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mrahhal / Migrator.EF6

.NET Core CLI tool to enable EF6 migrations in an Asp.Net Core app.
MIT License
82 stars 15 forks source link

Could not load assembly error #58

Closed maganuk closed 6 years ago

maganuk commented 6 years ago

Visual Studio 2017 upgraded to SDK 2.1.101, since then getting the following error whenever I try to run dotnet ef migrations add (Dotnet ef seems to work fine and doesn't throw an error):

Unhandled Exception: System.IO.FileLoadException: Could not load file or assembly 'Microsoft.DotNet.PlatformAbstractions, Version=2.0.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040) at Microsoft.DotNet.Cli.Utils.DefaultCommandResolverPolicy.Create() at Microsoft.DotNet.Cli.Utils.CommandResolver.TryResolveCommandSpec(ICommandResolverPolicy commandResolverPolicy, String commandName, IEnumerable1 args, NuGetFramework framework, String configuration, String outputPath, String applicationName) at Microsoft.DotNet.Cli.Utils.Command.Create(ICommandResolverPolicy commandResolverPolicy, String commandName, IEnumerable1 args, NuGetFramework framework, String configuration, String outputPath, String applicationName) at Microsoft.DotNet.Cli.Utils.Command.CreateDotNet(String commandName, IEnumerable`1 args, NuGetFramework framework, String configuration) at Migrator.EF6.Tools.ProjectReader.ReadProject(Stream stream, String projectName, String projectPath) at Migrator.EF6.Tools.ProjectReader.GetProject(String projectPath) at Migrator.EF6.Tools.Executor..ctor(Boolean verbose, String connectionString, String providerName, String context) at Migrator.EF6.Tools.CommonConfiguration.CreateExecutor() at Migrator.EF6.Tools.MigrationsCommand.<>c__DisplayClass1_2.b__6() at Microsoft.Extensions.CommandLineUtils.CommandLineApplication.Execute(String[] args) at Migrator.EF6.Tools.Program.Main(String[] args)

mrahhal commented 6 years ago

Right now, this tool works under SDK 1.0. You can download ".NET Core SDK 1.1.8" from here: https://www.microsoft.com/net/download/all. Of course, you can also have SDK 2.0 installed.

I should probably mention this somewhere in the README. I was planing to update it, but faced some related problems.

maganuk commented 6 years ago

Actually I had 1.1.8 installed, and my solution was working fine till yesterday. I just realized that I changed one of the referenced projects to netstandard2.0 and upgraded the Microsoft.AspNetCore.Mvc.DataAnnotations package to 2.0.3 from 2.0.0. Further, in my migrations project which targets net47, I updated Microsoft.AspNetCore.Hosting.Abstractions to 2.0.2 from 2.0.1. If I revert the Data Annotations and the hosting abstractions packages to the original, it works fine. Without changing the SDK (which is currently at 2.1.101).