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entity-frameworkentityentity-framework-migrations
Michel Borges
Michel Borges

Reputation: 931

How can I disable migration in Entity Framework 6.0

I'm trying to ignore the "Automatic" migration using Entity Framework 6.0 rc1. My problem is that I don't want this feature right now and every time that my application runs I can see all entity logs trying to create all tables.

Anticipate thanks.

Upvotes: 74

Views: 83097

Answers (7)

xyzWty
xyzWty

Reputation: 133

Try this, Add this line in your MyContext class, this will be called before your MyContext constructor is called. This will stop creating the database as well as won't add tables into a connected database. Basically this line disables the default Code-First Database Initialization strategy which basically has a default strategy as CreateDatabaseIfNotExists.

static MyContext()
{
       System.Data.Entity.Database.SetInitializer<MyContext>(null);
}

Upvotes: 1

javovo
javovo

Reputation: 317

If you found this question hoping for a simple answer to disable migrations because you typed "Enable-Migrations" and now things aren't working the way you expected, like not running the seed method you thought it would run, then look in the solution explorer and delete the Migrations folder. That will stop the code from looking at the migrations config to find initialization code. To get the Migrations folder back, just run "Enable-Migrations" again.

Upvotes: 4

Aaron Sherman
Aaron Sherman

Reputation: 3877

Via web.config see - https://msdn.microsoft.com/en-us/data/jj556606.aspx#Initializers

Via Code (oddly, MUCH simpler answer)

public class MyDB : DbContext
{
    public MyDB()
    {
        Database.SetInitializer<MyDB>(null);
    }
}

or in Global.asax.cs

public class MvcApplication : System.Web.HttpApplication
{
    protected void Application_Start()
    {
        // ...

        Database.SetInitializer<MyDB>(null);

        /// ...

    }
}

Upvotes: 30

Carlos Teixeira
Carlos Teixeira

Reputation: 744

You can put this inside your entityFramework section of the app.config:

<contexts>
  <context type="YourNamespace.YourDbContext, YourAssemblyName" disableDatabaseInitialization="true"/>
</contexts>

This msdn page tells all about the Entity Framework Configuration Section.

Upvotes: 53

Martin
Martin

Reputation: 5623

Disabling the automatic migration can also be configured during the invoke of the enable-migrations command (which creates the Configuration class), using the EnableAutomaticMigration parameter with a value of false:

enable-migrations -EnableAutomaticMigration:$false -ContextTypeName FullyQualifiedContextName

The will create a Configuration class which sets the AutomaticMigrationsEnabled property to false, like in the answer above.


The EnableAutomaticMigration parameter of the enable-migrations command is mentioned in this article of the Entity Framework Tutorial page (however they use it with true which seems to be the default value).

Upvotes: 1

user663470
user663470

Reputation: 149

The mistake I was making was to call Database.SetInitializer(null); too late (after the context had been initialised). The best way to ensure migrations are disabled is to make the above call for all your contexts in your application startup. I favor this approach over setting it in the app.config so I can use my container to locate my contexts and then construct a call.

var migrationsMethod = typeof(System.Data.Entity.Database).GetMethod("SetInitializer");
foreach (var contextType in allContextTypes)
{
    migrationsMethod.MakeGenericMethod(contextType).Invoke(null, new object[] { null });                            
}

Upvotes: 3

SeyedPooya Soofbaf
SeyedPooya Soofbaf

Reputation: 2649

Try this:

internal sealed class Configuration : DbMigrationsConfiguration<YourContext>
{
    public Configuration()
    {
        AutomaticMigrationsEnabled = false;
    }
}

UPDATE:

You can also try this:

Database.SetInitializer<YourContextType>(new CreateDatabaseIfNotExists());

Upvotes: 50

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