I am working on a system which scaffolds a migration from inside our code using ToolingFacade.
The system worked fine in entity framework 4.3.1. After the Upgrade to 5.0 I see that the correct entity framework version is loaded when starting out tool, however when I call the scaffold method I get the following exception:
Could not load type 'System.Data.Entity.Migrations.Design.ToolingFacade+ScaffoldRunner'
from assembly 'EntityFramework, Version=4.1.0.0, Culture=neutral,
PublicKeyToken=b77a5c561934e089'.
Does anyone know why calling a method in entity framework 5.0 requires an older version dll?
I ran into this issue recently when using EF6. Visual Studio required me to re-install EntityFramework via the Package Manage console to get things working again. Note that when I did so, the console output suggested that it had no idea that EF was installed before; somehow the association had been lost. Perhaps this is why the tooling assembly or assemblies weren't being loaded.
In any case, reinstalling the package via the console (and a restart of Visual Studio) solved the problem for me.
Related
I am using VS2012 and trying to run a code I have received from a colleague (who happens to use VS2013). He is using EF (v 6.1.3) Code-First New Database approach.
Now I am trying to enable the migrations to create the database, but Package Manager Console is unable to identify Enable-Migrations code.
Below is the error I receive (please click the image to enlarge)
I have installed EF Tools for VS2012, but that does't resolve the issue. Even Microsoft tells that it can only resolve EF Code-First Existing Database problems.
I don't know if I have to rollback Microsoft.NETCore.Platforms v1.1.0 to a previous version.
Any help on this is appreciated.
Edit
Error tells that I need a newer Nuget version, but VS2012 doesn't support Nuget v2.12
I get the following error trying to add a new entity model. Any ideas on how to troubleshoot or fix this?
An error occurred loading the entity data model tools package. failed
to load entity data model tools package. the result is -2147024894
Visual Studio 2015 Update 1
v14.0.24720.00
Entity Framework Nuget Package
v6.1.3
Microsoft .net 4.6.0
UPDATE
I tried installing this, it worked once and then after rebooting a couple days later no longer fixed the issue. It's back:
I was able to fix this by downloading the entity framework 6.x t4 templates and installing them from this: https://visualstudiogallery.msdn.microsoft.com/18a7db90-6705-4d19-9dd1-0a6c23d0751f?SRC=VSIDE
I was able to get around this error by changing the framework from version 4.x to 4.5 on my project and then restarting visual studio. It took some tinkering but it appears this occurs because the Visual Studio 2015 Entity Model Package wizard is dependent on something in the 4.5 framework.
I am using VS2010 with SP1 (also have VS2012 installed on the same machine). Moles 1.0
The project is using .NET 4
I added moles assembly to system.dll and get the following error on compile
Error 46 The type or namespace name 'IReadOnlyList' does not exist in the namespace 'System.Collections.Generic' (are you missing an assembly reference?) [C:\Test\obj\Debug\Moles\s\m.g.csproj] C:\Test\m.g.cs Test
IReadOnlyList .NET 4.5 as far as I know.
Anyone else got this issue?
Updated Solution
I was able to get Pex to run in VS 2010 with .Net Framework 4.5 installed. Maybe others have explained that this is the solution but my issue (being new to Moles and Pex) is that many of the explanations were vague. Thanks to the author of these posts because they got me headed in the right direction:
http://feherzsolt.wordpress.com/2013/02/13/moles-and-net-4-5/
http://www.daedtech.com/using-moles-with-the-system-assembly
So the solution is to create a new .moles file (System.moles) in the test project at the same level that Pex created the yourAssemblyUnderTest.moles file and add the following to the file.
<Moles xmlns="http://schemas.microsoft.com/moles/2010/">
<Assembly Name="System" ReflectionOnly="true" />
</Moles>
You may have to clean (or manually delete the obj folder contents) and rebuild but this solution worked for me. I also noticed that the first build would report build errors, but the errors would go away on subsequent builds.
Alternative Solution
I know this isn't THE solution but it is a (poor) workaround that allows Pex to run...plus this was too long for a comment. If anyone knows how to get PEX to run on a machine with the 4.5 .Net Framework PLEASE respond.
This was my scenario. I have a machine with the .Net Framework 4.5 and I have Visual Studio 2010 and 2012 installed. I installed Pex (en_visual_studio_2010_pex_0.94.51023.0_power_tools_x64_598803.exe) and could run Pex in a VS 2010 project that was targeting .Net Framework 4.0. I could run Pex and it identified issues...but once I promoted issues to Unit Tests the unit test project wouldn't compile because of the following build error
The type or namespace name 'IReadOnlyList' does not exist in the namespace 'System.Collections.Generic' (are you missing an assembly reference?)
After much searching, and reading that Pex or Moles was replacing 4.5 .Net Framework assemblies with 4.0 versions I decided to uninstall 4.5, install 4.0, and give it a try. Running on 4.0 works just fine and I didn't need to define Mole type filters to get it to work. Then I tried tried to upgrade to the 4.5 Framework again...but sadly I end up right back where I started with the IReadOnlyList namespace issue.
I need to know if it is possible to start using the latest version of EF (4.3.1) with VS 2011 without having to install these CTP components as stated here.
I had these components installed but I removed them and since then I can't add a new edmx file to .net 4 targeted project; it complains about missing reference to System.Data.Entity.
Do I need to re install VS 2011?
After I removed and reinstalled Visual Studio, I still couldn't get red of the error, so I used process monitor to log what Visual Studio is doing with System.Data.Entity as a path filter, turned out that Visual Studio was reading from
C:\Windows\Microsoft.NET\assembly\GAC_MSIL\policy.4.0.system.data.entity v4.0_0.0.0.0__b77a5c561934e089\policy.4.0.system.data.entity.config
which had binding to the
System.Data.Entity.dll v 4.2.0.0
once I cleared the file VS was worked like charm.
The CTP uninstall left this out.
Yeah should work with no issues using .net 4, however theres a list of known issues when using .net 4.5. You dont need to re-install vs to get version 4.3.1 of entity framework, simply install it from the nuget package gallery and if you are using .net 4 it all seems to just work.
Issues listed when installing EF4.3.1 on .net 4.5 include those listed below.
Known Issues with Entity Framework 4.x and .NET Framework 4.5
Entity Framework 4.1 thru 4.3 included additional data annotations in the
System.ComponentModel.DataAnnotations namespace in the EntityFramework assembly.
In .NET 4.5 these annotations were moved to be part of the .NET Framework in the
System.ComponentModel.DataAnnotations.Schema namespace of the
System.ComponentModel.DataAnnotations.dll assembly. If you are using EF 4.x and targeting
.NET 4.5 this results in two data annotations with the same name in different assemblies.
Because the annotations in the .NET Framework are in a different namespace we were not
able to use type forwarding to avoid this conflict.
It is possible to use EF 4.x on .NET 4.5 but we recommend using the latest pre-release
version of EF 5. If you are not using the affected data annotations there is no impact
on your code. If you are using the data annotations in a C# project you can use the extern
modifier to ensure your code uses the annotations from EntityFramework.dll
(http://msdn.microsoft.com/en-us/library/e59b22c5(v=VS.80).aspx). If you use the new
annotations from the System.ComponentModel.DataAnnotations.dll assembly in .NET 4.5
they will not be processed by Code First.
The affected annotations are:
Column
ComplexType
DatabaseGenerated
DatabaseGeneratedOption
ForeignKey
InverseProperty
MaxLength
MinLength
NotMapped
Table
I'm building an ASP.net application using Visual Studio Web Developer 2010 Express and have followed the Nerd Dinner tutorial for a large part. The problem is that when I try to build, it is constantly giving me a build error saying:
Error 43 Could not load file or
assembly 'System.Data.Entity,
Culture=neutral,
PublicKeyToken=31bf3856ad364e35' or
one of its dependencies. The system
cannot find the file specified.
This error is coming from the file "ASPNETCOMPILER" apparently. Some things that I have already checked are:
There is a reference to System.Data.Entity in the project references already.
I have .Net 4.0 installed on the system.
Any ideas on what could be wrong?
Try copying the System.Data.Entity.dll into your bin folder, or target your system to use .NET 2.0, as that should copy it over automatically.
Posting back for community goodness, the first comment in this thread by "DonSleza4e" seemed to solve my problem.