Question

我们有一个使用WebForms .aspx文件的应用程序几乎所有东西。 Latley我们一直在使用预编译的RazorViews，通过简单地在我们的项目中删除一个新的dll来获取nicley打包功能。但现在我们发现我们的预编译视图似乎与我们的VirtualPathProviders冲突。

从外部dll加载VirtualPathProviders时，应用程序尝试为所有请求加载PrecompiledApp.config（我们没有得到它）。提供者加载了反射。我们在与注册相同的项目中有一些VirtualPathProviders，它们工作正常，但是当我们使用HostingEnvironment.RegisterVirtualPathProvider从外部dll注册提供程序时，我们遇到了这个问题。

如果我们添加文件PrecompiledApp.config，它会尝试获取_appstart.cshtml，依此类推。在通过这个例外之前，我们必须拥有以下所有的所有文件：

PrecompiledApp.config
_appstart.cshtml
_PageStart.cshtml
_ViewStart.cshtml
查看/ _ViewStart.cshtml
查看/共享/ _ViewStart.cshtml
default.cshtml

我们最终在default.cshtml中，其余的应用程序正常工作。由于我们希望使用apsx文件作为默认值，因此这不是一个可接受的解决方案。我们也担心会出现更多问题，因为我们不知道为什么会这样。

我们尝试过这种加载我们的提供程序的方法，但我们仍然得到同样的错误： http://sunali.com/2008/01/09/virtualpathprovider-in-precompiled-web-sites/

例外：

Could not find file 'C:\MyApp\PrecompiledApp.config'.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. 

Exception Details: System.IO.FileNotFoundException: Could not find file 'C:\MyApp\PrecompiledApp.config'.

Source Error: 

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace: 


[FileNotFoundException: Could not find file 'C:\MyApp\PrecompiledApp.config'.]
   System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath) +12899479
   System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy, Boolean useLongPath) +2481
   System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, FileOptions options, String msgPath, Boolean bFromProxy) +229
   System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share) +102
   System.Web.Hosting.MapPathBasedVirtualFile.Open() +105
   System.Web.WebPages.BuildManagerWrapper.IsNonUpdatablePrecompiledApp() +157
   System.Web.WebPages.BuildManagerWrapper..ctor(VirtualPathProvider vpp, IVirtualPathUtility virtualPathUtility) +48
   System.Web.WebPages.VirtualPathFactoryManager.<.cctor>b__6() +90
   System.Lazy`1.CreateValue() +12776623
   System.Lazy`1.LazyInitValue() +355
   System.Web.WebPages.ApplicationStartPage.ExecuteStartPage(HttpApplication application) +131
   System.Web.WebPages.WebPageHttpModule.StartApplication(HttpApplication application, Action`1 executeStartPage, EventHandler applicationStart) +98
   System.Web.WebPages.WebPageHttpModule.InitApplication(HttpApplication application) +75
   System.Web.WebPages.WebPageHttpModule.Init(HttpApplication application) +268
   System.Web.HttpApplication.RegisterEventSubscriptionsWithIIS(IntPtr appContext, HttpContext context, MethodInfo[] handlers) +575
   System.Web.HttpApplication.InitSpecial(HttpApplicationState state, MethodInfo[] handlers, IntPtr appContext, HttpContext context) +352
   System.Web.HttpApplicationFactory.GetSpecialApplicationInstance(IntPtr appContext, HttpContext context) +407
   System.Web.Hosting.PipelineRuntime.InitializeApplication(IntPtr appContext) +375

[HttpException (0x80004005): Could not find file 'C:\MyApp\PrecompiledApp.config'.]
   System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +11700992
   System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +141
   System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context) +4869221

Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.272

Answer 1

您确定VirtualPathProvider的FileExists对PrecompiledApp.config返回false吗？

IsNonUpdatablePrecompiledApp标志在实际调用Open之前调用vpp上的FileExists，以防止发生异常。

使用预编译的Razor视图和VirtualPathProviders时找不到文件PrecompiledApp.config

1 个答案: