System.IO.FileNotFoundException .NetCore 1.1

Question

我是新來的.NetCore，目前正在使用幾天前發佈的Asp.NetCore 1.1構建Webapi應用程序。我引用了幾個類庫，它是在.net 4.5.2中開發的。

當我運行應用程序時，當我調用控制器時出現錯誤。請幫忙解決這個問題。

System.IO.FileNotFoundException：未能加載文件或程序 」，版本= 1.0.0.0，文化=中性 公鑰= 22b71681a01d2a47' 。系統找不到指定的文件 。文件名：」，版本= 1.0.0.0，文化=中立， 公鑰= 22b71681a01d2a47' 在 System.Signature.GetSignature（void *的pCorSig，的Int32 cCorSig， RuntimeFieldHandleInternal fieldHandle，IRuntimeMethodInfo methodHandle，RuntimeType declaringType）在 系統。 Signature..ctor（IRuntimeMethodInfo methodHandle，RuntimeType declaringType）處 System.Reflection.RuntimeConstructorInfo.GetParametersNoCopy（） System.Reflection.RuntimeConstructorInfo.get_Signature（）處 Microsoft.Extensions System.Reflection.RuntimeConstructorInfo.GetParameters（） .Internal.ActivatorUtilities.FindApplicableConstructor（類型 instanceType，Type [] argumentTypes，ConstructorIn FO & matchingConstructor，可空1[]& parameterMap) at Microsoft.Extensions.Internal.ActivatorUtilities.CreateFactory(Type instanceType, Type[] argumentTypes) at Microsoft.Extensions.DependencyInjection.ActivatorUtilities.CreateFactory(Type instanceType, Type[] argumentTypes) at System.Collections.Concurrent.ConcurrentDictionary 2.GetOrAdd（TKEY的 鍵，Func鍵2 valueFactory) at Microsoft.AspNetCore.Mvc.Internal.TypeActivatorCache.CreateInstance[TInstance](IServiceProvider serviceProvider, Type implementationType) at Microsoft.AspNetCore.Mvc.Controllers.DefaultControllerFactory.CreateController(ControllerContext context) at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted) at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.<InvokeNextResourceFilter>d__22.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.Rethrow(ResourceExecutedContext context) at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted) at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.<InvokeAsync>d__20.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.AspNetCore.Builder.RouterMiddleware.<Invoke>d__4.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.AspNetCore.Hosting.Internal.RequestServicesContainerMiddleware.<Invoke>d__3.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.AspNetCore.Server.Kestrel.Internal.Http.Frame 1.d__2.MoveNext（）

Answer 1

當你建立你有一些所謂的.net standard一個* .NET的核心應用。這個.NET標準是所有.NET平臺必須實現的一組API。這將統一.NET平臺並防止未來的碎片化。

根據此表：

在.NET Framework 4.5.2應與.NET Standard 1.2或.NET Standard 1.3兼容。

如果任何此標準的作品嚐試將您的dll的目標版本更改爲.NET Framework 4.5.1或.NET Framework 4.6。

有關於一個有用的鏈接什麼是NET標準：https://blogs.msdn.microsoft.com/dotnet/2016/09/26/introducing-net-standard/