I am getting below error in my XAML page and UI doesnt load in the designer. However UI runs properly.
Even if I remove everything from the XAML form, I still get this error.
Does any body has any idea about it ?
System.InvalidOperationException Operation is not valid due to the current state of the object. at Microsoft.MetadataReader.MetadataOnlyCommonArrayType.GetGenericTypeDefinition() at Microsoft.VisualStudio.Shell.Design.TypeWrapper.GetGenericTypeDefinition() at Microsoft.VisualStudio.Shell.Design.VsTargetFrameworkUtil.TypesMatch(Type tfpType, Type rtType) at Microsoft.VisualStudio.Shell.Design.VsTargetFrameworkUtil.FindBestRuntimeMethodMatch(MethodBase tfpMethod, List1 rtMethods) at Microsoft.VisualStudio.Shell.Design.VsTargetFrameworkUtil.GetRuntimeMethod(MethodBase method) at Microsoft.VisualStudio.Shell.Design.VsTargetFrameworkMethodInfo.get_RuntimeMethod() at Microsoft.VisualStudio.Shell.Design.VsTargetFrameworkUtil.EnsureRuntimeMethod(MethodBase method) at Microsoft.VisualStudio.Shell.Design.VsTargetFrameworkUtil.GetRuntimeTypeVariable(Type type) at Microsoft.VisualStudio.Shell.Design.VsTargetFrameworkUtil.GetRuntimeType(Type type) at Microsoft.VisualStudio.Shell.Design.VsTargetFrameworkUtil.EnsureRuntimeType(Type type) at Microsoft.VisualStudio.Shell.Design.VsTargetFrameworkUtil.GetRuntimeType(Type type) at Microsoft.VisualStudio.Shell.Design.VsTargetFrameworkType.TryGetRuntimeType() at Microsoft.VisualStudio.Shell.Design.VsTargetFrameworkUtil.EnsureRuntimeType(Type type) at Microsoft.VisualStudio.Shell.Design.VsTargetFrameworkProvider.GetRuntimeType(Type reflectionType) at MS.Internal.Package.VSIsolationProviderService.RemoteReferenceProxy.VsReflectionResolver.GetRuntimeType(Type reflectionType) at Microsoft.Windows.Design.Metadata.ReflectionMetadataContext.CachingReflectionResolver.GetRuntimeType(Type reflectionType) at Microsoft.Windows.Design.Metadata.ReflectionMetadataContext.Microsoft.Windows.Design.Metadata.IReflectionResolver.GetRuntimeType(Type reflectionType) at MS.Internal.Metadata.ClrType.get_RuntimeMember() at MS.Internal.Metadata.ClrMember1.Microsoft.Windows.Design.Metadata.Reflection.IReflectionMember.get_MemberInfo() at Microsoft.Windows.Design.Metadata.ReflectionMetadataContext.IsAssignableFrom(ITypeMetadata requesting, ITypeMetadata target) at MS.Internal.Metadata.ClrType.IsAssignableFrom(ITypeMetadata type) at MS.Internal.Design.Metadata.Xaml.AttachableProperty.IsAttachableTo(ITypeMetadata targetType, ParentScope scope) at MS.Internal.Design.Metadata.Xaml.XamlType.<FindAttachableProperties>d__0.MoveNext() at Microsoft.Windows.Design.Metadata.Xaml.XamlExtensionImplementations.<FindAttachableProperties>d__7.MoveNext() at MS.Internal.VirtualModel.VirtualModelPropertyCollection.<GetUncachedProperties>d__0.MoveNext() at System.Linq.Buffer1..ctor(IEnumerable1 source) at System.Linq.Enumerable.ToArray[TSource](IEnumerable1 source) at MS.Internal.VirtualModel.VirtualModelPropertyCollection.GetEnumerator() at MS.Internal.VirtualModel.VirtualModelUtilities.WrapProperties(IVirtualModelItem item) at MS.Internal.VirtualModel.VirtualModelItem.System.ComponentModel.ICustomTypeDescriptor.GetProperties() at System.ComponentModel.TypeDescriptor.MergedTypeDescriptor.System.ComponentModel.ICustomTypeDescriptor.GetProperties() at System.ComponentModel.TypeDescriptor.GetPropertiesImpl(Object component, Attribute[] attributes, Boolean noCustomTypeDesc, Boolean noAttributes) at System.Windows.PropertyPath.ResolvePropertyName(String name, Object item, Type ownerType, Object context, Boolean throwOnError) at MS.Internal.Data.PropertyPathWorker.GetInfo(Int32 k, Object item, SourceValueState& svs) at MS.Internal.Data.PropertyPathWorker.ReplaceItem(Int32 k, Object newO, Object parent) at MS.Internal.Data.PropertyPathWorker.UpdateSourceValueState(Int32 k, ICollectionView collectionView, Object newValue, Boolean isASubPropertyChange) at MS.Internal.Data.ClrBindingWorker.AttachDataItem() at System.Windows.Data.BindingExpression.Activate(Object item) at System.Windows.Data.BindingExpression.AttachToContext(AttachAttempt attempt) at System.Windows.Data.BindingExpression.AttachOverride(DependencyObject target, DependencyProperty dp) at System.Windows.Data.MultiBindingExpression.AttachBindingExpression(Int32 i, Boolean replaceExisting) at System.Windows.Data.MultiBindingExpression.AttachOverride(DependencyObject d, DependencyProperty dp) at System.Windows.Data.BindingExpressionBase.Attach(DependencyObject target, DependencyProperty dp) at System.Windows.Data.BindingExpressionBase.OnAttach(DependencyObject d, DependencyProperty dp) at System.Windows.DependencyObject.SetValueCommon(DependencyProperty dp, Object value, PropertyMetadata metadata, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType, Boolean isInternal) at System.Windows.Data.BindingOperations.SetBinding(DependencyObject target, DependencyProperty dp, BindingBase binding) at MS.Internal.GridControl.GridRowAdornerBase..ctor(ModelItem gridItem, ModelItem rowItem) at MS.Internal.GridControl.GridRowSelectAdorner..ctor(ModelItem grid, ModelItem row) at MS.Internal.GridControl.GridDesigner.EnsureRowAdorners(ModelItem rowDefModel, Boolean withHandle) at MS.Internal.GridControl.GridDesigner.EnsureAllRowAdorners() at MS.Internal.GridControl.GridDesigner.InitGridDesigner() at MS.Internal.GridControl.GridDesigner.GetDesigner(ModelItem gridItem) at MS.Internal.GridControl.AlwaysVisibleGridAdornerProvider.Activate(ModelItem item) at Microsoft.Windows.Design.Interaction.AdornerProvider.InvokeActivate(EditingContext context, ModelItem item) at MS.Internal.Features.AdornerProviderFeatureConnector.FeatureProvidersAdded(ModelItem item, IEnumerable1 extensions) at Microsoft.Windows.Design.Policies.PolicyDrivenFeatureConnector1.UpdateFeatureProviders() at MS.Internal.Features.PolicyDrivenToolFeatureConnector1.UpdateCurrentTool(Tool newTool) at MS.Internal.Features.PolicyDrivenToolFeatureConnector1.<.ctor>b__0(Tool newTool) at Microsoft.Windows.Design.ContextItemManager.SubscribeProxy1.SubscribeContext(ContextItem item) at Microsoft.Windows.Design.SubscribeContextCallback.Invoke(ContextItem item) at Microsoft.Windows.Design.EditingContext.DefaultContextItemManager.OnItemChanged(ContextItem item) at Microsoft.Windows.Design.EditingContext.DefaultContextItemManager.SetValue(ContextItem value) at MS.Internal.Host.ToolSubsystem.ActivateTool(ToolFactory toolFactory) at MS.Internal.Host.ToolSubsystem..ctor(EditingContext editingContext, DesignerContext designerContext) at MS.Internal.Host.Designer.Load() at MS.Internal.Designer.VSDesigner.Load() at MS.Internal.Designer.VSIsolatedDesigner.VSIsolatedView.Load() at MS.Internal.Designer.VSIsolatedDesigner.VSIsolatedDesignerFactory.Load(IsolatedView view) at MS.Internal.Host.Isolation.IsolatedDesigner.BootstrapProxy.LoadDesigner(IsolatedDesignerFactory factory, IsolatedView view) at MS.Internal.Host.Isolation.IsolatedDesigner.BootstrapProxy.LoadDesigner(IsolatedDesignerFactory factory, IsolatedView view) at MS.Internal.Host.Isolation.IsolatedDesigner.Load() at MS.Internal.Designer.DesignerPane.LoadDesignerView(Boolean isReload)
Ashish Dhyani