C# EF核心迁移失败：System.Runtime.Remoting.RemotingException:无法加载类型'；Microsoft.EntityFrameworkCore.Design.IOperationResultHandler

我第一次将Entity Framework核心迁移到我的平均大小项目（大约100个表），现在我正尝试在package manager控制台中使用“Update Database”调用对azure sql db进行更改

我将始终收到此错误： 异常消息： 堆栈跟踪：

System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.Runtime.Remoting.RemotingException: Cannot load type 'Microsoft.EntityFrameworkCore.Design.IOperationResultHandler, Microsoft.EntityFrameworkCore.Design, Version=1.1.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60'.

Server stack trace:
at System.Runtime.Remoting.Messaging.MethodCall.ResolveMethod(Boolean bThrowIfNotResolved)
at System.Runtime.Remoting.Messaging.MethodCall..ctor(SmuggledMethodCallMessage smuggledMsg, ArrayList deserializedArgs)
at System.Runtime.Remoting.Channels.CrossAppDomainSink.DoDispatch(Byte[] reqStmBuff, SmuggledMethodCallMessage smuggledMcm, SmuggledMethodReturnMessage& smuggledMrm)
at System.Runtime.Remoting.Channels.CrossAppDomainSink.DoTransitionDispatchCallback(Object[] args)

Exception rethrown at [0]:
at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
at Microsoft.EntityFrameworkCore.Design.IOperationResultHandler.OnError(String type, String message, String stackTrace)
at Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase.Execute(Action action)
--- End of inner exception stack trace ---
at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor)
at System.Reflection.RuntimeConstructorInfo.Invoke(BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
at System.RuntimeType.CreateInstanceImpl(BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes, StackCrawlMark& stackMark)
at System.Activator.CreateInstance(Type type, BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes)
at System.Activator.CreateInstance(String assemblyString, String typeName, Boolean ignoreCase, BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes, Evidence securityInfo, StackCrawlMark& stackMark)
at System.Activator.CreateInstance(String assemblyName, String typeName, Boolean ignoreCase, BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes)
at System.AppDomain.CreateInstance(String assemblyName, String typeName, Boolean ignoreCase, BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes)
at System.AppDomain.CreateInstance(String assemblyName, String typeName, Boolean ignoreCase, BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes)
at Microsoft.EntityFrameworkCore.Tools.AppDomainOperationExecutor.Execute(String operationName, Object resultHandler, IDictionary arguments)
at System.Dynamic.UpdateDelegates.UpdateAndExecuteVoid4[T0,T1,T2,T3](CallSite site, T0 arg0, T1 arg1, T2 arg2, T3 arg3)
at Microsoft.EntityFrameworkCore.Tools.OperationExecutorBase.InvokeOperationImpl(String operationName, IDictionary arguments)
at Microsoft.EntityFrameworkCore.Tools.OperationExecutorBase.UpdateDatabase(String migration, String contextType)
at Microsoft.EntityFrameworkCore.Tools.Commands.DatabaseUpdateCommand.Execute()
at Microsoft.DotNet.Cli.CommandLine.CommandLineApplication.Execute(String[] args)
at Microsoft.EntityFrameworkCore.Tools.Program.Main(String[] args)
Exception has been thrown by the target of an invocation.

我知道它试图删除此表主键-在此之前有多个类似的调用：

migrationBuilder.DropPrimaryKey(name: "pk_usr", table: "usr");

我的问题的原因可能是什么？谢谢你的帮助

我的参考资料有（全部为1.1.1.0）：

检查是否可以解决您的问题，如果不能，请转至以下选项

您是否正在尝试更新已创建的数据库？如果是,， 您的迁移可能与迁移数据库不同步 快照如果您以前没有使用创建数据库表 迁移和/或添加或删除列或表而不使用 迁移，忘记使用当前迁移并创建新的 数据库

其他一些原因可能是您在一个应用程序中使用实体框架 , ;

另一个原因可能是您在.Net核心运行时使用了一些包 由于可能的更新，当前未被引用，因此请确保 您正在使用引用的包

或者可能是

---

看起来您使用的是Microsoft.EntityFrameworkCore.Tools的不兼容版本。确保已安装1.1.0版。

您是否以某种方式解决了问题？因为我现在面临着同样的问题。

Microsoft.EntityFrameworkCore
Microsoft.EntityFrameworkCore.Design
Microsoft.EntityFrameworkCore.Relational
Microsoft.EntityFrameworkCore.Relational.Design
Microsoft.EntityFrameworkCore.SqlServer
Microsoft.EntityFrameworkCore.SqlServer.Design