When I'm trying to add a migration using EF Core (7.0.0-rc.1.22426.7) I'm greeted with the following error in the console:
System.TypeLoadException: Method 'Fragment' in type 'Microsoft.EntityFrameworkCore.Design.Internal.CSharpHelper' from assembly 'Microsoft.EntityFrameworkCore.Design, Version=6.0.8.0, Culture=neutral, PublicKeyToken=adb9793829ddae60' does not have an implementation.
at Microsoft.EntityFrameworkCore.Design.DesignTimeServiceCollectionExtensions.<>c__DisplayClass0_0.<AddEntityFrameworkDesignTimeServices>b__0(ServiceCollectionMap services)
at Microsoft.EntityFrameworkCore.Infrastructure.EntityFrameworkServicesBuilder.TryAddProviderSpecificServices(Action`1 serviceMap)
at Microsoft.EntityFrameworkCore.Design.DesignTimeServiceCollectionExtensions.AddEntityFrameworkDesignTimeServices(IServiceCollection services, IOperationReporter reporter, Func`1 applicationServiceProviderAccessor)
at Microsoft.EntityFrameworkCore.Design.Internal.DesignTimeServicesBuilder.CreateServiceCollection(DbContext context)
at Microsoft.EntityFrameworkCore.Design.Internal.DesignTimeServicesBuilder.Build(DbContext context)
at Microsoft.EntityFrameworkCore.Design.Internal.MigrationsOperations.AddMigration(String name, String outputDir, String contextType, String namespace)
at Microsoft.EntityFrameworkCore.Design.OperationExecutor.AddMigrationImpl(String name, String outputDir, String contextType, String namespace)
at Microsoft.EntityFrameworkCore.Design.OperationExecutor.AddMigration.<>c__DisplayClass0_0.<.ctor>b__0()
at Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase.<>c__DisplayClass3_0`1.<Execute>b__0()
at Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase.Execute(Action action)
Method 'Fragment' in type 'Microsoft.EntityFrameworkCore.Design.Internal.CSharpHelper' from assembly 'Microsoft.EntityFrameworkCore.Design, Version=6.0.8.0, Culture=neutral, PublicKeyToken=adb9793829ddae60' does not have an implementation.
Has anyone encountered this before and know what to do about it? Migrations worked up until today and I don't think I've been adding very exotic things to my code base. Any pointers in the right direction are helpful since Google didn't really clarify anything yet...
Installing Microsoft.EntityFrameworkCore.Design solved the problem for me
First time I tried I received that message also. There was another warning "The Entity Framework tools version '6.0.13' is older than that of the runtime '7.0.2'. Update the tools for the latest features and bug fixes."
So I updated the Microsoft.EntityFrameworkCore.Tools to 7.0.2 to be the same as Microsoft.EntityFrameworkCore.SqlServer and that fixed it
Related
Hi I trying Ardalis Clean Architecture.
Running VS 2022 and dotnet 6.
I am trying to scaffold a class and get the following error in the code generator phase:
"Scaffolding failed.
SDK Resolver Failure: "The NuGet-based SDK resolver failed to run because NuGet assemblies could not be located. Check your installation of MSBuild or set the environment variable "MSBUILD_NUGET_PATH" to the folder that contains the required NuGet assemblies. System.IO.FileLoadException: Could not load file or assembly 'NuGet.Versioning, Version=6.0.0.278, Culture=neutral, PublicKeyToken=31bf3856ad364e35'. Could not find or load a specific file. (0x80131621)To see more information, enable tracing by setting environment variable 'codegen_trace' = 1.
File name: 'NuGet.Versioning, Version=6.0.0.278, Culture=neutral, PublicKeyToken=31bf3856ad364e35'
---> System.IO.FileLoadException: Could not load file or assembly 'NuGet.Versioning, Version=6.0.0.280, Culture=neutral, PublicKeyToken=31bf3856ad364e35'.
at System.Runtime.Loader.AssemblyLoadContext.LoadFromPath(IntPtr ptrNativeAssemblyLoadContext, String ilPath, String niPath, ObjectHandleOnStack retAssembly)
at System.Runtime.Loader.AssemblyLoadContext.LoadFromAssemblyPath(String assemblyPath)
at Microsoft.Build.Shared.MSBuildLoadContext.Load(AssemblyName assemblyName)
at System.Runtime.Loader.AssemblyLoadContext.ResolveUsingLoad(AssemblyName assemblyName)
at System.Runtime.Loader.AssemblyLoadContext.Resolve(IntPtr gchManagedAssemblyLoadContext, AssemblyName assemblyName)
at Microsoft.Build.NuGetSdkResolver.NuGetSdkResolver.NuGetAbstraction.TryParseNuGetVersion(String version, Object& parsed)
at Microsoft.Build.NuGetSdkResolver.NuGetSdkResolver.TryGetNuGetVersionForSdk(String id, String version, SdkResolverContext context, Object& parsedVersion)
at Microsoft.Build.NuGetSdkResolver.NuGetSdkResolver.Resolve(SdkReference sdkReference, SdkResolverContext resolverContext, SdkResultFactory factory)
at Microsoft.Build.BackEnd.SdkResolution.SdkResolverService.ResolveSdk(Int32 submissionId, SdkReference sdk, LoggingContext loggingContext, ElementLocation sdkReferenceLocation, String solutionPath, String projectPath, Boolean interactive, Boolean isRunningInVisualStudio)" C:\Workspace\VSProjects\CleanArchitecture\xxx..."
Any one have a clue what is missing?
One or more errors occurred while processing template 'Entity.tt'.
error : An exception was thrown while trying to compile the
transformation code. The following Exception was thrown:
System.ArgumentException: Empty path name is not legal.
Anyone know what might be going on?
I created a new class project in VS 2015. Added the nuget for <package id="EntityFramework" version="6.1.3" targetFramework="net452" />. Downloaded the VSIX file for the EF Tools and installed them. Then I shut everything down, restarted and went to the Entity Framework tools for the project and selected Reverse Engineer. It started going through the process of scanning the database then just stopped with this error.
I've tried running as admin, running as a normal user, rebooting the machine and nothing seems to have worked (yet).
Any suggestions?
Full Stack Trace:
One or more errors occurred while processing template 'Entity.tt'.
error : An exception was thrown while trying to compile the transformation code. The following Exception was thrown:
System.ArgumentException: Empty path name is not legal.
at System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy, Boolean useLongPath, Boolean checkHost)
at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share)
at System.IO.File.OpenRead(String path)
at Roslyn.Utilities.FileUtilities.OpenFileStream(String path)
at Microsoft.CodeAnalysis.MetadataReference.CreateFromFile(String path, MetadataReferenceProperties properties, DocumentationProvider documentation)
at Microsoft.VisualStudio.TextTemplating.CompilerBridge.<>c.<.ctor>b__15_0(String x)
at System.Linq.Enumerable.WhereSelectListIterator`2.MoveNext()
at System.Linq.Enumerable.<UnionIterator>d__66`1.MoveNext()
at System.Linq.Enumerable.<UnionIterator>d__66`1.MoveNext()
at System.Linq.Buffer`1..ctor(IEnumerable`1 source)
at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source)
at System.Collections.Immutable.ImmutableArray.CreateRange[T](IEnumerable`1 items)
at Microsoft.CodeAnalysis.ImmutableArrayExtensions.AsImmutableOrEmpty[T](IEnumerable`1 items)
at Microsoft.CodeAnalysis.Compilation.ValidateReferences[T](IEnumerable`1 references)
at Microsoft.CodeAnalysis.CSharp.CSharpCompilation.WithReferences(IEnumerable`1 references)
at Microsoft.CodeAnalysis.CSharp.CSharpCompilation.CommonWithReferences(IEnumerable`1 newReferences)
at Microsoft.VisualStudio.TextTemplating.CompilerBridge.PrepareNewCompilation()
at Microsoft.VisualStudio.TextTemplating.CompilerBridge.Compile()
at Microsoft.VisualStudio.TextTemplating.TransformationRunner.Compile(String source, String inputFile, IEnumerable`1 references, Boolean debug, SupportedLanguage language, String compilerOptions)
You should just the official EF Tools, that are included with VS 2015, and use the "Code First from Database" feature in the "Add EDM" wizard, or use the EF Reverse POCO template - EF Power Tools reverse engineeer does not work with VS 2015 and is not supported.
The EF Power Tools Beta do work in VS2015: Installing EF Power Tools into VS2015
The problem is an update in the .NET framework. Version 4.5.1 will work. Version 4.5.2 and later had a breaking change for the power tools. Easiest solution is to dial your project back to the 4.5.1 framework, reverse engineer the database, dial your version back to where you need/want it.
Hello i was following the tutorial on https://blogs.windows.com/buildingapps/2016/05/03/data-access-in-universal-windows-platform-uwp-apps/
but i've got issue while migrating my db.
I tried to search in google, but the only solution i found was to upgrade EF, but i've got all up to date.
Error:
PM> Add-Migration MyFirstMigration
System.MissingMethodException: Method not found: 'Void Microsoft.Extensions.Logging.LoggerExtensions.LogVerbose(Microsoft.Extensions.Logging.ILogger, System.String)'.
at Microsoft.Data.Entity.Design.DbContextOperations.CreateContext(String contextType)
at Microsoft.Data.Entity.Design.MigrationsOperations.AddMigration(String name, String outputDir, String contextType)
at Microsoft.Data.Entity.Design.OperationExecutor.d__7.MoveNext()
at System.Linq.Buffer1..ctor(IEnumerable1 source)
at System.Linq.Enumerable.ToArray[TSource](IEnumerable1 source)
at Microsoft.Data.Entity.Design.OperationExecutor.OperationBase.<>c__DisplayClass4_01.b__0()
at Microsoft.Data.Entity.Design.OperationExecutor.OperationBase.Execute(Action action)
Method not found: 'Void Microsoft.Extensions.Logging.LoggerExtensions.LogVerbose(Microsoft.Extensions.Logging.ILogger, System.String)'.
What should i do now?
You probably have done something wrong alone the way. I've copied over your model and DbContext and followed the official docs, which drills down to following commands:
Install-Package Microsoft.EntityFrameworkCore.SQLite –Pre
Install-Package Microsoft.EntityFrameworkCore.Tools –Pre
Add-Migration MyFirstMigration
I've uploaded my working sample to GitHub.
Problem: Can't properly setup LINQPad connection to my Entity Framework dll.
I downloaded LINQPad (v4.42.01)
I started to create a new connection using the Entity Framework DbContext POCO driver
At the setup dialog I pointed to my C# project's dll and it found the appropriate DbContext class.
Next I pointed the config file to the app.config of my C# project
When I hit the Test Button I get this error:
Error: The type initializer for
'System.Data.Entity.Internal.AppConfig' thre an exception. An error
occurred creating the configuration section handler for
entityFramework: Could not load file or assembly 'EntityFramework,
Version=4.3.1.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' on
one of its dependencies. The system cannot find the file specified.
(C:\Code\NET\FTI_Opp_Model\App.Config line 5)
So I tried doing what #Sorax did in this related question and moved my EntityFramework.dll from the one I got from NuGet in my project into the LINQPad.exe folder. This got me a little further along and the Test now worked. I was encouraged because my connection in the LINQPad panel showed all my entities underneath it.
But when I right click on my Borrower entity and chose "Borrower.Take(100)" I received this error from LINQPad:
The type initializer for 'System.Data.Entity.Internal.AppConfig' threw an exception.
With an inner exception message:
[A]System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection cannot be cast to
[B]System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection. Type
A originates from 'EntityFramework, Version=4.3.1.0, Culture=neutral,
PublicKeyToken=b77a5c561934e089' in the context 'Default' at location
'C:\MarkSisson\LinqPad\EntityFramework.dll'. Type B originates from
'EntityFramework, Version=4.3.1.0, Culture=neutral,
PublicKeyToken=b77a5c561934e089' in the context 'LoadFrom' at location
'C:\Users\msisson\AppData\Local\Temp\LINQPad\vlnebssu\shadow_ujjvzp\EntityFramework.dll'.
Any ideas?
Download the latest beta - this problem was fixed in 4.42.05.
Btw the important thing to understand that the type of the assembly also include WHERE IT WAS LOADED.
meaning two same assemblies loaded from different location are not the same type!
We updating to Autofac 2.4.4 after moving up to MVC3 and are receiving an exception when we include EnableInterfaceInterceptors on our registration. The exception does not appear until DependencyResolver.Current.GetService<ISite>() is called.
Exception:
Could not load type 'System.Func`2' from assembly 'App.AutofacContrib.DynamicProxy2, Version=2.4.4.705, Culture=neutral, PublicKeyToken=null'.
Registration:
builder.RegisterType<SendEmailTask>().As<ITask>().InstancePerDependency().EnableInterfaceInterceptors();
Note: In order to deal with conflicts in the different versions of Castle we performed an ILMerge on AutofacContrib.DynamicProxy2.dll and Castle.Core.dll.
Looks like a problem with the IL merge - rather than merging, have you tried assembly binding redirects?