The term 'Add-migration' is not recognized - VS2017 and EntityFrameworkCore

entity-framework-core visual-studio-2017
Ask picture Ask · Feb 22, 2017 · Viewed 28.3k times · Source

I am posting this question just in case the solution I found would help someone else out. While working in Visual Studio 2017 rc4 each time I tried to run the Add-Migration command in the Package Manager console I get the following error:

The term 'Add-migration' is not recognized...

Answer

Ask picture Ask · Feb 22, 2017

The solution that worked for me after trying a whole raft of other solutions posted, was to:

  • right click on my project
  • select Manage Nuget Packages
  • select the browse tab
  • thick Include prerelease check box
  • install the Microsoft.EntityFrameworkCore.Tools

N.b that aspnetcore project in visual studio 2017 do not seem to have the project.json file.

Related questions

ef core don´t use ASPNETCORE_ENVIRONMENT during update-database

I use visual studio to update all my environments with a certain migration. It had worked fine using the command below. update-database -Migration initMigrationProduct -c ProductContext -Environment Production In ef core 2.0 this command have been changed and parameter -Environment have …

Read More
Package X is not compatible with netstandard2.0

I created a .NET Standard v2.0 project in Visual Studio 2017 v15.3.1 and I'm unable to install "Microsoft.EntityFrameworkCore 2.0.0" package in it (by Nuget 4.3). Previously the .NET SDK and Runtime, both 2.0.0, were installed. The errors I get follow this pattern: "Package …

Read More
How to unapply a migration in ASP.NET Core with EF Core

When I run PM> Remove-Migration -context BloggingContext in VS2015 with an ASP.NET Core project using EF Core I get the following error: System.InvalidOperationException: The migration '20160703192724_MyFirstMigration' has already been applied to the database. Unapply it and …

Read More