов элементов/компонентов пользовательского интерфейса должны иметь атрибут «DependentUpon».

E.x.:
раньше:

<Compile Include="WindowsFormsDataGridView.cs">
    <SubType>Component</SubType>
</Compile>
<Compile Include="WindowsFormsDataGridView.Designer.cs" />

после

<Compile Include="WindowsFormsDataGridView.cs">
    <SubType>Component</SubType>
</Compile>
<Compile Include="WindowsFormsDataGridView.Designer.cs">
    <DependentUpon>DataGridView.cs</DependentUpon>
</Compile>

Ответ 5

У меня была такая же проблема, и я смог решить эту проблему, создав новый проект, а затем скомпилировав и запустив проект, а затем я импортировал все файлы и снова запускал проект, и автоматически он работал снова, ничего лишнего не делал.

Ответ 6

У меня была ситуация, когда пользовательский элемент управления, похоже, создавал ошибку (не уверен, почему), поэтому я удалил ссылки на пользовательский элемент управления из формы, и ошибка исчезла.

Ответ 7

Кажется, что после установки SP1 проблема ушла.

Спасибо за вашу помощь всем.

Ответ 8

У меня была та же проблема с использованием элемента управления с помощью Generics

      MvpUserControl<Presenter,IViewMode> : UserControl

что я делаю. Удалите ссылку и добавьте снова, очистите и перестройте решение. Надеюсь, это может быть полезно для кого-либо еще.

Ответ 9

У меня была такая же проблема с VS2010 SP1. Наконец, с помощью Центра обновления Windows я увидел некоторые обновления для Visual Studio и .Net, я их установил и больше не происходит.

Ответ 10

Старый пост, но для тех, кто может найти это…

Просто вмешался в эту ошибку, и для меня это было относительно простое исправление.

Установлено, что это может иметь какое-то отношение к именам ваших классов и переименовать проблематичный класс в более высокий порядок. Это алфавитный порядок, который он появляется в сборке (где A выше Z).

Статья MSDN

Удачи.

Ответ 11

Эта ошибка возникает, если класс Form не является первым классом в файле, например, если в начале файла есть вспомогательный класс.

Чтобы решить эту проблему, переместите все остальные классы, кроме класса Form, в нижнюю часть файла.

Ответ 12

Не используйте код Form1.Designer.cs. Переместите свою логику в Form1.cs (нажмите F7 на вкладке Form1.cs [Дизайн]).

Ответ 13

«В файле проекта (.vcxproj) найдите запись для цели Рамочная версия. Например, если ваш проект предназначен для использования .NET Framework 4.5, найдите v4.5 в элемент элемента.»

(Microsoft)

В моем случае «v4.5» не существовало, поэтому я добавляю его, и теперь все хорошо.

Ответ 14

Я попробовал чистое решение и пересобрать решение и работал на меня. Надеюсь, это поможет!

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