An unhandle Exception occered

Question

1.00/5 (1 vote)

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VS2010

System.NullReferenceException
Object reference not set to an instance of an object.
at Microsoft.Windows.Design.Platform.SilverlightMetadataContext.SilverlightXamlExtensionImplementations.<getxmlnamespacecompatibilitymappings>d__8.MoveNext()
at MS.Internal.Design.Metadata.ReflectionProjectNode.BuildSubsumption()
at MS.Internal.Design.Metadata.ReflectionProjectNode.SubsumingNamespace(Identifier identifier)
at MS.Internal.Design.Markup.XmlElement.BuildScope(PrefixScope parentScope, IParseContext context)
at MS.Internal.Design.Markup.XmlElement.ConvertToXaml(XamlElement parent, PrefixScope parentScope, IParseContext context, IMarkupSourceProvider provider)
at MS.Internal.Design.DocumentModel.DocumentTrees.Markup.XamlSourceDocument.FullParse(Boolean convertToXamlWithErrors)
at MS.Internal.Design.DocumentModel.DocumentTrees.Markup.XamlSourceDocument.get_RootItem()
at Microsoft.Windows.Design.DocumentModel.Trees.ModifiableDocumentTree.get_ModifiableRootItem()
at Microsoft.Windows.Design.DocumentModel.MarkupDocumentManagerBase.get_LoadState()
at MS.Internal.Host.PersistenceSubsystem.Load()
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()

I am using visualStudio 2010,MicrosoftSilverlight and MicrosoftSilverlight 3 sdk is installed on my system.

plese help me. how to get my Xaml (Design Form).

Posted 22-Jan-13 20:11pm

praveen kadimi

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Comments

Sergey Alexandrovich Kryukov 23-Jan-13 2:59am

How much longer? Some provide code without exception information, other exception information without code. How about those who can think? :-)
—SA

3 solutions

Solution 1

This error is just not sufficient to figure out the real problem.
Looks like you have referencing an attribute of an object that is null.

Posted 22-Jan-13 20:23pm

Abhinav S

Comments

praveen kadimi 23-Jan-13 4:50am

i uninstall the Micrisoft3Sdk then resolve the problem thank u for information

Solution 3

I Install VisualStudio2010 SP1 and Silverlight5 install the problem is solve

Posted 25-Feb-13 19:02pm

praveen kadimi

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praveen kadimi · Accepted Answer · 2013-01-22T22:52:00

Solution 2

just uninstall the MicrosoftSilverlight 3 SDK and then it works properly

Posted 22-Jan-13 22:52pm

praveen kadimi

Comments

praveen kadimi 26-Feb-13 1:01am

I Install VisualStudio2010 SP1 and Silverlight5 install the problem is solve