在 Visual Studio for Mac 上运行 .NET MVC 项目时出现 System.InvalidOperationException答案

【问题标题】：System.InvalidOperationException when running .NET MVC project on Visual Studio for Mac在 Visual Studio for Mac 上运行 .NET MVC 项目时出现 System.InvalidOperationException
【发布时间】：2017-11-17 04:24:05
【问题描述】：

我正在尝试将我们在 Visual Studio 2017 社区中开发的项目导入 Visual Studio for Mac。就构建项目和在数据库中传播数据而言，一切似乎都在工作，但是在显示 CSHTMl 页面时，它会引发以下异常：

    System.InvalidOperationException
    The view found at '~/Views/Account/login.cshtml' was not created.

Description: HTTP 500.Error processing request.
Details: Non-web exception. Exception origin (name of application or object): System.Web.Mvc.
Exception stack trace:
  at System.Web.Mvc.BuildManagerCompiledView.Render (System.Web.Mvc.ViewContext viewContext, System.IO.TextWriter writer) [0x00061] in <cc73190bab9d435c831510ff295c572a>:0 
  at System.Web.Mvc.ViewResultBase.ExecuteResult (System.Web.Mvc.ControllerContext context) [0x00080] in <cc73190bab9d435c831510ff295c572a>:0 
  at System.Web.Mvc.ControllerActionInvoker.InvokeActionResult (System.Web.Mvc.ControllerContext controllerContext, System.Web.Mvc.ActionResult actionResult) [0x00000] in <cc73190bab9d435c831510ff295c572a>:0 
  at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive (System.Collections.Generic.IList`1[T] filters, System.Int32 filterIndex, System.Web.Mvc.ResultExecutingContext preContext, System.Web.Mvc.ControllerContext controllerContext, System.Web.Mvc.ActionResult actionResult) [0x0000b] in <cc73190bab9d435c831510ff295c572a>:0 
  at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive (System.Collections.Generic.IList`1[T] filters, System.Int32 filterIndex, System.Web.Mvc.ResultExecutingContext preContext, System.Web.Mvc.ControllerContext controllerContext, System.Web.Mvc.ActionResult actionResult) [0x0009b] in <cc73190bab9d435c831510ff295c572a>:0 
  at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters (System.Web.Mvc.ControllerContext controllerContext, System.Collections.Generic.IList`1[T] filters, System.Web.Mvc.ActionResult actionResult) [0x0000a] in <cc73190bab9d435c831510ff295c572a>:0 
  at System.Web.Mvc.Async.AsyncControllerActionInvoker+<>c__DisplayClass21+<>c__DisplayClass2b.<BeginInvokeAction>b__1c () [0x0008a] in <cc73190bab9d435c831510ff295c572a>:0 
  at System.Web.Mvc.Async.AsyncControllerActionInvoker+<>c__DisplayClass21.<BeginInvokeAction>b__1e (System.IAsyncResult asyncResult) [0x00041] in <cc73190bab9d435c831510ff295c572a>:0 
  at System.Web.Mvc.Async.AsyncResultWrapper+WrappedAsyncResult`1[TResult].CallEndDelegate (System.IAsyncResult asyncResult) [0x00000] in <cc73190bab9d435c831510ff295c572a>:0 
  at System.Web.Mvc.Async.AsyncResultWrapper+WrappedAsyncResultBase`1[TResult].End () [0x00029] in <cc73190bab9d435c831510ff295c572a>:0 
  at System.Web.Mvc.Async.AsyncResultWrapper.End[TResult] (System.IAsyncResult asyncResult, System.Object tag) [0x00007] in <cc73190bab9d435c831510ff295c572a>:0 
  at System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction (System.IAsyncResult asyncResult) [0x00000] in <cc73190bab9d435c831510ff295c572a>:0 
  at System.Web.Mvc.Controller.<BeginExecuteCore>b__1d (System.IAsyncResult asyncResult, System.Web.Mvc.Controller+ExecuteCoreState innerState) [0x00000] in <cc73190bab9d435c831510ff295c572a>:0 
  at (wrapper delegate-invoke) System.Web.Mvc.Async.EndInvokeVoidDelegate`1[System.Web.Mvc.Controller+ExecuteCoreState]:invoke_void_IAsyncResult_TState (System.IAsyncResult,System.Web.Mvc.Controller/ExecuteCoreState)
  at System.Web.Mvc.Async.AsyncResultWrapper+WrappedAsyncVoid`1[TState].CallEndDelegate (System.IAsyncResult asyncResult) [0x00000] in <cc73190bab9d435c831510ff295c572a>:0 
  at System.Web.Mvc.Async.AsyncResultWrapper+WrappedAsyncResultBase`1[TResult].End () [0x00029] in <cc73190bab9d435c831510ff295c572a>:0 
  at System.Web.Mvc.Async.AsyncResultWrapper.End[TResult] (System.IAsyncResult asyncResult, System.Object tag) [0x00007] in <cc73190bab9d435c831510ff295c572a>:0 
  at System.Web.Mvc.Async.AsyncResultWrapper.End (System.IAsyncResult asyncResult, System.Object tag) [0x00000] in <cc73190bab9d435c831510ff295c572a>:0 
  at System.Web.Mvc.Controller.EndExecuteCore (System.IAsyncResult asyncResult) [0x00000] in <cc73190bab9d435c831510ff295c572a>:0 
  at System.Web.Mvc.Controller.<BeginExecute>b__15 (System.IAsyncResult asyncResult, System.Web.Mvc.Controller controller) [0x00000] in <cc73190bab9d435c831510ff295c572a>:0 
  at System.Web.Mvc.Async.AsyncResultWrapper+WrappedAsyncVoid`1[TState].CallEndDelegate (System.IAsyncResult asyncResult) [0x00000] in <cc73190bab9d435c831510ff295c572a>:0 
  at System.Web.Mvc.Async.AsyncResultWrapper+WrappedAsyncResultBase`1[TResult].End () [0x00029] in <cc73190bab9d435c831510ff295c572a>:0 
  at System.Web.Mvc.Async.AsyncResultWrapper.End[TResult] (System.IAsyncResult asyncResult, System.Object tag) [0x00007] in <cc73190bab9d435c831510ff295c572a>:0 
  at System.Web.Mvc.Async.AsyncResultWrapper.End (System.IAsyncResult asyncResult, System.Object tag) [0x00000] in <cc73190bab9d435c831510ff295c572a>:0 
  at System.Web.Mvc.Controller.EndExecute (System.IAsyncResult asyncResult) [0x00000] in <cc73190bab9d435c831510ff295c572a>:0 
  at System.Web.Mvc.Controller.System.Web.Mvc.Async.IAsyncController.EndExecute (System.IAsyncResult asyncResult) [0x00000] in <cc73190bab9d435c831510ff295c572a>:0 
  at System.Web.Mvc.MvcHandler.<BeginProcessRequest>b__5 (System.IAsyncResult asyncResult, System.Web.Mvc.MvcHandler+ProcessRequestState innerState) [0x00000] in <cc73190bab9d435c831510ff295c572a>:0 
  at (wrapper delegate-invoke) System.Web.Mvc.Async.EndInvokeVoidDelegate`1[System.Web.Mvc.MvcHandler+ProcessRequestState]:invoke_void_IAsyncResult_TState (System.IAsyncResult,System.Web.Mvc.MvcHandler/ProcessRequestState)
  at System.Web.Mvc.Async.AsyncResultWrapper+WrappedAsyncVoid`1[TState].CallEndDelegate (System.IAsyncResult asyncResult) [0x00000] in <cc73190bab9d435c831510ff295c572a>:0 
  at System.Web.Mvc.Async.AsyncResultWrapper+WrappedAsyncResultBase`1[TResult].End () [0x00029] in <cc73190bab9d435c831510ff295c572a>:0 
  at System.Web.Mvc.Async.AsyncResultWrapper.End[TResult] (System.IAsyncResult asyncResult, System.Object tag) [0x00007] in <cc73190bab9d435c831510ff295c572a>:0 
  at System.Web.Mvc.Async.AsyncResultWrapper.End (System.IAsyncResult asyncResult, System.Object tag) [0x00000] in <cc73190bab9d435c831510ff295c572a>:0 
  at System.Web.Mvc.MvcHandler.EndProcessRequest (System.IAsyncResult asyncResult) [0x00000] in <cc73190bab9d435c831510ff295c572a>:0 
  at System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest (System.IAsyncResult result) [0x00000] in <cc73190bab9d435c831510ff295c572a>:0 
  at System.Web.HttpApplication.async_handler_complete_cb (System.IAsyncResult ar) [0x00015] in /Users/builder/data/lanes/4992/mono-mac-sdk/external/bockbuild/builds/mono-x64/mcs/class/System.Web/System.Web/HttpApplication.cs:988

我了解到这是由于 Views/Web.config 文件错误地引用了 MVC 版本，但它正确指向了 5.2.3.0 版本。还有人遇到这个问题吗？

【问题讨论】：

标签： visual-studio-mac

【解决方案1】：

我找到了问题的答案 - 事实证明这仅仅是由于 URL 中的大写问题 - URL 指向 http://localhost:8080/Account/login 而不是 http://localhost:8080/Account/Login。显然在 PC 上这不是问题，但在基于 linux 的系统大写上是一个问题。就我而言，更改是在 Web.config 中的以下位置进行的：

<system.web>
  <authentication mode="Forms">
    <forms loginUrl="~/Account/Login">

【讨论】：