silverlight2报错，请问什么原因

Question

Error 5 The "ValidateXaml" task failed unexpectedly.
System.IO.FileNotFoundException: Could not load file or assembly 'System.Core, Version=2.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e' or one of its dependencies. 系统找不到指定的文件。
File name: 'System.Core, Version=2.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'
   at System.ModuleHandle.ResolveType(Int32 typeToken, RuntimeTypeHandle* typeInstArgs, Int32 typeInstCount, RuntimeTypeHandle* methodInstArgs, Int32 methodInstCount)
   at System.ModuleHandle.ResolveTypeHandle(Int32 typeToken, RuntimeTypeHandle[] typeInstantiationContext, RuntimeTypeHandle[] methodInstantiationContext)
   at System.Reflection.Module.ResolveType(Int32 metadataToken, Type[] genericTypeArguments, Type[] genericMethodArguments)
   at System.Reflection.CustomAttribute.FilterCustomAttributeRecord(CustomAttributeRecord caRecord, MetadataImport scope, Assembly& lastAptcaOkAssembly, Module decoratedModule, MetadataToken decoratedToken, RuntimeType attributeFilterType, Boolean mustBeInheritable, Object[] attributes, IList derivedAttributes, RuntimeType& attributeType, RuntimeMethodHandle& ctor, Boolean& ctorHasParameters, Boolean& isVarArg)
   at System.Reflection.CustomAttribute.GetCustomAttributes(Module decoratedModule, Int32 decoratedMetadataToken, Int32 pcaCount, RuntimeType attributeFilterType, Boolean mustBeInheritable, IList derivedAttributes)
   at System.Reflection.CustomAttribute.GetCustomAttributes(Assembly assembly, RuntimeType caType)
   at System.Reflection.Assembly.GetCustomAttributes(Type attributeType, Boolean inherit)
   at System.Attribute.GetCustomAttributes(Assembly element, Type attributeType, Boolean inherit)
   at MS.Internal.Xaml.MS.Impl.XamlSystemBinding.AddPairsFromAssembly(XamlSchemaContext schemaContext, Assembly asm, String uri, List`1 pairs)
   at MS.Internal.Xaml.MS.Impl.XamlSystemBinding.SearchForXamlNamespace(XamlSchemaContext schemaContext, String uriString, IEnumerable`1 referenceAssemblies)
   at MS.Internal.Xaml.XamlSchemaContext.GetXamlNamespace(String xmlns, Assembly localAssembly)
   at MS.Internal.Xaml.XamlSchemaContext.GetXamlNamespace(String xmlns)
   at MS.MarkupCompiler.ValidationPass.ValidateXaml(String fileName, Assembly[] assemblies, Assembly callingAssembly, TaskLoggingHelper log, Boolean shouldThrow)
   at Microsoft.Silverlight.Build.Tasks.ValidateXaml.XamlValidator.Execute()
   at Microsoft.Silverlight.Build.Tasks.ValidateXaml.XamlValidator.Execute()
   at Microsoft.Silverlight.Build.Tasks.ValidateXaml.Execute()
   at Microsoft.Build.BuildEngine.TaskEngine.ExecuteInstantiatedTask(EngineProxy engineProxy, ItemBucket bucket, TaskExecutionMode howToExecuteTask, ITask task, Boolean& taskResult)

 SilverlightApplication2

Answer 1

系统找不到System.Core.dll这个文件,自己手动添加到项目里试试

Answer 2

还是不可以呀

Answer 3

那是不是还有别的错误,方便把程序传个地方帮你看看,是编译通过,运行报错吧?

Answer 4

我以前也经常遇到这种问题。我的原因是silverlight版本问题，不知道你的是不是。试一下安装silverlight3.0。

Answer 5

sl版本问题

Answer 6

不是版本问题，我装的sl2，运行RadControls for Silverlight Q1 2009 Demo Application是没有问题的，但是一引用它的控件就这个错误。

Answer 7

都是在编译时报的错

Answer 8

不是版本问题，我装的sl2，运行RadControls for Silverlight Q1 2009 Demo Application是没有问题的，但是一引用它的控件就这个错误。

第三方开发的控件还是去问下第三方的技术支持比较好.这些付费控件,应该会提供相应的支持的.

这个不是Silverlight本身的问题,请仔细阅读第三方的开发手册之后再开发程式.

建议还是用一些大众开源的控件,比如Silverlight Tools Kit来讨论:)

Answer 9

此问题已解决！
解决方法：