I want to add Entity Framework to my project but for some reason the Item is missing. What do I do wrong? I´ve done this lika a 100 times before.
(I´ve tried by downloaded the nuget package, restarted my computer, created a new project and searched google.)
Try to go to Package Manager console and type:
install-package EntityFramework
Related
I have a problem with creating migration for Entity Framework 6 in code first approach. I already created migration, but later when I tried to create new, this was the errror:
Your target project 'Blog' doesn't reference EntityFramework. This
package is required for the Entity Framework Core Tools to work.
Ensure your target project is correct, install the package, and try
again.
I checked NuGet, EF6 is installed, alongside with these packages
When trying to add a migration add-migration "Inicial" -Verbose , this error message appears:
No migrations configuration type was found in the assembly 'DevIO.UI.Site'. (In Visual Studio you can use the Enable-Migrations command from Package Manager Console to add a migrations configuration).
I followed the message instruction and typed the command Enable-Migrations, but there was still an error
No context type was found in the assembly 'DevIO.UI.Site'
What can I do?
Assuming you already have a DbContext class in your solution, you need to know which project it is in. You should be adding migrations in that project. If you're using the Visual Studio package manager console for this, you will need to set the Default Project to the project which contains the DbContext (i.e. in the dropdown at the top of package manager console).
Entity Framework is different from Entity Framework Core. You are using Entity Framework (which we know because EF Core doesn't include an Enable-Migrations command), but your DbContext is coming from the Microsoft.EntityFrameworkCore namespace. If you replace using Microsoft.EntityFrameworkCore with using System.Data.Entity that should be the correct DbContext class for Entity Framework.
I figured that if you install a NuGet packages named Microsoft.EntityFrameworkCore.Tools it will solve this problem .
everyone,
I downloaded the template with the following features
Abp 5.0.0.0
Asp.Net MVC 5.x
Web application with server rendered HTML; ASP.NET MVC & jQuery
Entity Framework
VS2017 Community as Development Environment
The problem lies in the Entity Framework or the version of Nuget
Running the Update-Database command from the Nuget console always returns the same error
Update-Database not recognized cmdlet
My Nuget Version is 4.9.3.5777
I tried both to clear nuget cache, restore solution packages, restart vs2017 and computer (Windows 7 Enterprise 64) without success
There is some issue on download packages?
There is some issue on download packages?
I think this issue stands that the EF package is not installed successfully in your current project.
1.Please check if you have yellow warnings in Solution Explorer like this issue. If there's any warning, resolve it or share it here and I'll check it for you.
2.I know you've cleaned the nuget cache, but see this, there's one copy of the EF package locates in your Solution folder's packages folder when you're in project that uses Packages.config format. So though you've cleaned the nuget cache in %userprofile%\.nuget\packages, your project is still using the old copy in solutionDirectory\packages folder.
Suggestion(The order is important, please follow the steps one by one):
#1 For this, you should right-click your project=>Manage Nuget Packages(UI)=>Uninstall the EntityFramework package.(Or manually delete the EF package folder within SolutionDir\packages folder)
#2 Then clean the nuget cache by Tools=>Nuget Package Manager=>Package Manager Settings=>Clear All Nuget Cache.
#3 Close Package Manager Console if it's open. => Close VS instance.
#4 Then restart VS and reinstall that EF package by package manager UI. And manually open the Package Manager Console and type Update-Database to check if this issue goes away.
Hope it helps:)
After having updated a project using Nuget to Entity 6.1.3., this project keeps adding a package for Entity 5.0.0. when Getting latest of that project or when building it.
I already looked with low-level search (fileseek) but can't find any reference anymore in that project to EF5.
Already uninstalled the Entity package and reinstalled, but same result.
What else can I do to compeltely remove any reference to EF5 ?
Problem is solved in the meantime : there was an unloaded! project in which the packages.config still referenced the 5.0.0 framework. I didn't know that an unloaded project was still held into account when building.
I would like to upgrade from EF4 to 6 and I'm looking for easiest way to update references.
Right now, references are not from NuGet but from custom location. My sln is quite big and its contain a lot of projects which have EF model.
Question is,
do I need run
Install-Package EntityFramework
for each project inside sln manually? It would be nice to have possibility to run this command for all project with EF at once.
Thank you.
From the command line you can run something like the following:
Update-package -Id Entityframework -ProjectName xxx
However on solution level I always find it quite easier to do it using UI:
Manage NuGet Packages
Search for EntityFramework
Install it on one of your projects
Go to Installed Packages + Manage
Tick all the projects you want to have the EF reference