System.ArgumentNullException是如何进行的？ [英] How is System.ArgumentNullException going on?

问题描述

我在Phone 7上使用visual studio express为WP启动了一个新项目，但在第一次开始时收到了一组错误信息，我什么都没改变！

I started a new project on Phone 7 using visual studio express for WP, but got a set of error message at the very first beginning, and I changed nothing!

有什么问题？我正在使用.net3.5。并且w7x86

what's the problem? I am using .net3.5 something. And w7x86

 

System.ArgumentNullException

Value cannot be null.

Parameter name: parentContext

   at Microsoft.Windows.Design.Metadata.ReflectionMetadataContext..ctor(IMetadataContext parentContext)

   at MS.Internal.Host.ProjectMetadataContext..ctor(IMetadataContext platformMetadata, AssemblyReferenceProvider referenceProvider)

   at MS.Internal.Host.ProjectMetadataContext.FromReferences(AssemblyReferenceProvider referenceProvider)

   at MS.Internal.Designer.VSDesigner.GetMetadataForDesignerContext(DesignerContext designerContext)

   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()

推荐答案

您好，
  它表示参数 代码中的任何构造函数或函数过程都提供null值（即）Nothing。

Hi,
   It means a parameter of  any constructor or a function procedure in your code is supplied with null value (ie) Nothing.

这篇关于System.ArgumentNullException是如何进行的？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！