OWIN显示黄色死机屏幕

Question

我们有一个旧的Web表单项目，我们想在其中添加OWIN。Startup类将添加到项目中。我们既有 assebmly 属性owin:appStartup也有配置应用程序密钥。我们在项目中引用了Microsoft.Owin.Host.SystemWeb版本 4.0.0.0。每当 OWIN 想要发现它的 StartUp 类时，我们都会得到一个黄色的死机屏幕，并显示 FormatException(日期时间字符串格式不正确(下面是异常的堆栈跟踪：

[FormatException: The string was not recognized as a valid DateTime. There is an unknown word starting at index 20.]
   System.DateTimeParse.Parse(String s, DateTimeFormatInfo dtfi, DateTimeStyles styles) [phone]
   System.Windows.Forms.TypeLibraryTimeStampAttribute..ctor(String timestamp) +53
   System.Reflection.CustomAttribute._CreateCaObject(RuntimeModule pModule, IRuntimeMethodInfo pCtor, Byte** ppBlob, Byte* pEndBlob, Int32* pcNamedArgs) +0
   System.Reflection.CustomAttribute.CreateCaObject(RuntimeModule module, IRuntimeMethodInfo ctor, IntPtr& blob, IntPtr blobEnd, Int32& namedArgs) +48
   System.Reflection.CustomAttribute.GetCustomAttributes(RuntimeModule decoratedModule, Int32 decoratedMetadataToken, Int32 pcaCount, RuntimeType attributeFilterType, Boolean mustBeInheritable, IList derivedAttributes, Boolean isDecoratedTargetSecurityTransparent) +787
   System.Reflection.CustomAttribute.GetCustomAttributes(RuntimeAssembly assembly, RuntimeType caType) +144
   Owin.Loader.DefaultLoader.SearchForStartupAttribute(String friendlyName, IList`1 errors, Boolean& conflict) +190
   Owin.Loader.DefaultLoader.GetDefaultConfiguration(String friendlyName, IList`1 errors) +68
   Owin.Loader.DefaultLoader.LoadImplementation(String startupName, IList`1 errorDetails) +89
   Owin.Loader.DefaultLoader.Load(String startupName, IList`1 errorDetails) +30
   Microsoft.Owin.Host.SystemWeb.OwinBuilder.GetAppStartup() +165
   Microsoft.Owin.Host.SystemWeb.OwinHttpModule.InitializeBlueprint() +37
   System.Threading.LazyInitializer.EnsureInitializedCore(T& target, Boolean& initialized, Object& syncLock, Func`1 valueFactory) +135
   Microsoft.Owin.Host.SystemWeb.OwinHttpModule.Init(HttpApplication context) +160
   System.Web.HttpApplication.RegisterEventSubscriptionsWithIIS(IntPtr appContext, HttpContext context, MethodInfo[] handlers) +580
   System.Web.HttpApplication.InitSpecial(HttpApplicationState state, MethodInfo[] handlers, IntPtr appContext, HttpContext context) +165
   System.Web.HttpApplicationFactory.GetSpecialApplicationInstance(IntPtr appContext, HttpContext context) +267
   System.Web.Hosting.PipelineRuntime.InitializeApplication(IntPtr appContext) +341
[HttpException (0x80004005): The string was not recognized as a valid DateTime. There is an unknown word starting at index 20.]
   System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +523
   System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +107
   System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context) +688

我们还有其他运行良好的网络表单项目，我不明白我们的项目有什么问题。

Answer 1

根据您的堆栈跟踪，项目中的某个位置必须有一个TypeLibraryTimeStampAttribute，其中包含无法用 DateTime 解析的无效输入。

您的问题可能会通过删除TypeLibraryTimeStampAttribute或将其输入更改为有效输入来解决。