'System.MissingMethodException' occurred in System.Private.CoreLib.ni

.net .net-core c# entity-framework entity-framework-core

Question

I am working on a project (Visual Studio 2015 update 3) where I am using Entity framework core with MySQL. I am able to write to data to my database, but when trying to query data using DbSet<T>.Find(...) or FirstOrDefault I get this exception:

An exception of type 'System.MissingMethodException' occurred in System.Private.CoreLib.ni.dll but was not handled in user code

Additional information: Method not found: 'Void Microsoft.EntityFrameworkCore.Query.QueryContextFactory..ctor(Microsoft.EntityFrameworkCore.ChangeTracking.Internal.IStateManager, Microsoft.EntityFrameworkCore.Internal.IConcurrencyDetector, Microsoft.EntityFrameworkCore.ChangeTracking.Internal.IChangeDetector)'

I tried to update all the packages from NuGet packages manager, with no success. This question may apear like semi duplicate, but it is NOT, no solution worked for me. Any ideas? Thanks in advance!

1
0
2/26/2017 5:18:08 PM

Fastest Entity Framework Extensions

Bulk Insert
Bulk Delete
Bulk Update
Bulk Merge

Popular Answer

OK it seems to be a bug in MySQL -> entity framework adapter MySql.Data.EntityFrameworkCore. I downgraded from 7.0.6-IR31 to 6.10.1-beta and everything works fine now!

1
2/26/2017 7:07:07 PM

Related Questions

Unable to cast Anonymous Type from 'System.Linq.IQueryable' to 'System.Data.Entity.Core.Objects.ObjectQuery'

The following query was working well with EF5 but gives me error with EF6. I use DbContext and CodeFirst....Error raised with EF6:...Unable to cast the type 'System.Linq.IQueryable...1[[<>f__AnonymousType5...4[[System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.Int32, mscorlib, Version=4.0.0.0, Cultur...
c# entity-framework entity-framework-6 linq linq-to-entities
asked by Dan

Method not found: 'Void System.Data.Entity.DbModelBuilder.RegisterEntityType(System.Type)'

I'm using EntityFramework but in some cases I get this Exception:...threw an exception.", inner exception: "Method not found: 'Void System.Data.Entity.DbModelBuilder.RegisterEntityType(System.Type)'. ...Why is this exception is happening?...As I found out, this exception is happening when system expected to have EF 6.1.3, but the referenced EF is 6...
c# entity-framework entity-framework-6
asked by mehrandvd

System.InvalidCastException occurred in EntityFramework.Core.dll

The below is the the ...Application Entity...:...public class Application { [Key] [Column(TypeName = "integer")] public int ApplicationID { get; set; } [Required] [Column(TypeName = "nvarchar(50)")] public string ApplicationName { get; set; } [Column(TypeName = "nvarchar(150)")] public string Description { get; set...
asp.net-core entity-framework-core linq-to-entities
asked by Bala Sakthis

Unable to cast object of type 'System.Linq.Expressions.FieldExpression' to type 'System.Linq.Expressions.ParameterExpression

I am using ...Entity Framework rc1-final... in ...ASP.NET5....I have the following table....public class PlayerComment { [Key] public int Id { get; set; } public int? PeriodId { get; set; } [ForeignKey("PeriodId")] public Period Period { get; set; } public int? PlayerId { get; set; } [ForeignKey("PlayerId")] publ...
entity-framework entity-framework-core linq
asked by dfmetro

Entityframework Core Unable to cast object of type 'System.Int32' to type 'System.Int64'

It was my mistake.. When I first created the table, productNo was bigint and I created the model based on that table. After that somehow (it must be me...) productNo changed to int. It is working just fine after changing productNo back to bigint
c# entity-framework-core sql-server
asked by jong shin

Why is Visual Studio telling me I need to reference System.Private.CoreLib?

Had a similar problem in VS Code (vscode) with SAFE-Stack's server template code. The issue appears resolved by adding ...<Reference include="netstandard" />... to the associated ...fsproj... project file ...sugggested on github here... as follows:...<Project Sdk="Microsoft.NET.Sdk.Web"> .. <ItemGroup> .. <Reference include="netstandard...
asp.net-core asp.net-core-mvc entity-framework-core visual-studio
asked by George

Unable to cast object of type 'System.Linq.Expressions.MethodCallExpression' to type 'System.Linq.Expressions.LambdaExpression'

I am using EntityFramework and having trouble with the above error. When I invoke ...var documents = docRepository.GetAllSavedDocuments(); var withRatings = documentFilter.GetDocumentsWithRating(documents, 1); ...I get the error in the title....My code is split across a few classes...public class DocRepository { public IQueryable<Document> GetA...
c# entity-framework entity-framework-6 linq sql
asked by bookshopkeeper

System.Private.CoreLib: Exception while executing function: System.Data.SqlClient: Keyword not supported: 'authentication'

I am writing a function to log information from every file uploaded to a blob storage account using entity framework core. When I try to connect to the azure sql db, I get the following error: ...System.Private.CoreLib: Exception while executing function: BlobStorageLogging. System.Data.SqlClient: Keyword not supported: 'authentication'...I copied ...
.net-core azure azure-functions azure-sql-database entity-framework-core
asked by Bishop

Entity Framework Core DbContext.SaveChanges throws System.InvalidCastException: Unable to cast object of type System.Boolean to type System.Int16

try belove code:...[Required] [Column(TypeName = "BIT")] public bool IsDelete { get; set; }
c# entity-framework-core exception mysql
asked by bdangvnt

System.PlatformNotSupportedException: System.Data.SqlClient is not supported on this platform

I want to call a .netstandard2.0 library from a framework 4.7.2 library....I set up some test projects to check whether this would work....The test passes using a .Net Core 2.1 test project but fails with a framework 4.7.2 test project....The call stack is...Test method UnitTestProject3.UnitTest1.TestMethod1 threw exception: System.PlatformNotSupp...
.net-core .net-standard entity-framework-core
asked by Kirsten Greed

Fastest Entity Framework Extensions

Bulk Insert
Bulk Delete
Bulk Update
Bulk Merge
View more on Stack Overflow

Prime Library

Performance

Expression Evaluator

More Projects...

Related

Licensed under: CC-BY-SA with attribution
Not affiliated with Stack Overflow
Licensed under: CC-BY-SA with attribution
Not affiliated with Stack Overflow