EF 6 - Exception Error Calling SetData with Two Arguments

Question

I have a solution with several projects. The file and DBContext models are in the ClassLibrary project. This project has EF 6.1.3 and runs on .NET 4.5.2. Models and DBContext files are in different file structures, I mean the models in Project / Data / Model and DBContext is in the Data folder. Apparently this project is included for an existing database. The development team used only the new database, creating the project. It also has:

AutomaticMigrationsEnabled = true; 

I try to use migration correctly and tried to follow to see how PackageManagerConsole responds correctly.

 Enable-Migrations Add-Migration InitialCreate –IgnoreChanges 

As a result, the following error occurred:

 Exception calling "SetData" with "2" argument(s): "Type 'Microsoft.VisualStudio.ProjectSystem.VS.Implementation.Package.Automation.OAProject' in assembly 'Microsoft.VisualStudio.ProjectSystem.VS.Implementation, Version=14.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' is not marked as serializable." At C:\Users\Temp\.nuget\packages\EntityFramework\6.1.3\tools\EntityFramework.psm1:718 char:5 + $domain.SetData('project', $project) + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : NotSpecified: (:) [], MethodInvocationException + FullyQualifiedErrorId : SerializationException Exception calling "SetData" with "2" argument(s): "Type 'Microsoft.VisualStudio.ProjectSystem.VS.Implementation.Package.Automation.OAProject' in assembly 'Microsoft.VisualStudio.ProjectSystem.VS.Implementation, Version=14.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' is not marked as serializable." At C:\Users\Temp\.nuget\packages\EntityFramework\6.1.3\tools\EntityFramework.psm1:719 char:5 + $domain.SetData('contextProject', $contextProject) + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : NotSpecified: (:) [], MethodInvocationException + FullyQualifiedErrorId : SerializationException Exception calling "SetData" with "2" argument(s): "Type 'Microsoft.VisualStudio.ProjectSystem.VS.Implementation.Package.Automation.OAProject' in assembly 'Microsoft.VisualStudio.ProjectSystem.VS.Implementation, Version=14.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' is not marked as serializable." At C:\Users\Temp\.nuget\packages\EntityFramework\6.1.3\tools\EntityFramework.psm1:720 char:5 + $domain.SetData('startUpProject', $startUpProject) + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : NotSpecified: (:) [], MethodInvocationException + FullyQualifiedErrorId : SerializationException System.NullReferenceException: Object reference not set to an instance of an object. at System.Data.Entity.Migrations.Extensions.ProjectExtensions.GetPropertyValue[T](Project project, String propertyName) at System.Data.Entity.Migrations.MigrationsDomainCommand.GetFacade(String configurationTypeName, Boolean useContextWorkingDirectory) at System.Data.Entity.Migrations.EnableMigrationsCommand.FindContextToEnable(String contextTypeName) at System.Data.Entity.Migrations.EnableMigrationsCommand.<>c__DisplayClass2.<.ctor>b__0() at System.Data.Entity.Migrations.MigrationsDomainCommand.Execute(Action command) Object reference not set to an instance of an object. 

Could you view and tell me what causes the error. I also tried setting up the Startup project for other projects in the solution.

Answer 1

I have the same problem with my class library (.Net Standard). I decided to create a new class library (.Net Framework) and insert my whole entity and model.