System.IO.FileNotFoundException .NetCore 1.1

Question

我是新来的.NetCore，目前正在使用几天前发布的Asp.NetCore 1.1构建Webapi应用程序。我引用了几个类库，它是在.net 4.5.2中开发的。

当我运行应用程序时，当我调用控制器时出现错误。请帮忙解决这个问题。

System.IO.FileNotFoundException：未能加载文件或程序 ”，版本= 1.0.0.0，文化=中性 公钥= 22b71681a01d2a47' 。系统找不到指定的文件 。文件名：”，版本= 1.0.0.0，文化=中立， 公钥= 22b71681a01d2a47' 在 System.Signature.GetSignature（void *的pCorSig，的Int32 cCorSig， RuntimeFieldHandleInternal fieldHandle，IRuntimeMethodInfo methodHandle，RuntimeType declaringType）在 系统。 Signature..ctor（IRuntimeMethodInfo methodHandle，RuntimeType declaringType）处 System.Reflection.RuntimeConstructorInfo.GetParametersNoCopy（） System.Reflection.RuntimeConstructorInfo.get_Signature（）处 Microsoft.Extensions System.Reflection.RuntimeConstructorInfo.GetParameters（） .Internal.ActivatorUtilities.FindApplicableConstructor（类型 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 键，Func键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

当你建立你有一些所谓的.net standard一个* .NET的核心应用。这个.NET标准是所有.NET平台必须实现的一组API。这将统一.NET平台并防止未来的碎片化。

根据此表：

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

如果任何此标准的作品尝试将您的dll的目标版本更改为.NET Framework 4.5.1或.NET Framework 4.6。

有关于一个有用的链接什么是NET标准：https://blogs.msdn.microsoft.com/dotnet/2016/09/26/introducing-net-standard/